Slate Cure
/ Clean
| Problems: |
streaks, white marks,
stains, discoloration, turned grey, dull, want wet look, non uniform
color, wax removal, scratches, flaking |
Most people personify
an inanimate object only when it fails to do something they expect
or it does something they don't expect.
My opinion about any stone material is that it is all good. How people
use it is what can be construed as bad.
Some slates are too soft and absorptive for a wet area. Natural cleft
material will never be flat. Honed slate will scratch. If people understand
what they are buying and understand where they are putting it then
slate is not usually a problem. Steven |
Q 5448: My problem is two fold. First,
the previous owner installed the slate floor in the bathroom with the toilet
in place and where there was a gap (any where from a 1/2" to 1")
he filled in with colored chalk. I want to repair this. If I do not or cannot
remove all the chalk, will this effect my grout joints? Second, where the
slate met the walls there is paint on the slate. Can I use ZIP STRIP (for
paint and clear finishes) to remove this, without damage to the slate? Thanks
for your time. Frank, July 23, Reply
Q 5445: Have
installed brazilian cinza slate tiles in the kitchen (cleft finish) and
same material in honed slab for the countertop. The kitchen is very small
(140 sq feet) and the countertop is approx 7 feet with cutouts for sink
and cooktop. Neither has been sealed and both have developed some stains.
the countertop stains are food based and the floor are grease, garden soil,
paint. I think I should seal both. How do I first clean the surfaces, and
then what sealer would you recommend for each surface. I have an electric
power washer and also a floor machine. thank you-- Naresh, July
23, Reply
Q 5444: We have a concrete base on a second
level outdoor patio. Two years later, the slate is buckling up. Thin set
was used to attach the slate to the concrete and grouting between the slate
tiles. When you tap on the tiles, there seems to be a hollow sound underneath?
Does this mean that it is loose? I’ve been told it does not. A outdoor
waterproof sealer was used on the tile when the patio was built. How can
I fix these tiles that have become loose and how can I prevent it from happening
again? Many thanks. Howard, July
23, Reply
R1:
First
question is where did the slate come from? Was the bottom gauged? How thick
was the material? And what is the drainage system like? Debra
Q 5443: I have a black slate counter top that
came out of a doctors office and it looks like it has never been sealed,
I want to put it outside on my deck and was wondering what would be the
best sealer to use to keep it from getting stained and to bring out some
shine?. Thanx, Frank, July 23, Reply
Q 5429: I am a builder and used slate on some
decks on two houses which are above living areas. I used GlazeNSeal Multipurpose
Sealer (2 coats) but I am experiencing a lot of efflorescence pushing out
at the edges of the decks and getting onto the shingle siding. The decks
were constructed with a pitch to the gutters and most of the effloresence
goes into the gutters but I did not curb the edges (mistake!) and during
heavy rains there is water and calcium salts pushed out the sides. I am
looking for the best sealer to minimize the amount of water that pentrates
the slate and grout lines. I know I can't stop it but if I can decrease
the water volume it will hopefully run down into the gutters and not out
the sides. Any recommendations on products??? I would appreciate your opinion.
Thanks! Dan, July 23, Reply
R1: Miracle
Sealer has a good sealer called Mira matt which should solve your problem
Willard
Q 5422: Hi, I have a problem with my bathroom
floor.......it is slate. I actually have slate in the kitchen and hall as
well although it is fine. In the bathroom it appears that water has got
underneath the sealer (I'm guessing). It is virtually white (my slate is
very dark). It looks okay when you first mop it but when it dries the white
patches come back. It is very frustrating. Can you sand slate? If you can,
would the white patches just reappear with time or do you think that the
sealing wasn't done properly. Looking forward to you advice. Sharyn, July
23, Reply
R1: Strip the sealer with acidtone from home
depot (nail polish remover) or solvent and re-seal with good acrylic sealer
or acrylic floor finish 3 coats Willard
| Q 5420: How
many types of bonding are there for marble? How many types of bonding
are there for slate? July 22, Reply |
| R1:
For marble there are two popular bonding agents, which are epoxy and
two-part acrylic glue. The former (more expensive) is more apt for
outdoor installations. The latter can be successfully used in indoor
installations. About slate I don't know anything and I don't want
to know anything! :) Ciao and good luck, Maurizio, Expert Panelist
|
| R2:
What
do you mean by bonding? It is a counter top, floor or landscaping
application? Honed or natural cleft? Debra |
Q 5419: I
bOUGHT SOME TAbLE TOPS FROM A SCHOOL LAb TO USE ON MY COUNTER TOPS CAN I
REFINISH THIS AND SEAL IT. ALSO HOW DO YOU CUT SLATE WITH OUT bREAKING IT
ANY INFORMATION WOULD GREATIL bE APPERCIATED. THANKS U T. July 22,
Reply
R1:
Slate is cut with diamond blades and water. Debra
Q 5417:
I too am trying to get some scratches from slate - no more than a fraction
of a mm deep. I've tried sandpaper, glasspaper, aluminium oxide sanding
disk, slow speed, high speed, with and without water but all I remove is
a microscopic amount of slate dust - I could be there for days ! Any ideas
where I am going wrong - are some types of slate much harder than others
(these are just common or garden wall tiles from the DIY store - no idea
of their original source. Thanks Stephen, July
22, Reply
R1:
Likely the softness is your problem. Usually, if a scratch occurs on a slate
tile,, if it is natural cleft, you simply oil the scratch and it falls in
line with the rest of the natural cleft. If the surface has been honed.
Further minor honing and sealing should do it. Slate, like any other material
can either be of low quality or high quality…Origin usually is a good
indicator. Does the slate have pyrite? These corrode and allow pits to form,
etc. Many slates from Asian countries are very soft and need to be sealed
every three months or so… Debra C. Donovan
Q 5416: My
husband and i are planning on installing black slate tile in our foyer.
This is a first for us, we have installed ceramic but never slate. Other
than sealing it is the installation different? Also, we are planning on
cutting the 4 corners off, and placing a 2x2 inch green slate sqare between
each black tile. How difficult is it to cut the tile, do I use the same
wet saw I would use if I were installing ceramic. Thanks for any advice
you can provide. Rachel, July
22, Reply
R1:
Install like ceramic. Just remember to seal once before applying grout.
This will ensure that the grout washes off the slate if it accidentally
gets onto the slate. Debra C. Donovan
Q 5415: My
Mom has two slate covered back stoops. Some of the slate pieces are starting
to come off. I would like to try and repair it for her. Any suggestions?
Thank you in advance for your help. Diane, July
22, Reply
Q 5414: We
are building a home and want to use slate for our large fireplace surround,
entry, porch, and basement stair landing. Can I buy slate from Home Depot
that will be good for these applications and what can I expect to pay for
black (gray) slate? Do some of the stores have better prices than others?
I can go to Dallas to buy. Thank You!!! Donna Lewis, July
22, Reply
R1: If
you purchase Vermont or Canadian or UK slate, you will be in good geology.
Debra
Q 5413: I
live in Vancouver, and would like to install a 16x16 black slate tiles for
my kitchen floor, mostly because I want black, I like the look of natural
stone, and apparently slate is a not as slippery as when wet as ceramic
tiles can be (which makes sense in a kitchen)
I have read many questions on the findstone site, and it has just confused
me even more, so many conflicting answers.
Are there differences between slates (aside from colour) if I am looking
for black slate, is black slate, black slate? Or are there some that are
better than others? Do I just tell my flooring contractor that I want black
slate, and let him go get it?
I do prefer a little more shine than slate offers, and one tile store showed
me how a few coats of sealer can make the slate less dull, yet I have read
many q&a on this site that leads me to think this is not necessarily
so.Thank you Marie, July
22, Reply
Q 5411: My
neighbor removed all the slate from her yard. They are irregular pieces.
Most at least one inch thick. Can I install this as a kitchen floor? Thanks!
Annemarie, July
22, Reply
R1:
We offer gauged irregular slate flooring. Coming from outdoors, need to
know where it came from. You will have weight issues and installation will
be more challenging where the slate is not all the same thickness and the
bottom will not be perfectly flat. Debra
Q 5410:
I am contemplating changing my exposed aggregate patio by overlaying it
with slate flagstones. I prefer not to use cement as some people do. Can
I use the sand method? The patio is quite low versus the house so I've plenty
of room to put more layers on it w/o it becoming too high. If I use the
sand method, do I also use grout? [This email was prepared using voice recognition
software rather than keyboarding; please disregard any formatting glitches
or the like. Sara, July
22, Reply
Q 5408: I
recently had an outdoor slate floor (black with a blue-ish tint) installed.
It's about 300 sq ft. The tiles are 2 foot square and 1 inch thick and are
set at 3/4 inch spacing finished with a dark colored outdoor grout. Shortly
after the installers left and after a few rainfalls, I noticed that a white-ish
film was developing in a pattern matching the rain runoff. It looks a bit
like efflorescence, but might be coming from the grout?
In addition, I'd like the color of the floor to be a richer, deeper color.
Maybe not so flat.
I've read about color enhancers, but don't know if I also need a sealer
and if so, is it applied before or after the enhancer. Finally, with the
enhancer do the job of sealing the grout or does that need something completely
separate.Anyway, I'd appreciate your help in this dilemma.If pictures would
help, I'd be happy to send them.Regards, Rick July
22, Reply
R1:
The grout is likely causing the problem. The grout would need to be
sealed. If you used a slate oil/sealer, it could do both jobs for you. but
you need to ensure that the surface is truly dry. Is there good drainage
from your base?. Concrete absorbs water and the moisture is coming from
the bottom. Debra C.
Q 5407: I
just purchased a house and the black slate floor is starting to turn white
and the surface is flaking. It turns out that in 1997 the floor was stripped
and then a "wet look" lacquer was applied. Since then it has had
coats of sealer to help it shine. I want to remove all coatings and start
over from the bare stone/slate.What should I use to remove these finishes
and how should I proceed in sealing it to get the dark black and low gloss
look, July
22, Reply
R1:
Paint
stripper would likely work. but could do damage to the grout. The slate
can withstand any chemical (if it is a quality slate) The grout is your
weak link. Debra C. Donovan
Q 5406: I
am putting a raised stacked stone hearth at my fireplace and need suggestions
for a hearth cap. I want a surface that I can sit on and maybe set a drink
on (not too uneven). I love slate and have slate designs in my kitchen backsplash
which is adjacent to my fireplace room.Would slate be appropriate? If not,
any suggestions? Pam, July
22, Reply
Q 5403: Laid
1200 square feet of slate outside on porch and patio. Though the installation
looks fine, the finished used on it (Aqua Mix Stone Enhancer) seems to have
created a dull, grayish look that makes all the color in the slate disappear,
particularly in the sunlight. A few tile installers have looked at it and
said it's not supposed to look like this. I hate the "shiny" look
and want it to be natural stone look but with more color and maybe only
a bit of a sheen that picks up light. Any suggestions? Thanks. Ann,
July
22, Reply
| Q 5402: I
am studying an interior design course and currently have to do a paper
on interior use of marble and slates. I am having difficulty getting
technical information and are wondering if you can help me. below
is a list of the information I need. Composition (i.e. calcium carbonate
etc and what type of rock it is i.e. I know marble is metamorphic)
Hardness (rating i.e.. Marble is 3 for soft and an explanation - "can
be easily scratched") Absorption rating and what it absorbs (water
/ oil?) Sealants type used and why Cleaning and maintenance (what
is it cleaned with - how often)binding process (I have no idea what
a binding process is, why, what is used, etc) Fire classification
(I think they want this one so you know if you can use it in a kitchen
or fire hearth - not sure - there must be some sort of rating) Thermal
value Acoustical value I would very much appreciate it if you can
help.Thank you in advance Kind Regards, Robert Ross, July
22, Reply |
| R1:
Dear Robert Ross: And who said that miracles don't exist? Look, an
interior designer to be who wants to now something different than
color!! :)I do believe I can answer most of your questions. Gimme
a holler at: info@findstone.com and get in touch with me. There's
a little fee involved (as you will be told), but I'll be glad to help.
Ciao and good luck,Maurizio, Expert Panelist |
Q 5400: I
have a concrete front porch. There are no cracks, but it is pitted in some
areas. What tile would be appropriate for this space? Would 1/4" slate
tiles work? What prep is needed prior to laying tiles or slate? I live in
the north-east, so temperature change is a major factor. I have gotten conflicting
information from the so called experts in the area. Your advice would be
helpful. Thank you. Tracey, July
22, Reply
R1:
We usually recommend thicker tiles for the exterior. This will help to protect
the adhesive from condensation due to freeze/thaw cycles on sunny days.
(Got this info from an old Italian tile person) Does make sense though.
We have always suggested 1 -1.5 inches thick for exterior applications when
wet laid and we have not had problems. Our stone has been freeze thaw tested,
etc. Technical info on web site as well as installation info. Let me know
if I can be of further service. Debra
| Q 5404: I
am building my first and last home. The overall look that I want is
"rustic elegance." A full walk-out, poured concrete basement
will be the center of attention. I want as low-maintenance as possible,
and would sincerely appreciate your unbiased opinion. I like slate,
stone, porcelain tile and granite. It seems your answers to most questions
indicate that you prefer granite counter tops. How about the covering
for the concrete floor? Granite or marble is too elegant for me here,
so I would appreciate your suggestion for a care-free surface. Tim,
July 22, Reply |
| R1:
Dear Tim: Nothing is more care-free than porcelain tiles. What's also
nice about them that they come in any type of "natural stone"
looks. Ciao and good luck, Maurizio, Expert Panelist |
| R2:
Have you considered a high quality slate.? Geology is very important
when dealing with stone materials. North American slates are ranked
as the best in the world along with those from the UK.
Once
installated, only need to wash with water and vinegar. If you have
infloor heating the slate hold the heat really well. We usually
suggest a thicker slate tile for these floors. (Same price whether
tile is ½” or anything up to 1.5” thick. And we
custom cut the tiles to any size) Not affected by salt or sand or
chemicals. Let me know if I can be of further service.Debra
|
| R3:
You
need the real thing - which is slate flooring - the perfect rustic
low maintenance flooring Willard |
Q 5398: I
am looking at a roof in Enid, Oklahoma that is claimed to be damaged from
the build-up of about 3 inches of ice over it full area. Ice remained for
about 2 weeks before completely melting. Its a 12:12 slope. Reported to
be 100 year old slate from Illinois, installed about 5 to 10 years years
ago. Do you have any articles that dicuss the type of damage expected from
such an occurance, and any comments would be appreciated.Thanks, Jerry,
July
22, Reply
Q 5397: what
kind of sealant should I use for a slate floor? what kind of thinset? grout?
Kathy, July
22, Reply
Q 5396: I
am currently installing a new bathroom with slate floor and shower. How
should I initially treat the slate, and how should I best maintain it? James,
July
22, Reply
Q 5394: I
ran across your website regarding questions from readers. I am considering
of installing slate in my entry and into the family room. What is your opinion
on slate for such rooms. Also, advice on the specific type of slate on should
install for such high traffic area. Also, is there any special care, of
applying a shield or etc, that I need to be concern with? Any information
you provide will be most appreciative. Thanks, Mike, July
22, Reply
Q 5393: Could
you possibly tell me what to use on slate tile floors?I need something to
clean them .Thank you, Linda, July
22, Reply
Q 5391: Hey
There! We own a 70's house with a raised black slate hearth. We've actually
painted the white grout black...hope this is ok {it looks 100x's better}.The
slate now just needs to be perked up with a little polish or sealant. What
are your suggestions? signed, barb, July
22, Reply
Q 5389: I
broke a slate back to a sink, how can i repair it and hold it back together.
it was a clean brake from the top to the bottom.thanks nathan, July
22, Reply
Q 5388: I
need to know what I should do to get crayola crayon markings off of the
slate on my fireplace base. I've scrubbed with soap and water on a scrubber
sponge but it didn't work. I'm afraid to use a harsh chemical. Please help!
Thanks Andrea, July
22, Reply
Q 5387: I
have a problem with my bathroom floor.......it is slate. I actually have
slate in the kitchen and hall as well although it is fine. In the bathroom
it appears that water has got underneath the sealer (I'm guessing). It is
virtually white (my slate is very dark). It looks okay when you first mop
it but when it dries the white patches come back. It is very frustrating.
Can you sand slate? If you can, would the white patches just reappear with
time or do you think that the sealing wasn't done properly. Looking forward
to you advice. Sharyn, July
22, Reply
Q 5385: I
have multi-colored slate tiles to install in a new powder room. I want to
select the ones with the most colors on them. How do I tell what they will
look like when sealed? If I put water on them will that give me a resonable
facsimile of what it will look like sealed? Thanks H. July
22, Reply
R1:
Yes Debra
Q 5384: I
have found a fire place in my mother’s house which was built in the
early 1920’s. I have enclosed some photos as I am wondering if you
can identify what type of stone it is. It looks like marble however it could
be some sort of granite or slate or something else. I would like to restore
the fire place but without knowing what it is I cannot do anything. Can
you please please help me? Kind Regards Silvana, July
22, Reply
| Q 5383: I
have been contacted to be an import agent of slate and other stone
from India in to the U.S. I need information on everything about being
an Import /Export agent. I would appreciate it if you would email
me the information.Thank you, Nina, July
22, Reply |
| R1:
Dear Nina: If you want to sell slate, you will need to get three things
and three things only: 1. A manual on marketing. 2. A magic sentence.
3. A good pair of earplugs. Let me explain what I mean and how you
will be using the three means I listed for you.The first one is pretty
much self-explanatory: you've got to learn how to sell the stuff,
and the more you will sell of it the more money you will be making!
Of course you won't have much time left to learn about what the heck
you're selling, but it really doesn't matter. In fact, you do NOT
want to know! The second, which is the magic sentence that you MUST
learn by heart is: "All you have to do is seal it!" (Whatever
that means! but then again it's not necessary to understand that,
either.) In fact, here comes the last and most important "accessory"
to the whole business: the earplugs. When somebody will come back
complaining about the beautiful stuff you sold to them, and also report
that the sealer turned out to be only the trading of a problem for
another one, by wearing your all too precious earplugs, you will get
away from any possible trouble totally unscathed! It does work! Look
at this very site: How many complains come in about slate every single
day! I had to stop answering them because in most instances they were
without a solution, and the slate merchants who are involved in this
site complained very loudly about my "attitude", which was
hurting their business. Fine, I said, let them solve their own problems!
Did you ever see that happening? Not a chance! The earplugs are on
all the time! :) Ciao and good luck,Maurizio, Expert Panelist |
| R2:
If you want to sell slate, sell the geology of it. Slates coming
from certain geologies are very soft and need to be sealed just about
every month. Quality geology, as found in Canada, Vermont and UK are
a lot less work. If installed properly, they are worry free. Problem
is that low quality product is being dumped into our high end North
American markets and the consumer needs to be educated about the different
geologies and how that affects the performance of different slates.
Most of the problems from slate consumers is that they likely purchased
a very soft, low price imported slate. Debra |
Q 5366: I've
been seeing a lot of front stoop makeovers on television. Mostly, they cover
the concrete with pretty slate. I would love to do this, but we're in Minnesota,
and don't know if that is the best stone to use in this climate. I would
certainly appreciate your advice! July
14, Reply
| Q 5360: I
am considering several stones for my kitchen countertops: brazilian
green slate; a jura green German limestone; a black (with white veins)
Italian limestone; and a grey Irish limestone. I know granite is probably
the best choice for kitchen countertops, but I do not like granite.
Can you comment on the pros and cons of the brazilian slate, vs. the
limestones. I was also considering a Vermont slate, but it is significantly
more expensive than the brazilain slate. Is it worth the price difference?
Thanks in advance for your advice. Liz, July
14, Reply |
| R1:
Dear Liz: In my opinion, none of the materials
you listed is suitable for a busy kitchen countertop. Ciao and good
luck, Maurizio, Expert Panelist |
| R2:
We install 5 kitchen counter tops per week with brazilian Slate mostly
honed or natural black which is more a dark grey but some green as
well - it is very succesful and we cannot keep enough slab material
in stock at the moment. We do both slate and lime stone in flooring
and counter tops, Wilard |
Q 5347: I
have slate flooring on my floors in the foyer, hall, 1/2 bath and wet bar
room. I have no idea what kind it is, but the base color is dark grey with
some green in it. It's dull, and lifeless. Is there any sealer that will
make it shine like glass? Would any of the interior concrete sealers that
are buff-ed to a high gloss work? Not only is this same slate on the floors
that run throughout this house but the remodel contractor that I was told
did the work 10 years ago put it on the wet bar counter top and back splash.
When its wet it's it looks great, but dries dull. Help me. All the natural
stone stores I've been to here in Cleveland Ohio have told be there is nothing
that can be done to make it shine. The cost of replacing it is more than
my husband is willing to spend. Thanks in advance - Roxanne, July
02, Reply
R1:
A good acrylic floor finish will do the job - which can be purchased from
any good janitorial place , Willard
| Q 5341: We are building
a "hearth" out of natural slate to place our free standing
propane stove on. How do I bring out and maintain the natural wet
look? Does the grout have to cure for any period of time before we
can seal it? Darline, July
02, Reply
|
| R1:
Dear Darline: Consider the application of a good-quality stone color
enhancer. Ciao and good luck, Maurizio, Expert Panelist |
| Q 5335:
I am putting in a granite or slate kitchen
counter top and granite bathroom tops in my new condo. Your site was
very informative. I am also beginning to work with local contractors
in their business to assist with material acquisition. Alice, July
02, Reply |
| R1:
Dear Alice: And the question is … Ciao and good luck, Maurizio. |
Q 5331: I
have an area that will not grow grass well. It is an area shaped like a
lope-sided tear drop. I have been thinking of putting down some stone. Slate
has come to mind. However I am not interested in putting any mortar between
the stones (whatever kind) I use. My question then is how to do this so
that the stone will remain still and shift at a very minimum. With other
stones there are instructions on how to handle the ground (till, put in
sand, etc., etc.). Do I have an option here with slate? Please advise,
July
02, Reply
| Q 5330: We
have a black slate fireplace mantel that looks more gray than black.
Can we use a sealer to darken the color? If so, what sealer do you
recommend? Thanks! Cherie, July
02, Reply |
| R1:
Dear Cherie: A good quality stone-color enhancer should do the trick
for you. Ciao and good luck, Maurizio, Expert Panelist |
Q 5328: I
am planning to have a slate patio installed. Our water is extremely hard
with lots of calcium + other minerals. The water will surely leave unsightly
deposits and staines within a few weeks. Is there a sealer that can prevent
this? I read about Cabot offering a waterproofing sealer with Teflon. Does
this make any sense? Richard, July
02, Reply
Q 5325: I
am attempting to lay 12x12 black slate tile floor in my kitchen and am finding
inconsistencies in advice from many experts...i am hoping you may assist
me....
1. i currently have linoleum that is well adhered and had planned on laying
1/4 inch concrete board without removing the lino...is this ok?
2. i am certain that i want a satin finish, but there seems to be a discrepancy
at what point to seal the slate...should i seal each piece individually
before installation, seal after installation but before grouting, or after
grouting???
3. what type of sealer would you recommend for a high traffic and possible
spillage area??? shane, July
02, Reply
Q 5324: I
recently installed 4x4 slate on a Hardibacker wall (with one inch air gap)
behind a pot belly wood stove. My question is about gloss sealers. Is there
a special product which can take the intense heat in a stove area? Is lacquer
base better than water base? Tomy, July
02, Reply
| Q 5314:
I just had my bathroom remodeled with
a natural "rainforest" slate (greenish with tan and brown
fossil patterns, probably from India) on the floor, countertop and
tub surround and backsplash. I want it to look the way it looks when
I sponge water on it, but not shiny. I've been told to use "color
enhancer" but need to know which product is best. Should it be
"surface" or "penetrating", acrylic or urothane,
does it need to be a sealer as well, and is there a difference between
the high-priced brands and those that are more affordable? Deanna,
July
01, Reply
|
| R1:
Dear Deanna: A color enhancer is a below surface (penetrating, that
is) product; therefore it will darken the stone without altering the
original surface finish. You can get my maintenance guidelines for
residential stone installations by giving me a holler at: info@findstone.com.
They do carry a small price tag, but are worth every single penny
and then some! It’s a one-of-a-kind document that you won’t
find anywhere else, I promise! What’s more, I will also tell
you a way to get your money back!Ciao and good luck, Maurizio, Expert
Panelist |
| Q 5309: My
home is 60 plus years old. The fireplace hearth is made out of slate
(I think). I have tried many different ways (wax, marble polish, etc.)
to bring out some luster but I am getting no way. I don't want it
shiny, I just don't want it as dull as it is. Any ideas. Thanks, Kimberly,
July
01, Reply |
| R1:
Dear Kimberly: Sure, I’ve got plenty of ideas! but the slate
people don’t like them very much for some reason. See my answer
to the post 5308 below. Ciao and good luck, Maurizio |
| Q 5307: I
picked up a sample of 12 X 12 slate at Lowe's and I am considering
it for a kitchen, laundry room and bathrooms. What are the advantages
and disadvantages of slate? Is slate hard on the feet? I have difficulty
telling which side is up/down. Also it appears that there are layers
of slates in this material when viewed from the edges. Any advice
you can give would be helpful. I plan to install myself after much
study. I have installed tile but never slate. Sincerely, Fred ,
July
01, Reply
|
| R1: Dear
Fred: Let me start from the pros of slate flooring in a kitchen, laundry
room and bathroom … hmmm … I must have a temporary loss
of memory, because I can’t remember any. Ok, let’s get
to the cons; I remember those! … Oh, I’m sorry, I can’t
say them: the slate people would get upset, and we don’t want
that to happen, do we?! :-) Ciao and good luck, Maurizio, Expert Panelist |
Q 5303: I
have a vermont slate foyer and the grout between the slates I would like
to remove. I have already tried removing some of it with carbide bits attached
to dremel tools and hand grout removal tools, and the process is very slow
and tedious. The grout has a consistency like mortar, is that normal?If
you know of a better and faster method to remove this grout I would appreciate
knowing Also, how deep do I have to remove the grout to get a good bond
with new grout? Thanks, Dennis, July
01, Reply
Q 5302: We are looking
to install slate flooring . What bare the best tips for this procedure?
The surface to be tiled is smooth concrete, with no cracks. What is
the best
adhesive to use? Should we seal the tiles before doing the grouting
na dthen again
afterwards? Jonathan, July
01, Reply
|
| R1:
Dear Jonathan: You don’t want to know what I think about slate
floors; therefore I won’t make any comment. About your questions,
I reckon that them slate people who don’t like me too much should
try to find some time out of their busy selling schedules to answer
them. It never happened before, but, like the saying goes, there’s
always a first time for everything! Ciao and good luck, Maurizio,
Expert Panelist |
Q 5296: I
would like to seal floor of bathroom and shower, made of black slate. I
would like a semigloss appearance, Sandra, July
01, Reply
Q 5295: Split
some red candle wax on my unsealed slate fireplace hearth. Having read through
your comments to others, am I correct to conclude nailpolish remover or
acetone may get the wax and stain out of the light grey slate. A poor attempt
with scraping, then scouring it out only seemed to make the wax go deeper
into the slate....haste makes waste. What should I do? betsy, July
01, Reply
Q 5294: Can
you use Mastic to adhere slate to wall? I'm planning to cut slate into 4
X 12 rectangles and mounting on wall to use as "baseboard". Thanks,
Mark, July 01,
Reply
Q 5293: How do I clean crayon scribbling off
of a slate fireplace ? Anthony, July
01, Reply
Q 5290: Hello,
I have access to beautiful slightly used slate roof tiles. They are in various
shades of gray. I was thinking about using them as my counter top material
or possibly as floor tiles. Is this being done? What are some of the things
I will need to be concerned about. We are a organic household and enjoy
the possibility of using this renewable source. Thank you for any thoughtful
feed back, Candus, July
01, Reply
Q 5287: I
have a 90+yr old house with a black slate sink. The sink is structurally
sound but somewhat greying... I have noticed some people have some very
black slate sinks. Is there a simple way to clean up or polish the sink,
Dan, July 01,
Reply
Q 5135: My
husband and I are building a home and I have been trying to decide
on a material for the kitchen countertop. At this point, I think I
want to go with slate tile but I'm finding a wildly varying price
range. There is one place online that sells "brazilian"
slate in varying sizes for about $2.50 per sq ft.
1. Is all brazilian tile the same hardness and porosity?
2. If it is an inferior tile, can the porosity problem be fixed with
a good sealant?
3. What is considered a minimum thickness for a kitchen tile?
Sorry for all the questions, but this is a big step for us and I want
to be sure. A big slab of stone is way out of our budget, but I am
also leery of a price that seems to good to be true. Sincerely, Judy,
June 3, Reply |
| R1:
Judy: Let me explain you something: I'm a maintenance
man, and I HAD to write postings against slate (especially in a kitchen!)
on the account of all the complaints and gripes that end-users have
with such a material. However, the slate merchants who use this wonderful
site for their trade complained quite loudly with its management because
my comments were hurting their business. I believe that what was hurting
their business were the complaints themselves, not my comments, but
I decided not to follow up any longer slate posts. At the same time
I encouraged those merchants to take care of their own customers.
I think it's only fair. The complaints kept coming in like clockwork,
but never received one single follow up. They were too busy selling
it, I reckon. I promised then that I wouldn't make any comments about
slate anymore and I'm going to keep that promise, but I sincerely
hope - also considering that you don't sound extremely wealthy - that
you can draw your own conclusions. Ciao and good luck, Maurizio, Expert
Panelist |
| Q 5154: Planning to
use slate on the floor of my cabana, should I seal it and if so will
it be slippery? Margie, June 3, Reply
|
| R1:
Hi Margie, Depends on the sealer-seal on tile and try it on site.
If there is going to be a high level of moisture or water I would
seal it with an impregnator rather than topical sealer. Topical sealers
can give you a real headache in the future "Stone" |
| |
| Q 5162: I just purchased
40 - 12"x12" inch sheets of 2"x2" slate to use
for a kitchen backsplash. The Chinese slate is all covered with mud
which hides the true color. I have spent over 1 hour trying to clean
1 sheet and am making little progress. I have used a wet sponge and
scrub brush which is removing it slowly. I plan to use and enhancer
and selant before installing. Any suggestions on removing the mud
? Thanks, Stern, June 11, Reply |
| R1:
Dear Stern:You do NOT want to know what I think about your
problem. I sure hope that the slate merchants will chime in! (Don't
hold your breath, though…)Ciao and good luck, Maurizio, Expert
Panelist |
| |
| Q 5186: I recently purchased
and installed a multi-classic slate. I sealed the slate with a penetrating
sealer prior to grouting the floor. I am unable to restore the original
appearance of the tile prior to grouting. I have tried a stone cleaner
and also applied another coat of the penetrating sealer and am unable
to remove the haze from the tile. I read a few previous questions/answers
and I would like to verify with you what I have read: 1. a 50/50 soluton
of muratic acid and water will remove the haze and NOT harm the tile?
2. a surface sealer will give the tile a "wet look" without
a glossy look - you mentioned a product called Miton 42 that would
work best - how/where can I purchase this product? Regards, Shawn,
June 16, Reply
|
| R1:
Dear Shawn: Where are the slate people when you
need them? Sorry, they are too busy selling the stuff! Ciao and good
luck, Maurizio, Expert Panelist |
| |
| Q 5193: We
just put a natural black slate on our kitchen floor and i feel as
though it is not clean i like the natural look but for my sanity i
think we'll have to put something on it lots of kids and pets running
around what should i do? thank you kim, June 16, Reply |
| R1:
Probably a good top finish will help a lot. Try one tile and use it
for a week, see how it performs. Stone |
| |
| Q 5201: Just installed
a new slate floor outdoors around our home pool and deck in South
Florida--about half will be under roof. It is Indian slate. The colors
run from blue-black to yellow mud. Some is very flaky. We like the
way all that looks and picked the slate partly because it seems to
be relatively non-slip. From reading the questions about slate, I
wonder if there is a problem with it bleaching in the sun or deteriorating
in other ways. Should we seal it? With what? We are satisfied with
a natural dull look, but some sheen would be OK if it did not make
it slippery. I have talked to one company that is recommending a two-part
finish that they make. They say they will add non-slip and it will
last 10 years. Two coats will cost about half the price of the slate,
which seems high. but my big concern is that it will look like linoleum.
If I wanted that, I would not have laid slate. Any suggestions will
be welcome. John, June 16, Reply |
| R1:
Dear John: Just sit tight and some slate people will chime in with
all the answers! … I hope … You see the reason why you always
read questions about slate is because the slate people, so far, never
bother answering them. but … you don't want to give up your hopes!
:-) Ciao and good luck, Maurizio, Expert Panelist |
| |
| Q 5216: I
have just had slate floors installed in a bathroom and sunroom in
my house. The advice on sealing and how to seal is very spotty and
conflicting. My contractor told me to wait several days to let the
stone cure and then to sponge on a thin coat of sealer. The product
instructions say I should let the floor cure for thirty days, wash
it with acid wash and then apply sealer with a lambswool applicator.
All of the websites I have read say that I should not use any kind
of acid on stone floors. I am totally confused and I wanted to get
it done today before company arrives tomorrow for the holiday weekend.
This brings me to my last question. How long does the sealer need
to dry? My contractor said for about 8 hours. No one else gives specific
information. Just instructions to wait until the sealer is dry. -Dayna,
June 17, Reply
|
| R1:
Dear Dayna: Just sit tight and some slate people will chime in with
all the answers! … I hope … You see, the reason why you
have all these conflicting opinions is because the slate people are
too busy selling the stuff to bother assisting their own customers.
but … you don't want to give up your hopes! :-) Ciao and good
luck, Maurizio, Expert Panelist |
| |
| Q 5241: I just bought
some african multicolor autumn slate to use for my kitchen counters
but I was trying to clean it before installing it and all the orange
and red color keeps coming off-it seems no matter how many times I
brush it (I am using a firm brush with water and laundry detergent)
I continue getting a residue and the bright colors are becoming very
dull and dark-is this normal or did i get a bad batch of slate-please
help! thank you Pat, June 20, Reply |
| R1:
Yes it is normal. Ciao Stone |
| R2:
You need to apply a sealer to stop the color
from coming off - the color will be enhanced and your tile protected
with a gfood acrylic sealer.Willard |
| Q 5256: I'm
building a patio deck on the back end of my house In Portland or of
course it rains alot here. I'd like to accent the steps with and outdoor
tile like Slate or Granite. How do I prepare the step surface I've
done alot of ceramic tile and marble flooring inside but this is the
first time for outside. Can I use a plywood base if si do I need the
hard backer board and do I use a sanded grout to fill the spacing
or is there something else I can use. Thanks, Don, June
20, Reply |
| R1:
Hi Don, I prefer using cement boards followed with a membrane
over it. Im not familiar here with the term hard backer board. I would
also use epoxy joints to complete work. Follow the directions from
your local glue supplier, thats the best way to have a good guarantee.
Stone |
| Q 5260: I
have multi-colored slate tiles to install in a new powder room. I
want to select the ones with the most colors on them. How do I tell
what they will look like when sealed? If I put water on them will
that give me a resonable facsimile of what it will look like sealed?
Thanks H, June 23, Reply |
| R1:
Hi H, yes it will bUT, you should be presealing
them, it makes it much easier to clean and you can actually see the
colors before you lay them down. Choose an area larger than the actual
floor to be done (ex. garage) lay them down in the same configuration
as the washroom and apply a coat of appropriate sealer. As they are
wet you will see all the colors vividly. All you have to do is move
them around like a puzzle in the layout of choice. Turn them and mark
them 1,2,3 , etc., (on the underside) That's it. Your installer can
no longer make a mistake and you have the floor looking the way you
like it. Ciao Stone |
| |
| Q 5261: I
was considering a slate countertop. Is this a good material to use
and how does it compare to granite, soapstone or corian in cost? Thank
you. Power, June 23, Reply |
| R1:
Dear Power: It does NOT compare with any of the
materials you listed. And you do NOT want to know what I think about
slate kitchen countertops! (Actually, I'm sure you would, but the
slate people would get pretty upset, and we don't want to do that,
do we?!) Ciao and good luck, Maurizio, Expert Panelist |
| Q 5062: I am in the
process of laying a rough JACK bLACK slate floor in India, and find
that the material has arrived with scratches from the quarry - as
a result of the transport, and abrasion of one tile against the other.
Can these scratches be removed - would a coating on the stone help
remove these scratches... they are not very deep but do mar the visual
quality of the surface. I do not mind a darkening of the slate with
a coating. Could you recommend an appropriate sealant. thanks Anjani
, May 29, Reply |
| R1:
Dear Anjani: I have not the faintest idea! (Or
maybe I do …) At any rate, slate manufacturers do read these
postings all the time. (In fact they got very upset when I was making
not so flattering comments about slate in general!) Unfortunately,
they are so busy selling their stuff that they have no time to help
any of their customers out! but I am sure that in your case they will
make an exception and solve your problem in a jffy! Maurizio, Expert
Panelist |
| Q 5031: We
have a builders grade slate fireplace surround and hearth in black.
it always looks chalky. could you recommend a cleaning method and
solution to seal the slate to bring out a richer color. John, May
02, Reply |
| R1:
Dear John:Yes, you could apply a good-quality stone color enhancer.
If you want to know more, gimme a holler. Maurizio |
| Q 5024: We are planning
to move an older billiard table from one home to another home, a distance
of about 10 miles. We plan to rent a 14-foot U-Haul truck. The slate,
which is 3/4 to an inch thick, is ONE PIECE of approximately 4 feet
wide by 8 feet long (we are not sure but guess that it weighs about
800 pounds). What are the recommended ways to truck this piece of
slate without cracking it or damaging it? We have asked numerous movers
and billiard table personnel this question and have received a lot
of conflicting answers, including 'lay if flat on the truck bed',
'lay it flat on pallets', 'lay it flat on blankets', 'do not lay if
flat', 'use an A-Frame', 'truck it on edge'. etc. So we think we need
a conclusive answer from any expert. Zoppettie, May 02, Reply
|
| R1:
Zoppettie, The A-frame is your best bet for shipping
the stone without damage. I try to ship anything under 3 inches thick
upright. Thin stone should be moved around much the same as a sheet
of glass. Good luck, JVC, Expert Panelist |
| Q 5079: I work in a
wholesale brick & tile company in Nebraska. We sell some tumbled
marble, travertine, slate, granite, and limestone. Can you tell me
the differences between the tumbled marble, travertine and limestone.
Also, honed, filled and polished marble, etc. This is very confusing
to me when trying to explain to a customer. Also, I know it depends
on where it comes from. I am just looking for a general description
of how it is formed from the earth and by man when sold. Thank you
for any help you can offer. Julie, May
29, Reply |
| R1:
See the Library of Articles in this site itself |
| Q 5450: We have a small
black slate floor in the foyer of our home. We have light white scratches
in the floor from the kids playing with their toys. Should I use baby
oil to take away the scratches or should baby oil not be used for
floor? Chris |
| Q 5449: Will a sealant
help prohibit iron from weeping through the surface of green slate?
Jim, |
| Q 4661:I am buying a
new home, actually an old home. Gutting the kitchen. I’ve always
loved carrera marble but know that its awful for kitchen counters
due to stains etc. So I’ve moved off that and am now very fond
of French blue limestone...however you state that limestone is equally
as awful for countertops...so here’s my dilemma. I want real
stone—not Caesarstone or Silestone—and I absolutely disliked
granite. So what are my options? Travertine? Slate? Soapstone? Any
thoughts/advice would be greatly appreciated. Andrea, april 9, Reply |
| R1:
We instal 5 kitchen per week of brazilian slate tops - it is very
good product for kitchens - bathrooms etc.Willard |
| Q 4631: We just bought
and installed a cast iron fireplace with a black slate hearth. It
came with a smooth flat finish, all matt black, but no polish. While
doing the decorating, some patches of stong wallpaper paste got onto
the hearth, and some small spots of danish oil which had been used
to repolish a coffee table.I can't seem to shift these substances,
no matter what i try. I triepntd turps substitute (white spirit?),
then a soft finish remover which is similar to white spirit, then
what I believed to be an acetone liquid sold for removing sticky gluey
things. Nothing moved the paste or spot of oil.I don't know what to
do next. I'd be very grateful for your help and advice. Is it possible
to use harsher things, or to use wire wool or a scouring pad for instance?
I do not want to damage the hearth stone.We have another similar black
slate hearth, and that one came polished. Can you give me any advice
on polishing the unfinished one.Thanks in advance. Tricia, april 9,
Reply |
| Q 4610: We just moved
into a house 2 months ago with a screened in porch. It looks like
it has a slate floor. However, it looks like the "slate",
which is wet, is turning to mud! HELP. What is this and how do we
care for it? Fran, March 29, Reply |
| Q 4600: I am installing
multi color slate floors in my kitchen and family room. Should I seal
with and enhancer or sealer or both? Does this seal the grout also,
or do I have to use a different product? Please advise, March 29,
Reply |
| Q 4524: We are purchasing
a home with a fireplace. The previous owners painted over the slate
type stones surrounding the fireplace with latex paint and possibly
a primer. We want to remove the paint and bring the stone back to
it's original state. Any ideas/suggestions would be greatly appreciated.
Thanks Gayle, March 27, Reply |
| Q 4523: I am about to
renovate the kitchen of my 1915 Victorian. I am trying to keep the
appearance appropriate to the age of the house. Therefore polished
granite is not the look I am striving for. I am interested in a countertop
that provides a dark, dull, solid appearance, without the speckles
typical of granite. I am interested in Pietra Cardoso, soapstone,
slate, black-honed granite and any other product that fits this description.
I would like to know how each of these stones reacts to spills, such
as wines and oils and scratches. I am also interested in the maintenance
requirements of each. I don't mind having to do monthly treatment,
but don't want to have to do anything other than a wipe down each
day. I also don't mind a stone that will take on a worn look with
age but I want to avoid obvious staining. Also, is there a way to
prep a stone when it is installed in order to prevent scratches and
permanent staining? Jocelyn, March 26, Reply |
| R1:
We sell 5 kitchen a week in slate counter tops in both honed surface
and natural cleft - brazilian slate in almost impregnablke to spills
once treated with mineral oil a monthly or bi-weekly treament - should
a serious stain occur it is simply remover with 1200 grid emery paper
- I have it in my house and would have nothing else - both from a
maintenance point of view and mostly from an eye pleasing perspective.Willard
|
| Q 4522: A small piece
of slate (about six inches long, three inches wide) chipped off a
slate porch. Can I glue it back on with epoxy or some other glue?
Thanks. Eric, March 26, Reply |
| Q 4521: I would like
to know more about the charactoristics of natural stones. Specifically
granite, limestone, sandstone, marble, slate and flint. Thank you,
Margaret, March 26, Reply |
| Q 4520: I am a contractor.
I get many calls for natural stones applications and installation
for marble, granite slabs and tiles, tumbled stones and slate. I would
like info on installation tips and techniques. Thank you, Dustin,
March 26, Reply |
| Q 4501: My daughter
wants to put "Jet Mist" honed granite on her countertop
- can you guide me re maintenance and if this is a good choice - She
wanted a slate-look. She has a large family (5 children) and would
appreciate any advice you may give. Thanks. Alicia, Feb
14, Reply |
| Q 4495: I recently bought
tiles labelled "slate" at a building superstore to put on
the floor of a new mudroom. They were inexpensive and rough looking,
which seemed reasonable for an entry that sees hard use. I was not
looking for a high end kind of surface. The sample tiles looked beautiful,
with mottled soft gray and rusty brown surface. They were labelled
made in China. THe installer has cemented them down, and I was surprised
to see that the colouring on most of the pieces were much darker gray
and very deep rust. Jan 9, Reply |
| Q 4491: Does
anyone know how i can use the thick slurry in the quarries at Portland
here in England to fire it ? Apparantly it just needs some chemicals
added, any clues ? Greetings Sharon, Jan 9, Reply |
| Q
4419: I do not
now who this MAURIZIO guy is that is giving all this advice but he
should get alittle more info on stuff he speaks about. All slate is
not the same we quarry vermont slate and all the stuff he speaks about
slate does not include Vermont slate It works great in Kitchens, bathrooms,
and it can br sealed with natural oils corn vere, ect. and when all
these people are ttalking about discoloration on their floors thats
from the wrong type of cleaners being used, the brown discoloration
can be removed, After reading some of his stuff If I was lookingto
purchase slate he sure would turn me off. So why not tell that all
slates are not the same. STEPHEN, Jan5 Reply |
| |
| Q
4109: I have been
having a very difficult time cleaning my slates floors. Everyone tells
me to do a different thing to do. What should I do? I have black slate
in my shower and on the floors. In the past I used Miracle sealer
and Miracle enhancer. My floors and shower have white marks coming
out. It looks very dirty. Please help! Dana, Nov2. Reply |
| R1: Dear
Dana: For your mental well being, rip it out and start all over with
a more proper stone. Maurizio |
| R2: Dana,
Please do not rip it out. It is Perfect. You just have calcium deposits.
LimeAway and elbow grease will take it off. Once you have that done
then re-seal the shower with an acrylic solvent based sealer. This
will protect the surface of the stone. Do this Once a year and you
should have No troubles. best Regards, Stephen, Slate Expert - Canada |
| Q
4121: I have scratched
some slate tile on my floor with a piece of machinery and do not know
how to treat this scratch. It is fairly deep, about 1/8", and
fairly long and wide. I would rather not replace the tile, so do you
have any suggestions about repairing this scratch? I saw your article
about contacting you concerning the correct tools to perform this
operation. I hope you can elaborate, bob, Nov2. Reply
|
| R1:
Dear bob: Nobody can
remove a scratch. It would be like trying to remove a hole out of
doughnut! What you should do is to eat the doughnut and the hole is
gone! Same thing with your slate: you'd have to grind your tile along
the scratch down to the depth of it, and the scratch is gone. The
only unsurmontable problem is that you can't grind natural-cleft finished
stone. This is by far the major draw-back with natural-cleft slate
used as a flooring material: it can't be refinished. Forget it, replace
the tile. Ciao and good luck, Maurizio, Expert Panelist |
| R2:
bob, just wet the surface and stand back and
see if it kind of disappears. If it does just dab a bit of acrylic
sealer on it. If it doesn't work then try to match a grout color to
the slate and fill the trench in with some grout. Then seal the grout.
best Regards, Stephen, Slate Expert, Canada. |
| Q
4200: I'm planning
on installing clefted slate on a bathroom floor. Is it ok to use Aldon's
Grout Easy to prevent grout build up on the slate? Also should I use
a sealer? Water based or solvent? Lyssa, Nov15.
Reply |
| R1:
Lyssa, I do not know anything about Aldons Grout
Easy. The best looking Slate floor that I have seen is a floor that
was installed and grouted then 10 days later we sealed it with an
acrylic solvent based sealer. A clean bucket of water and good sponges
will do the job. Do not waste your money on high priced products.
best Regards, Stephen, Slate Expert, Canada |
| Q
4112: Our home
was built in 1980 and has a slate foyer. Not to our surprise, the
underlayment used was not sufficient and the floor is now quite loose.
What do we need to do to repair the loose tiles and what type of grout
and sealant do you advise we use to protect the flooring? Also, how
long does it take for the repairs take to hold? Liz, Nov2. Reply |
| R1:
Liz, Try to remove the
tiles and not break them. Then try to remove the thinset underneath.
Then just re-install the tiles and grout them and re-seal the surface
with an acrylic solvent based sealer. best Regards, Stephen, Slate
Expert, Canada. |
Q
4125: We built
a new home with slate surrounding the fireplace and on the hearth.
I believe it is an Indian slate ("beach sand" color), which
has not been honed. The color is very light and we want to darken
it quite a bit to bring out the natural colors and depth. I tested
two products by Aqua Mix on some leftover pieces -- "Stone Enhancer"
(water based formula) and "Low Sheen Sealer". They both
barely hardly darkened the slate at all. We want it much richer and
darker, with minimal sheen. What product should we use?
No products have been applied the the slate so far. Thanks. brenda
brenda, Nov5. Reply |
| R1:
Dear brenda: None. Get
a darker slate. Maurizio |
| R2: brenda,
Maurizizo do not know what he is talking about. He is prone to Marble
and not slate. It is like asking a Santa Claus how he delivers his
Easter Eggs. O.K. beach Sand is a color that we sell in North America.
There is a Product that makes it wet looking called Miton 42. Try
to wet it and see if you like the darkness. Look up Miton 42 on the
Internet and you should find us. We sell it. It will do exactly do
what you want. best Regards, Stephen, Slate Expert, Canada |
| Q
4140:
My friend has black slate in her entryway.
She was thinking of covering it with another flooring product. I was
wondering if she can lighten or change the color by using some sort
of acidic liquid. The slate is about 30 years old, and has not been
sealed in probably 30 years, so it is quite pourous. It appears to
be sawn slate, it is very flat, symmetrical squares, Nancy, Nov6.
Reply |
| R1: Dear
Nancy: No, black slate is not porous at all. That's why they use it
as roofing material. Tell your friend to go with her original idea
to have a new floor installed (not slate, I hope!). Maurizio |
| R2: Nancy,
re-install a new slate floor. You will love the feel of the imported
slates. The material that you have is from Quebec. but no you will
not change the color by adding acid or other topical substances. best
Regards, Stephen, Slate Expert, Canada |
| Q
4182: What's your
opinion about slate as a countertop material. Does it need to be sealed?
Are the minor scratches a problem. bottom line: Is it tought enought
for a high traffic kitchen with 3 kids and lots of cooking? Lisa.J,
Nov14.
Reply |
| R1: Dear
Lisa; No, it does not need to be sealed. It needs to be totally forgotten
about, and big time, too!! You do NOT want any slate it in your kitchen!
Maurizio |
| R2: Lisa,
We are installing about 10 Kitchens a day with brazillian slate for
countertops. We seal ours with Mineral oil once or twice a month.
It will handle the kids. Mineral oil takes the scratches and makes
them disappear. Slate is Great. best Regards, Stephen, Slate Expert,
Canada |
| Q
4224: I am at the
grouting stage, and I was told by the slate company that the impregnator
sealant will seal that grout as well as the slate. What I am wondering
is, do I still have to wet mop the grout 2x a day for three days before
I seal the floor or can I seal 24 hours after grouting and leave it
at that. (I already have one layer of impregnator on.) Thanks. Shari,
Nov20.
Reply |
| R1:
Dear Shari: Well, for starters, your fisrt layer
of impregnator shoud be IN, not ON. Second you want to leave the grout
cure for a few days before you seal it. Maurizio |
| R2:
Shari, Maurizio finally
has something good to say, for once. You should of let the grout cure
for at least 7-10 days. but you do not need to mop the floor that
much. best Regards, Stephen, Slate Expert Canada |
| Q
4229: I have a
vermont slate entry foyer. It is down with mastic on the 3/4"
decking of the house can I ruff the surface and install tile over
it? Nov21.
Reply |
| R1:
You can and we have
do it but I will not recommend it. It do not take long to rip out
the old slate and put in new slate. best Regards, Stephen, Slate Expert,
Canada |
| Q
4234: I am about
to lay a brasil Verde slate floor with tiles of 30x30cm to be finished
with a matt sealant. Can you suggest a colour for the grouting? Also
what distance would you recommend between the tiles? Thanks Amanda,
Nov21.
Reply |
| R1:
Amanda, You can use a
green colored grout but I would use just Natural Grey grout. and the
grout lines be about 1/4" wide. best Regards, Stephen, Slate
Expert, Canada |
| Q
4235: My spouse
and I just installed an African Slate flooring, it's beautiful, but
do we need to do anything else? (ie seal it?). Lydia,
Nov21. Reply |
| R1:
Yes, Lydia, you should
seal it. If you like it when you wet the surface the use an acrylic
solvent based sealer. It will pull out the colors. best Regards, Stephen
, Slate Expert, Canada |
| Q 3069: Firesurround,
in old painted slate, not sealed colour uneven, can see black in patches
allover, how do i restore?, any advice would be helpful. thankyou,
Clare, Oct 21. Reply |
:R1:
Clare, you need to get
a stripper and stirp the surface back down to the raw surface and
let dry. Then re-seal the slate and away you go. best Regards, Stephen,
Slate Expert, Canada
|
| Q 3093: How
do you get white bleach spots off of a non-sealed black slate table
top? The bleach bottle left huge white spots where it was sitting?
Doesnt wash off. My boss is very upset, Vince,
Oct 23. Reply
|
R1:
Dear Vince: Well, the only good thing in this
picture is that it happened to your boss
and not to you! The only way to "remove" bleach marks is
to do the same thing that you do when fabric is bleached, which is:
NOTHING! Anyway, if the table top was ground and honed having it re-ground
and re-honed by a professional stone refinisher will do the trick.
If it's a natural cleft finish, then it's terminal. And, by the way,
sealing it with a stone impregnator will hardly do anything even for
the future. Maurizio |
| R2:
Vince if you wet the
white surface, does it disappear. If so put a coat of acrylic sealer
over top . First try to pour pure Muratic acid on it and scrub with
gloves on and then rinse it off. Then seal it. best Regards, Stephen,
Slate Expert, Canada |
| Q 3096: I
bought a pool table from a friend of mine and i was wondering if there
is a secret to filling in the screw holes with wax, filling the seams
with wax (three piece slate), and putting the felt back on. if I could
get some instruction on these matters it would be much appreciated.
Thanks.Tim, Oct
23. Reply |
| Q 3047: email me relevant
information on tiling my fireplace with slate. I've already tiled
it. My concern is wether or not I should apply a sealer prior to grouting.
If so which would be best to use for slate. Thank You, brady, Oct
19. Reply |
| R1:
Dear brady: What do you plan to spill on your
slate that you feel like you need to seal it?! If you're thinking
about a topical sealler (Urethane or such), then you want to apply
that a few days after grouting.Maurizio |
| R2:
Put a coat of Acrylic
sealer on it and that will make it look nice. best Regards, Stephen,
Slate Expert, Canada |
| Q
4042:
I have what I believe is a slate floor
in the entry of my home which was built in 1967. based on the condition
of other parts of the house, I don't think it has been cared for properly.
What is the proper care for a slate floor? Is there any way to "lighten
up" or enhance the color of the floor? Thanks, Joan, Oct
24. Reply |
| R1:
Dear Joan: Rip it out. You'll be glad
you did! Maurizio |
| Q
4023: we are in
the process of looking at slate for a shower. The slate is from China
and the various colors are gorgeous. We would like some advice about
using Color Enhancer to bring out the natural color and than using
a sealer to help reduce some of the problems that may result from
using slate in a shower. Is it advisable to use a color enhancer first,
let it cure and then go with a sealer? Charity, Oct 24. Reply
|
| R1:
Dear Charity: Yes, that's what you have to do.
Maurizio |
| Q
4022: My son recently
purchased a coffee table with a hexagonal slate top. The slate is
a dark charcoal gray, is very rough-surfaced and is sealed. There
are some round light gray stains and a few scratches in the slate.
What is the best was to return the top to a uniform color. He has
tried to clean it with tri-sodium phosphate and other "home made"
cleaners, with no avail. Do we need to strip the top and reseal? Ed,
Oct 24. Reply |
| Q 3057: I
have cleft copper slate from India in a foyer. It was installed seven
years ago and finished with Sparks Stone Glamor. The slate still looks
good but i was wondering what should be used for general cleaning
and whether it would be advisable to apply more of the finish after
a good cleaning. basically nothing has been used on the stone except
damp mopping and vaccuuming from day one. Thanks for any input. Jim,
Oct 20. Reply |
| R1:
Dear Jim: I don't know this "Sparks Stone
Glamour" product. Is it a strippable topical finish, or a permanent
one (Urethane-based or something)? Without that piece of information
I can't give you any advice. Maurizio |
Q 3059: We have just
had a new slate floor installed in our basement. After 1 week, we
applied 2 coats of sealer to slate & grout (Miton 42 - acrylic
solvent sealer) as instructed by the installer. About a week after
the sealer, my husband was cleaning up some construction dust, etc.
and mopped some of the new floor with a mop that contained much soap
(from a previous clean up of the old cement basement floor) DUHH!
Now the some of the grout on the slate floor has white residue in
the "mopped" areas (presumably it is soap?). I have cleaned
the grout multiple times with water and it seems to be helping a bit,
but whenever it dries, the white appears again. What I'm wondering
is if
we could apply more sealer over these areas (would it get rid of the
"whiteness") or do I just keep cleaning with water until
it is all removed. HELP! Jerry, Oct 20. Reply |
| Q
4059: Thanks for
what seems to be an unusually brilliant resource. However, I can only
find repair and restoring advice as opposed to information on how
toget things right in the first place.I've just laid a slate floor
in my kitchen. I haven't even grouted it yet. What should I do? Thanks,
Per, Oct 24. Reply |
| R1:
Dear Per: Oh, you're
wrong about that! Personally I give more advice about selecting the
right stone for the right place (when I have a chance, of course!),
than maintenance tips after the cutting of the ribbon (see my answer
to the posting 4058 right below yours!) So, I really don't know what
and how extensively you read this place, but if you had read it deep
enough you would have found out that always tell people to stay away
from slate in the kitchen. Now, please, don't ask me what you have
to do to make it enjoyable. If I -- or anybody else for that matter
-- had an answer to that, I wouldn't be telling people not to use
slate, would I! Get rid of it. It's only money! You have an option,
though: you can always ask the merchants who sold the slate to you
how to make it enjoyable! I'm sure they know everything about it and
then some!! Maurizio |
|
A 4058: Water-tight with that stone? Not in your lifetime! Yes, keep
sealing it, and sealing it, and sealing it ... It's going to be any
day now before it's sealed ... Any day ... "Now, remember, when
it comes to natural stone, maintenance is an all too important yet
neglected subject that should begin before you even select it, as
you can tell from several of this very site's postings! Don't become
another statistic! Maurizio |
| R2:
Per, Can you elaborate on what information you
are interested in? Regards Steven, Expert Panelist |
| R3:
Dear Per, If you like
it just enjoy it. Slate has it's problems but so do many other materials,
marble being just one example. A good piece of Welsh slate as I have
seen, will last hundreds of years on a kitchen floor and look even
better for it. bryan UK |
| Q
4081: My wife and
I are considering purchasing some black slate type counter tops, that
have been taken out of an old school. Can you give us any advice as
to what quality of slate that this probably is and do we need to apply
any sealant, after installation. Also, how easy will this be to have
cut? Thanks for any advice you may be able to give us, as we have
little knowledge of the pros and cons of slate in use as a counter
top. Thanks, Lonnie, Oct 29. Reply
|
| R1:
Dear Lonnie: You do NOT want to do that! Maurizio |
| R2:
Dear Lonnie, briefly
the cons, it scratches very easy and some say it's bland. The pros,
for others nothing matches the look of a well honed slate, it is impervious
to water and is resistant to most chemical attack it also cuts easily.
As for treatments, either none take a chance on one of the many commercial
treatments or if you can out up with the smell for a few day's boiled
linseed oil was traditionally used in my area. If it was used for
blackboards it's usually tops. Good Luck bryan UK |
Q
4063: Hi –
I found some 4” slate tiles that I would like to use for a small
bathroom countertop. Is slate a good choice for bathrooms? If not,
do you have any suggestions of a material that has the same look as
dull slate? Thanks a million! TARA, Oct 24. Reply
|
| R1:
Dear Tara: No. No. Maurizio |
| R2:
Yes slate is good for a bathroom countertop.
If you want to keep the dull look then just seal the slate with a
penetrating sealer. I like kind of a wet look and you can achieve
that with a surface coating sealer. This will also make the water
bead for easy clean-up. Research your sealers first in your local
area. Do not use Tile-Lab. best Regards, Stephen, Canada, Expert Panelist |
| Q
4071: Hi! my slate
countertops in our kitchen have become scuffed and scratched. I do
not believe they were sealed when installed. How do I remove the scratches?
Is there a rubbing compound that is safe? Jim, Oct
29. Reply
|
|
R1:
Dear Jim: Nope. Now,
listen very carefully to me: get rid of your slate countertop as
fast as you can. It may hurt your wallet, but remember, it's only
money! Your mental health should come fisrt! Maurizio
|
| R2:
Please do not listen to Maurizio on this one.
Your slate countertop is fine. Just go to the local Pharmacy and pick
up a bottle of mineral oil. Try a test area first on you countertop
to see if the oil gets absorbed and makes the scratches disappear.
You only have to do this once or twice a month. That is it. Please
do not rip out the slate. The mineral oil should help your troubles.
Once you have enough oil in your slate then you can try the scratch
test. Just take a sharp object and lightly run it across the surface
about an inch or two. Then just rub the scratch with your finger and
magic it is gone. best Regards, Stephen, Canada, Expert Panelist |
| Q
4078: I am in the
process of remodeling my kitchen/family room. I have chosen "imperial
red" granite for the countertops and a multicolor slate for the
floor. Are these good choices as far as performance and durability?
Easy care? Any advice is appreciated because there is still time to
make changes if I act soon. Great site! Thanks, Renee' from Fort Worth,
Texas, Oct 29. Reply |
| R1:
Dear Renee: "Imperial Red" is good.
Slate for the floor is not. Now, remember, when it comes to natural
stone, maintenance is an all too important yet neglected subject that
should begin before you even select it, as you can tell from several
of this very site's postings! Don't become another statistic! Maurizio |
| R2: Yes
you have chosen the right products. You will like your slate floor
and the granite countertop. One piece of advice is please do not use
Windex on the counter. Maintaince on the slate floor is very low.
If you like the wet look then seal it with a surface coating sealer
and just maintain the sealer once every one to two years if you like.
Just listen to me on this one. best Regards, Stephen, Canada, Expert
Panelist |
| Q 2885: We have a bit
of a problem... My school has a wonderful brass compass embedded in
the floor tiles of the main entrance hall. We were able to clean
the brass compass with vinegar. We noticed the surrounding slate tiles
are now lighter. They were gray, blue and some deep red. The
red slate seems about the same color, the gray and blue and very light
now. They had 60+ years of build up, and we thought the old wax was
coming off. What do you think, and what should we do to make them
all look alike again? Thanks for you time, Eager in the East, Oct
8, Reply |
| R1: Dear
Eager in the East: First, you try to strip all the lod build-up of
the wax, and see how the slate looks like. If the venegar only damaged
the wax, then you're in good shape. If the vinegar found its way through
the wax and damaged the slate, then you're out of luck. You may want
to consider the services of a local stone refinishing contractor,
but I doubt that they'll be able to do something for you. Maurizio |
| R2: Eager,
all you have to do is just a little bit of work and you can do this
yourself. First, strip the sealer and get right down to the slate.
Then give the slate a bath in muratic acid 50% and water. Then reseal
the floor in a surface coating sealer and no more than three coats.
Use a paint pad to apply an even coat. then just find a floor wax
and maintain the sealer with that. We use a wax called Plaza plus.
best Regards, Stephen, Canada, Expert Panelist |
| Q 2886: I
hope you can help us. We own an 1856 home with slate fireplaces that
have been painted white! We have used a paint remover to remove the
white paint and of course, realize that these mantles were probably
faux painted with black paint to look like marble...We see some indication
that this is the case. The slate is a beautiful green/black color.
Now, however, we need to know how to make (and keep) our mantles
looking their best once the paint is completely removed. Some
have suggested mineral oil with a small amount of black or dark black/green
paint. Could you tell us if you agree with this suggestion? Many thanks...Dian,
Oct 8, Reply
|
| Q 2887: Hello.
What a great site! I live in
south Mississippi and am looking for 12"x12" or 16"x16" slate pavers
(Jade green or natural grey guaged one side or two). Also, do you
recommend any sealant on pavers used outdoors (if so, which one/type)
or is it preferable to allow them to weather naturally? David, Oct
8, Reply |
| R1:
Strip all the paint off first. Once you have that done just get a
surface coating sealer and that will make it look beautiful for the
rest of you life. best Regards, Stephen, Canada, Expert Panelist |
| Q 2906: We have a
textured slate floor that receives heavy traffic every day. It
is light in color but gets a thin black film of oil and grease that
does not completely clean even after daily scrubbing. The only places
that appear very clean are where the rubber tires of the floor scrubber
spin. We are curious if there are any rubber nubbed brushes available
for Noble floor scrubbers or Clark scrubbers. We have tried many types
of degreaser products but none seem to do the trick. Thank you. Doug,
Oct 8, Reply |
| R1: 50-50
water and vinegar soak; scrub, rinse , problem gone. Tony |
| R2: Try
striping the floor. Remember that the sealer is stained with the grease
Not the slate. Strip off the sealer and reseal the slate floor with
no more than three coats of a surface coating sealer. After about
a year if may look dull then find a floor finish or wax to maintain
the sealer which will put a hard surface on the floor. Then Remember
do not use Hot Water. The sealer will come off. cold water is better.
best Regards, Stephen, Canada, Expert Panelist |
| Q 2909: I
have been in the Floor covering trade for more than 30 years now,
having close contacts with the main Architects / Designers / Hoteliers
/ Specifiers in India. I intend branching out into the natural Stone
trade, for which I know a substantial demand exists. I would be thankful
if you could furnish me with some basic start-up knowledge / info
as to what all is involved in the natural Stone / Slate line and all
that I need to know about this. Many thanks, Puneet, Oct 8,
Reply |
| R1:
I would strongly suggest finding out some other
line of work or stay where you are too. Everyone now is bringing in
slate and selling it. It is even hard for the big guys to sell slate
now let alone someone new. It will take about five years to maybe
see a profit. best Regards, Stephen, Canada, Expert Panelist |
| Q 2912: I
have a slate water fountain - which has turned colors during my
move - I love the relaxing sound but currently hate the discoloration
- If you could point me in the right direction or give me some pointers
I would be grateful. Christina, Oct 8, Reply |
| R1:
You must have one of those Chinese little water
fountains. I have the pebble one. Calcium I think is your problem.
It loves slate. Try Limeaway or CLR. best Regards, Stephen brazil
,Canada, Expert Panelist |
| Q 3039:
What is the best sealant for outdoor
colored slate tiles from Vermont? I live in the Northeast where the
winters can be harsh. Thank You, Nick, Oct 18. Reply |
| R1:
The best sealer if it
is out doors is a surface coating sealer. There are lots on the market.
You need something like a concrete sealer. This will make it wet looking
and protect your slate from the harsh weather. best Regards, Stephen,
Canada, Expert Panelist |
| Q 2927: we
have just acquired a painted slate fireplace, circa late 19th century
- mantle and vertical pieces - it needs a clean and I wondered if
you could tell me the best way to do this without removing any of
the paint as we like the colours. many thanks, Vicki, Oct
10, Reply
|
| R1:
Oh! The slate will look better but if you like
then go ahead. Use luke warn water and lightly scrub the surface.
Maybe that will work. Someone else may tell you the right way. Or
visit a paint store and ask them. best Regards, Stephen, Canada, Expert
Panelist |
| Q 2930: Our
1820's farmhouse includes a slate fireplace (oringinally used for
coal) in the dining room and 10 x 10 marble floor in the vestibule
at the front door. The slate is currently covered with mutliple layers
of paint. Any suggestions on the proper way to remove the paint? Any
helpful hints on how to bring out the natural look? What should we
stay away from using? On the vestibule, I will hire a contractor to
refinish the floor, but should the grout be applied before or after
the floor is refinshed? Thanks. Mike, boston. Oct
10, Reply
|
| R1:
Strip off the layers
of paint and you will see the beauty of slate. Yes you should grout
the floor first because it holds the floor together. best Regards,
Stephen, Canada, Expert Panelist |
| Q
2947: First, this is an awesome site, wish I
had found it bEFORE I listened to the folks at Home Depot! I’m
in the middle of a project where I am putting slate on top of a cement
porch. I have used sanded grout and it is ALL OVER the slate. I was
told that I could “simply wipe the grout off” after waiting
for ~20 minutes. This was DEFINITELY NOT the case! (and no, I didn’t
seal the slate first) What can I use to get the grout off of the slate?
In most places, the Slate has a haze. In addition, once I get the
haze and excess grout off, what should I do for maintenance of the
slate? Thanks, Denny, Oct
10, Reply
|
| R1:
Dear Denny: I really don't know. To clean grout
residue the way you describe it, tile people use some sort of acid
cleaner, but most slate don't agree with acids and get badly damaged
by them. I'd suggest you to go back to the place where you bought
the slate. They've got your money, they should be able to help. Maurizio,
USA |
| R2:
Denny, Strip off the
sealer and bath the slate in Muratic acid to get the haze of grout
off. If you have big amount of grout the use a knife. For the hard
to get ones use a steel brush. Then reseal it with a surface coating
sealer. Oh! and one more thing. Do no buy your slate anymore from
a person hired for $5.00 an hour. or Home Depot. They are ruining
the slate market with their junk stones from the quarries and low
prices. It makes us guys look bad and the slate industry. best Regards,
Stephen, Canada, Expert panelist |
| Q
2952: We
have a cleft slate floor that was recently installed in the entry
way of our home. We are looking for and effective sealant...and have
been told that mineral or baby oil would suffice as a sealant. Is
this true and what are the advantages or disadvantages of this method
as compared to other sealants. We would appreciatre any suggestions
or recommendations. Thank you, Clay, Oct
10, Reply
|
| R1:
Dear Clay: First, what
kind of staining agensts you're envisioning to spill on your floor
to consider a sealing job? Second, if it's domestic (from New England)
or Italian slate, it does not need to be sealed (it won't take any
sealer in). Third, baby oil (which is mineral oil with some fragrance)
will evaporate and seal nothing. It will only temporarily darken the
stone. An impregnator/sealer for stone will permanently seal the stone
(if it can take any of it in) without altering its original color
(with a few exceptions). If you want to darken your stone in a permanent
way, then a good-quality stone color enhancer is "your man".
Maurizio, USA |
| R2:
PLEASE do not use mineral
oil on the floor as a sealer. Only on a countertop. Just imagine you
sealed you floor with the mineral oil and someone walks in over it
and onto the carpet and up the hardwood stairs. bad Idea. Just use
a surface coating sealer and let dry over night. apply about two coats
and that should take care of any of your worries. best Regards, Stephen,
Canada, Expert Panelist |
| Q
2954: We
are currently trying to attempt to lay slate on our stair way inside
our home. We have a split entry home and the landing is already slate
so we would like to continue it on the stairs also. Currently there
is plywood on the surface which comes in contact with oak end caps
where the railings are. So we will be placing the slate on the plywood
and our thought was to have oak molding to cover where the slate meets
from the risers to the treads to cover the rough edges. Any tricks
of the trade before we begin? We have never done this before and would
like to try doing the installation. Please Help?, Nrpelet, Oct
10, Reply |
| R1:
If you want just use
a belt sander and take off the rough edge. Then just fit the tiles
where you want them to go. best Regards, Stephen, Canada, Expert Panelist |
| Q
2957: We
have just installed slate tile on our patio in Arizona, should some
kind of sealer be applied. We plan to use it as a eating area., Salzach,
Oct
10, Reply |
| R1:
Dear Salzach: My answer to the posting 2952 below
will fit your bill, too. Maurizio, USA |
R2:
We instal 5 kitchen a week in slate counertops - we recommend
a wipe down of mineral oil on a monthly or bi-weekly basis Willard
|
| Q
2975: First, I have a new brazilian Multicolor
slate tile floor in my kitchen, and I want to know what to seal it
with, if I should seal it at all. Also, when the tile is grouted,
if there is any haze on it, my local tile shop has recommended that
I remove that haze with a citrus-based haze remover formulated for
natural stone. They also recommend that I follow this haze-removal
process by rinsing the tiles with water. I understand from other entries
that a citrus-based cleaner could damage the tiles. If that's the
case, I am curious about what type of damage could occur.
Second, against the arguments of
some of the experts who post answers on this site, I have a black
honed slate slab countertop, also new, in the kitchen. (I read about
the opinions of the experts on this site AFTER having purchased
and installed the countertop.) I am not concerned about scratches
or imperfections that will invariably appear in the stone over time,
and I would rather not seal the stone. I would instead prefer to
use linseed oil or baby oil periodically to enhance the stone's
patina. Is this the best route, or should I use a topical or impregnating
sealer? If I do seal or impregnate, may I then use baby oil periodically
as an additional measure?
Finally, and also regarding the countertop,
I am under the impression that I could wipe it down as a daily cleaning
process using a slightly damp rag. I assume that process would not
cause the type of etching described on this site. Am I correct in
this assumption? If not, what can I use on a daily basis for upkeep
on this surface? Thank you very much for your help. Dana,
Oct
10, Reply
|
| R1:
34 years personal experience in the installation
and service of natural marble granite and other stone products. 1.impregnate
for lasting durability. 2.clean only with a solution of one cup of
vinegar to one gallon of water period,this will remove any and all
kitchen residues found in the average home with absolutely no harmful
what-so-ever feel free to pick my brain on a vast knowledge on this
subject. Tony |
| This
is a comment to Tony's answer: 34 years of "experience"
on the stone maintenance business and you still recommend water and
vinegar!! ... I made so much money as a stone restoration contractor
by fixing the damages made to polished marble by water and vinegar
that I used to say that I was selling vinegar by the square foot,
not by the gallon!! Fortunately, over the years, slowly but surely,
most of the "geniuses" who used to recommend that, realized
how ignorant and stupid they were. A few law suits here and there
help them to understand that they should keep their mouth shut, too.
but after 34 years you're still at that point! ... WOW, you're amazing,
man!! If you ask me, there ought to be a law to put self-proclaimed
"experts" like yourself in jail and have the keys thrown
away! This is a site for experts, pal. You don't belong here. Get
permanently lost. Nobody will miss you and your "vast knowledge"
on the subject, I promise you. Ciao, Maurizio, USA
|
| R2:
Dear Dana: I don't know about this citrus-based
product, but if at the store tell you that's formulated for stone,
then it should be all right (I guess!). The brazilian multicor slate
does need to be sealed real bad! Don't use linseed oil (too messy
and smelly). Unscented baby oil (mineral oil) is your best bet. black
slate won't take any impregnator sealer in. All in all, I feel deeply
and sincerely sorry for the choices of stone you made for your kitchen.
What to clean them with on a daily basis is the least of your concerns.
Maurizio |
R3:
Dear Dana, Hmm, well
lets see, Don't worry about sealing the black slate as the damage
won't be from absorption. If you must wipe it down with oil use mineral
oil. It won't give you the same effect as soapstone will. The brazillian
multicolor on the floor -
The citrus cleaner to remove grout haze should not hurt the slate.
It then should be cleaned thoroughly (preferably by a professional
and have a topical sealer applied. You choose based on how glossy
you want the floor to be. Regards Steven, Expert Panelist |
|
R4:
If you want you can use a penetrating sealer.
I think you would like it left dull. You can make it wet looking by
applying a surface coating sealer. Play around with your options to
see what you like best.
Dana, Yes you should
seal the multicolor slate. I like a surface coating sealer myself.
It brings out the colors and I know that there are colors in that
slate. First of all the Tile installers should not leave a haze of
grout on the tile. They need about four clean sponges to do about
every 1000 sq.ft. of tile. They should change there water regularly
and sponge down the tiles about three or four times after grouting.
This will get most of the grout off the tiles. Do not hire lazy tile
installers. So with that said you do not need the citrus based cleaner.
Dana, everyone is going to have their opinions on certain materials.
Please do not use bAbY OIL. baby oil is too greasey. If you have multicolor
on your floor then you should have the black from brazil. Although,
you can get the other four slates from brazil in slab form. I am an
expert on these topics because I have all the slate slabs here and
that is what we use them for is for countertops. We only use Mineral
Oil from the local pharmacy. Remember that you have a slate countertop
and the word Patina is used on Travertine's and marbles. Your Slate
will not Patina. I do not know who told you that but they are wrong.
That is all I do is just wipe it down with a damp rage. Nothing else.
If etching does happen then you can lightly sand it out and put more
mineral oil on the surface. It is just that simple. best Regards,
Stephen, Canada, Expert Panelist |
| Q 3024: I'd
really appreciate your guidance. We just purchased a 40yr old home
with a greenish slate entry way, it has quite a few stains...any suggestions?
Robyn, Oct 17. Reply
|
| R1:
Dear Robyn: Yes: GET
RID OF IT! Maurizio, USA, Expert Panelist |
| R2:
Robyn, I apologize for
Maurizio response. He just don't like slate. With the stains just
try to strip the sealer off if any. Then bath the slate in muratic
acid 50% with water and then reseal the slate with a surface coating
sealer. best Regards, Stephen Canada, Expert Panelist |
| Q 3036: We
have a black slate hearth and I was wondering if I could paint it
a different color. Sharon, Oct 18. Reply |
| R1:
I will not suggest it but yes people do paint
over the slate. I cannot see why you would when the slate is worth
about $40 sq.ft. and will add value to your home but the paint will
decrease the value of the slate. best Regards, Stephen, Canada, Expert
Panelist |
Q 2316:
I can't believe this happened! I hadn't seen your site, and cleaned
my slate tile with regular over-the counter cleaner w/a citric acid
base. by the way although it is very expensive here to have this installed,
my professional installer had never installed slate in a bathroom
before, I found out later, and thus he has no information.
Apparently I shouldn't have used honed black brazilian slate in the
shower and bathroom in the first place?
Apparently an impregnator should NOT have been applied?
The impregnator was the only sealer used for the grout as far as I
know. Is that enough?
I had been afraid to use anything on the slate, and thus it needed
cleaning badly. I had a left over piece and put the cleaner on it
several times over several days and nothing happened. Alas, other
sections of the tiles reacted-I can see that sections reacted and
then a swirl of a slightly different color does not react-even an
etched drip mark will stop at a color change. Overall I ruined parts
of only several tiles and not everything. It's the horrible
streaks down sections of some of the slate that are the worst-and
it is honed, so I can sand.
So, what issues do I have due to the impregnator being used-or is
that okay?
I will try the sandpaper (and find out what a right angle sander is?)
--and mineral oil, at least on the walls...probably too slippery on
the floor?
What do you suggest for cleaning the white marks left when
water dries? And what is best for cleaning the red fungus
that will grow after a few weeks...? We have a Fred Meyer and a True
Value hardware store, I'll look for Stone Cleaner, but are there sources
to purchase by mail that is my only other option?
I'm worried about cleaning the glass around the shower (vinegar and
water are suggested for the water marks) and the toilet (generally
something with bleach)? Thank you. Sharon, Alaska, July 27, Reply |
R1:
Dear Sharon: It looks like you've a nice little mess in your hands!
I don't know if brazilian slate needs to be sealed or not. Usually
dark-colored slate does not, but "usually" doesn't mean all the time.
What is for sure is that you can't use an off the shelves cleaner,
especially with citric acid in it.
but let's take one thing at a time. You ran some test on a spare tile,
I understand. Now the question is: Had that spare tile been sealed?
If it wasn't and did not adversely reacted to several applications
of the cleaner, while the tiles on your shower stall did, it could
very well be that your slate did NOT, in fact, need to be sealed and
the etch marks are on the
sealer, not the stone. That would be good news, because it would only
take the application of a Methylene Chloride-based paint stripper
to solve your problem without sanding (no stone cleaner -- including
mine -- would ever do! They will only help you with your future routine
maintenance requirements). If not ... well, I'm afraid that wet sanding
would be your only option. Yes, you would need a variable-speed right-angle
grinder / buffer with a special
attachment and special sandpaper to do the job. You would then finish
it up with application of a good-quality stone color-enhancer (it
does a better job, and more permanently that mineral oil) to bring
the whole thing back to a nice, uniform black finish. For more info
about right-angle grinders, etc., send me an E-mail at info@findstone.com.
The grout in a shower stall doesn't need to be sealed. However, now
that's sealed with a stone impregnator, that's it, leave it alone.
About the red fungus issue, sorry, but I really don't know what you're
talking about. Maurizio |
Maurizio,
Thank you for all the information in your column! I've "lemon tested"
my blue Pearl granite and it passes just fine! Well, I think so. There
are NO white marks left at all, does not seem to absorb at all-yet,
it's hard to tell, but if you look in the light right, there may be
some spots on the surface that are no longer shiny. I think that the
spot where I make coffee has some of these marks on the surface as
well which makes sense. They appear to form a random pattern
and are very slight-but perhaps I do need the impregnator after all?-
The counter has impregnator on it-but it's the kind that must be replaced
in one to three years (Stone Tech), so I figure it'll wear off and
I should just leave it? Then perhaps, should I apply your impregnator?
I've entered a question (Q 2316)--about the slate I etched with citric
bathroom cleaner.
I have three additional questions: 1. You often refer people to contact
you directly with instructions for "re-honing" or polishing etched
surfaces. Can you send me this information?
2. I have "etched" a practice tile from the honed slate (not treated
with impregnator)-and see that it is NOT the impregnator that is etching,
although I ONLY was able to etch a VERY small section-even with straight
lemon juice, the rest of the tile isn't at all as sensitive (does
absorb the lemon juice leaving a darker spot temporarily only, AND
I've tried wet/dry sand paper-I started with 400 grit which took out
the etched spot just fine and went to 600 grit. My slate must be fairly
finely honed, since it appears I ought to go even finer to avoid the
overlapped sections with scratch marks? (I tried brasso, since it
was a practice tile, to see if a finer polishing would harm it-and
that does look to be a bit finer than the surface I have-looks a little
polished (even after washing it off with soap-it must have some oil
in it as it also deepens the slightly whiter sanded area just fine).
Is there something I should use besides finer sand paper? I see that
there are Marble Refinishing Kits at our local store, although they
are very expensive? Thank you for this information, via the aw site-I
see that I have NOT ruined my tiles forever :-)
3. Some sites suggest that a dilute solution of Ammonia and water
and/or bleach and water might work just fine as regular cleaners for
slate, is this true?
4. I have also run into folks who recommended pH neutral isopropyl
alcohol and water (50/50 solution) for the granite counter top (and
also the slate?). It seems to be working just fine on the blue Pearl-attacks
the grease and dirt with no streaks (also does a nice job on the stainless
steel appliance front). Do you see any problems using this? Thank
you Sharon, Alaska |
R1:
The dull areas where you made the coffee, etc. are probably due to
the presence of the sealer. If It hadn't been "sealed" (actually,
it was never sealed, because no sealer ever went IN that stone!) you
wouldn't have the problem. So, either you remove the sealer using
a paint stripper based on Methylene Chloride (which is what I would
do if it were my countertop), or you wait until it wears off (3 or
4 years, maybe).
As far as re-honing your hone-finished slate, you should be using
metal grade sandpaper, 400 and 600 grit, using it wet and, possibly,
with a low speed right-angle grinder / polisher, to have a very uniform
and scratch-free final result. Forget about the marble refinishing
kits for your slate.
I don't know the long-term effects (if any) of bleach and ammonia
on slate, so I won't make any statement, but, as a gut feeling, I
just don't like the idea. Maybe who told you that has a better knowledge
of chemistry applied to slate than I have. The Isopropyl Alcohol solution
should be all right (by the way, all alcohols are
pH neutral!) Maurizio, USA |
| R2:
The product that
this customer has is black honed slate from brazil which has Iron
Pyrite through out the stone. The Citric acid base will etch the stone
and no slate is not like granite. If the product is in the shower
then you have to put a surface coating sealer on the stone. There
are swirls in the stone which looks nice. You will get a Grey and
black swirl because the Grey slate comes from the same quarry so you
will get a bit of both in the stone. Impregnator was good to use but
GlazeNseal would be a better company to use. They make sealer for
slates and most of the rest of the sealers on the market are for limestone's
and travertine's like Stonetech, Miracle, SCI. The white marks left
by water everybody should know that is the Hard water Calcium build
up. Limeaway or CLR will do the trick. Red Fungus should not grow
if the shower is kept clean and washed down everyweek. With the question
about sanding we use wet, light grit sand paper and lightly sand it
out. In my bathroom I just use luke warm water and a light detergent.
No Abrasives like Ajax or comet. Slate on the countertop will etch
if sealed with a penetrating sealer or left unsealed. We always suggest
using mineral oil or even better a surface coating Acrylic based sealer.
best Regards, Stephen, Canada, Expert Panelist. |
| |
| Q 2250: I have a piece
of rough (unpolished) green slate, which I use as a table top. Someone
left a bottle of massage oil on it, and it left a stain.
Is there a way to remove it? Robert, July 18, Reply
|
| R1:
Dear Robert: Yes. You have to poultice the stain out using acetone.
Maurizio, USA |
| R2:
Try lightly sanding it
out. If that does not work and your table is not sealed then put a
light coat of mineral oil on the whole table every month or every
two weeks. Every try Oil, Gas, and Water in a glass. All the rest
sinks like the stains and the oil comes to the surface. It works and
will go away after awhile and you won't have any scratches from sand
paper. best Regards, Stephen, Canada, Expert Panelist |
| Q 2219: I have domestic
autumn slate installed in my master bath shower. There is a wet look
lacquer that has been used as a sealer for about 1 year. Soap scum
and calcium deposits warrant a very good cleaning. What is the best
way to strip this? What is the best sealer to put on slate in
a shower that will be used daily? For future reference, what is
the best way to clean slate? Veronica, USA, July 15,
Reply |
| R1:
Dear Veronica: To remove the current topical sealer you'll need to
use a potent paint stripper based on Methylene Chloride (anything
else won't cut it). After that I don't know the answer to your other
questions. I'm not that familiar with slate and, most importantly,
I don't believe in shellac-type topical sealers. Maurizio, USA |
| R2:
You can use Limeaway
or CLR to get the Calcium deposits off and there are some products
on the market like a solvent based striper. That will work. Got to
a local hardware store or a concrete factory and look for a concrete
striper. It will do the same. It will do almost the same as GlazeNseal
wet Look. best Regards, Stephen, Canada, Expert Panelist |
| Q 2208: How can I refinish
an interior slate floor that has had little or no maintenance for
10 years. Plenty of scuff marks, liquid spills and just plain
dirt. Will sanding have any adverse effect on the slate?
I was told a mixture of turpentine and linseed oil may work. What
proportions of each are to be used? Any suggestions would be welcome.
Thanks, Nick, July 12, Reply |
| R3:
You will have to give
the floor a good cleaning. I suspect you have a textured floor which
we use a steel brush to actually loosen up the dirt that is stuck
to the floor. Then if it has been sealed before you may need to strip
the sealer and then reseal the floor. Elbow grease works best but
if you have a big floor then rent some equipment that will loosen
up the dirt. Please DO NOT USE Turpentine and linseed oil. Find a
concrete sealer or an acrylic base solvent sealer and that should
do the trick. best Regards, Stephen, Canada, Expert Panelist |
R2:
The first thing we need to do is to know what turpentine and boiled
linseed oil is used for. It is to color enhance the stone or bring
out richer color tones seen when wet. When sealed after application
it can be durable for an interior low to medium traffic area with
proper maintenance.
To deep clean the floor here is one simple approach:
Start by renting a low rpm buffer and a scrubbing attachment with
lots of water and a neutral pH stone cleaner.
Rent or purchase a wet/dry vacuum.
Purchase a neutral pH stone cleaner.
Mop the area with lots of water and a neutral pH cleaner (make the
area real wet.)
Scrub it with the buffer.
Remove the dirty mixture with the vacuum.
Repeat until clean.
You may find the scuff marks don't come out, you then decide if you
want to color enhance (linseed & turpentine) or buy one off the
shelf, and seal the floor.
Get in touch directly with me or Maurizio for more detailed responses.
Regards, Steven, USA |
R1:
Dear Nick, If the scuff mark is created by shoes surface traffic it
can be cleaned up easily by an alkaline cleaner with a soft brush,
Clean the residue before it dries and rinse with neutral cleaner.
I suggest to seal it with Sealer; There is sealer available in Low
sheen with slight enhancement (Slate Sealer) or if you prefer Enhancing
with no sheen result. Importance of Sealer; U. V. Resistance &
breathable. I hope this helps. best regards, TAN, Singapore. |
| Q 2169: I have a slate
floor that is about 50 years old and am interested in procedures
or products that we can use to restore them. They are in fairly
good shape but probably have many coats of wax etc. that make them
look old. We are planning to refinish the adjacent hardwood floors
and thought that sanding the slate might also make sense. Thanks!
Jay, July 8. Reply |
| R2:
You have to strip your
sealer/wax off of the slate. You should have a textured floor and
that is what you want. If you do want a honed surface the you still
should strip the sealer and use Diamond pads instead of sand paper
to achieve a honed surface. best Regards, Stephen, Canada, Expert
Panelist |
| R1:
Dear Jay: No it won't make any sense at all!! Have your slate
stripped from any coating of old wax by a professional janitorial
company. Maurizio, USA |
| |
| A 2132:
I have some Lilac Mist slate Iit looked fine when purchased but after
sealing it, little greenish spots appeared it looks like its
coming from within the stone... What could this be and how can I fix
it? Tbear, June 28, Reply |
| R2:
Lilac can either be the
lilac slate or Indian Autumn from India. Mother nature made the material
so what is in the stone is in the stone. It was up to your installer
to look and inspect the stone before installation. but some green
is in the stone. Now if the is something between the stone and the
sealer then you should strip your stone and give it a bath of muratic
acid which won't hurt because we do the same all the time. best Regards,
Stephen, Canada, Expert Panelist |
| R1:
If you think you have something developing, wash the stone with 1
part to 5 part muratic acid. Rub with a bristle brush and rinse thoroughly.
Follow all safety instructions for use. It will require resealing
when it is complete. Regards, Steven, USA |
| |
A 2116:
Slate seems to be a tiny market here in Northern California therefore
knowledge about it is scarce & complicated by the fact that "Slate"
is a generic term used to describe any shale type stone. Ever since
American-Olean went out of business, I have not been able to find
professional support for Northeastern gauged slate. The quarries we
buy it from, sell it.....period.
Consequently, something goes wrong with every job. We continue to
use slate because it works really well with our radiantly heated designs.
My current black slate floor installation went very well but a few
months later the clients cleaning people were able to turn it gray
with white spots with whatever method they used to "clean" it.
Do you have cleaning products and procedures for slate? At the
core of the cleaning problem I believe is the alkaline nature of the
water and the soil in this part of the country (northern California).
Thanks, Mark, June 26, Reply |
| R1:
Dear Mark: I'm glad to hear the good news: "Slate seems to be a TINY
MARKET here in Northern California" Thank goodness, I add! You
can get my free maintenance guidelines for residential stone installation
by hitting the link at the bottom of this in advice section of left
side bar. Treasure them; you'll be glad you did! Whatever is good
for marble, is good for slate, too. but do you know what really
baffles me? It appears that you've been installing slate for quite
a while, but never bothered -- at least until now -- to find out what
kind of advice to give to your all too important customers about its
proper maintenance. And now you blame the cleaning people! ... Are
they supposed to be the ones who have to know about natural stone
and its requirements? As far as a solution to the problem you're reporting,
there's none. Maurizio, USA |
| |
| A 2114:
My 2 1/2 year old double sink countertop is a slab of green slate.
Unfortunately, quite a few white stains have begun to appear and
rapidly spread around where the faucets connect to the slate.
What is the best thing to use to remove these stains? Thanks! Dana,
June 26, Reply |
| R2:
All you have to do is
shut of the water and remove the taps and just use Lime away or CLR.
Then you should use Mineral OIl regularly to seal the countertop if
you do not have a sealer on it already. best Regards, Stephen, Canada,
Expert Panelist |
| R1:
Dear Dana: Nothing, really. If it's an accumulation of mineral deposits,
you could not use any such product like "Lime-away" or the like
because it would damage your slate permanently. Slate is not the right
stone for countertops. Get rid of it and use something more practical.
Unless, of course, the dealer who sold the slate to you (and made
good money in the process) has some secret solution to your problem.
I mean, they probably did some serious homework before they started
selling slate! ... Maurizio, USA |
| |
| A 2096:
We have raw gray slate that we want to use to make a patio. It has
been outside for 2 yrs. and has turned a greenish color. Can
you tell me how this can be cleaned to make it look like it did originally?
Thanks, Sharon, June 20, Reply |
| R2:
50/50 Muratic acid will
remove the mildew and any staining. I don't know about the greenish
color but just try a test tile first to see. best Regards, Stephen,
Canada, Expert Panelist |
| R1:
Dear Sharon: It's most likely mildew. Try to power-wash it with a
solution of water and bleach. It should work. Maurizio, USA |
| |
| A 2095:
We moved into our first house about a year ago; it has a slate shower.
As time has gone on, I've become aware that half of the slate seems
to have been finished with some sort of protection, while the other
half has started to dust up or flake. because I'm new to the
house-owning game, I'd like some advice on what to do. Is there a
product used specifically for slate to coat it? Should this be done
yearly? Should the entire shower be redone? Can I do this myself or
is it wiser to get a pro to do it? I'm also interested in any cleaning
tips people might have; at the moment I scrub the floor and walls
while I'm showering, using no cleaner of any sort. Is there a special
slate cleaner? Thanks, Nicky, June 20, Reply |
| R2:
First of all where is
the Dusty looking slate, On top or on the bottom. The sealer person
might have sealed the bottom of the shower to protect it from the
water and left the top unsealed. If it is the othe way around or something
different then You might have some layers flaking off of the slate.
In a case like that we wash the slate really good and left dry. Put
a heater in there. There maybe water behind the slate but you and
I don't know and lets not think that until you find out that is the
case and if it is then you may have to reinstall the slate in the
shower. but for now, make due with what you have. Let the shower dry
and put two or three coats of an acrylic solvent based surface coating
sealer on it and do this Once every year or two. best Regards, Stephen,
Canada, Expert Panelist. |
R1:
Dear Nicky: "dust up and flaking", uh ... I'm afraid you've got water
behind those tiles.
It's terminal. Waste no time and redo the entire shower stall. Do
get a pro and choose a better stone than slate for your shower (marble
or granite, perhaps) Make sure that the professional installer is
not a "Michelangelo" and that the installation is not done "butt-joint".
Maurizio, USA |
| |
A 2069:
I recently purchased a home in boston. The master bath has a black
(flat) slate counter top. (It took me awhile to determine that it
was slate - so go gently this is new to me). The counter top doesn't
seem to have any sealant. Water stains the countertop
along with any product that hits the surface. I'm faced with the challenge
of: 1) properly cleaning the counter to remove the stains and 2) sealing
the counter top so to prevent future stains. I do not want to change
the surface tone or shine. I love the charcoal grey flat color.
Thanks for tips on both care questions and product recommendations.
Also any information on service providers in my area would be happy.
Hab, June 16, Reply |
| R2:
Disregard everything
you heard about slate for countertops and listen to me. The water
stains can be cleaned by LimeAway or CLR. For tough stuff use Muratic
Acid 50/50. To seal the countertop the is black maybe from brazil
,Mineral Oil once or twice a month and that will make you happy. best
Regards, Stephen Canada, Expert Panelist |
R1:
Dear Hab: You have a third option, which is the one that I recommend
wholeheartedly:
GET RID OF THE SLATE COUNTERTOP and replace it with a charcoal granite
instead (it will be polished, though.)
Those "stains" are not stains, These are etch marks and only a proven
professional stone refinisher will be able to repair them. What's
more, they will happen over and over again, no matter what kind of
"magic" sealer (including my own!!) you will try to treat the stone
with. Maurizio, USA |
| |
| A 2008:
Hi, I used "Zap" tile cleaner on our slate flooring, and now our
tiles have white discoloration everywhere, and the tile scratches
easily. I tested a small area first, and the cleaner seemed to work
beautifully, so I proceeded to clean the entire kitchen. After about
a day or two, the irregularities began to appear, and have gotten
worse over time. What can I do to repair the tiles? Janet, June 3,
Reply |
| R2:
I can tell that Maurizo,
Does not like slate. First of all there are options. I will give you
one. Strip your floor with a solvent stripper like a concrete stripper.
Then let dry and reapply a surface coating sealer for Slate from either
GlazeNseal or Universal Slate or find an Acrylic Solvent based Sealer
or a good concrete sealer. Oh!, Throw away your Zap! best Regards,
Stephen, Canada, Expert Panelist |
| R1:
Dear Janet: Rip those tiles out and, now that you've learned the hard
way that you do NOT want slate in a kitchen, install another more
suitable material instead. At first it may sound too a radical solution,
but, trust me on this one, it will be the only one that works. It
will save you a lot of money (by not attempting useless solutions),
not to mention the most important factor of the equation, that is
your mental health!, Maurizio, USA |
| |
| A 1947:
I recently acquired a slate (type yet to be determined) fireplace
mantle (complete). The slate is black (very dark gray) and has fine
engraving on it's vertical surfaces. I have been told that it comes
from the east coast and was created circa the 1880s. Sometime after
it's manufacture someone painted gold veins (faux granite, I suppose)
all over the surface. Sometime later, someone painted with a medium
green low-gloss enamel (lead ?) paint. There may be other coats under
the green. I don't know this yet. I would like to take the slate back
to it's natural color and state. How do I clean the layers of
paint off without damaging the integrity, condition, surface or value
of the slate mantle? Thank you! Russell, May 22. Reply |
| R2:
Slate is like a baby,
It is harder than you think. You don't have to be very very careful
with it. Use a paint stripper because that is what you have to remove.
Then use a Solvent Stripper maybe it is the same but if the stone
was sealed then you should remove that too. Remember that you will
have to use Elbow Grease. Once you remove everything then you can
seal the slate with any sealer you like to give you the desired finish.
I like the wet look. best Regards, Stephen, Canada, Expert Panelist |
| R1:
Dear Russle: Very, very,
very, VERY carefully!! Use a paint stripper based on Methylene Chloride.,
Maurizio, USA |
| A 1866: Dull:
I have a dark gray/black slate floor in the entry way of my
home. The home is 40 years old. We have lived there for 20 years.
The floor is in need of sprucing up. It looks dull and is
off-color in some places. I have been using a retail cleaner
and sealer (wax) for slate approximately every 6 weeks. Would it be
wise to have it commercially resealed at this point? What about buffing
with a rented electric buffer...would that help. Anything else that
you could suggest to improve it's appearance? Thanks,May 15.Reply
|
| R3:
Just Strip the sealer off the floor
and reseal the slate. best Regards, Stephen, Canada, Expert Panelist |
| R2:
Dear May:
Keep using what you've being using. Maurizio, , USA |
| R1:
It depends on what you
want the floor to look like. For instance, if the material retains
its texture and you want it to look glossy, you then are looking for
a topical coating. Many of these need to be buffed after application.
If you like the look of the wax, but don't like the six week interval,
then you may want to clean the area with a neutral pH cleaner, color
enhance with a good color enhancer, and then coat it with wax. With
your concern about its appearance a buffer is a good thing to have.
Many families in Europe with stone and tile floors have them. Regards,
Steven, USA |
| |
| A 1860:What
is the best way to clean slate floors? They are old chalk boards
that we've cut and laid. They are dull. Any ideas?
Thanks,Jody,May 14.Reply
|
| R2: You
have to seal the slate with an acrylic surface coating sealer to bring
our the color like when it is wet. Then cleaning is a breeze. best
Regards, Stephen, Canada, Expert Panelist. |
| R2:
Dear Jody: Try treating them with some mineral oil and see how it
grabs you. Maurizio, USA |
| R1:
It may be that cleaning is not the problem. You may want to get them
professionally honed. From there, it becomes a cleaning and maintenance
issue. Regards, Steven, USA |
| |
| A 1847:My
fireplace has slate on the raised hearth. The slate is marked
(crayon, scratches) also there is what looks like
an oil stain blotch on it. Do you know how I can go about
cleaning this up. I have tried water and a scrub brush and it lightened
it a little (the oil looking blotch). Thanks, Galotti, May 14. Reply
|
| R3:
Maybe try a light sanding
if nothing else works and reseal the slate. best Regards, Stephen,
Canada, Expert Panelist. |
| R2:
Dear Galotti: The Crayon should not represent a problem. You should
be able to get rid of it by scrubbing it off with a brush and warm
water (the warmer the better). For the oily stain, use a poultice
with talc powder (baby powder) and acetone. More than one application
may be needed, but if the stain is not too old, it should work. Maurizio,
USA |
| R1:
Try a poultice on the oil spot. It is important to correctly analyze
what caused the spot in order to use the correct active ingredient
for the poultice. Use some diatomaceous earth and mix with acetone,
thickly cover the spot and tape plastic over it. Let stand for 24
hours remove the poultice and vacuum the spot, inspect and reapply
until the spot is gone. You may then want to impregnate the slate.
Regards, Steven, USA |
| |
| A 1838:I
have a new natural slate floor and shower in a hall bath which has
been sealed twice (within the last 2 months) with a penetrating sealer.
I spilled a few drops of liquid antibacterial hand soap on the floor
and it stained -- It will not come out with warm
water. what else will work? also, the shower floor is 4x4 tumbled
slate -- any suggestions as to how to best keep it clean and free
from soap scum etc. i do my best to wash it down with the water after
each use, but over time there's bound to be buildup. please help.
sphlah, May 14. Reply
|
| R3:
You have a penetrating sealer on the slate. When you wet the stone
so the stain disappear. If it does then you need to seal the slate
with an acrylic solvent based sealer. For your shower floor just maintain
it with a little bit of sealer once a year. For water stains and Calcium
just use Limeaway or CLR and Elbow Grease. best Regards, Stephen,
Canada, Expert Panelist. |
| R2:
Dear Sphlah:
Saying "Natural slate" you're saying absolutely nothing
(actually, too much!!). What happened with the spilling of the anti-bacterial
soap is that it has etched (corroded) the very surface of the stone
and, since I assume it's a natural cleft finish, there's nothing that
anybody can do to fix the damage. Such surface damage has absolutely
nothing to do with the rate of absorbency of the stone - but with
it's natural chemical makeup - and so the application of an impregnator
(which deals with porosity of the stone by reducing it), no matter
how good, is totally useless to prevent what happened. Let's say that's
the wrong stone for the wrong application. Maurizio, USA |
| R1:
Many slates will require
multiple applications of impregnators. i.e. one per day for 5-6 days
per application. From there, it will need to be redone as necessary.
The real dilemma is how to properly clean and maintain the installation.
Write to Maurizio for instructions. He is happy to help. Always pay
attention to the grouting and caulking as well. Plan on touching these
up when you first see a separation. Regards, Steven, USA |
| |
| A 1803: We
have a slate entry with brick border an are about to seal the surfaces.
Would you Please advise which of the many products-
is the preferred item? big difference in price and I wonder
if one gets what one pays for. Also, the brick driveway needs sealing
as well. What do you advise for that surface? Thanks, Alan, May 14.
Reply |
| R3:
I fortunately know how to remove
residue of old sealers and reapply new coats. if it was my floor and
driveway I would want a wet look because of the properties of a surface
coating sealer. The water will bead off. You will have to reseal the
driveway once a year or two but inside you might not have to for a
lifetime, it depends if the floor look dull to you. best Regards,
Stephen, Canada, Expert Panelist |
| R2:
Since it
is outside, what are you trying to achieve? All the types you mentioned
will help some. You should test each on a sample and see which one
was easiest to apply and gave you the look you want. You want something
that is UV stable. Plan to do this a couple of times per year. Regards,
Steven, USA |
| R1:
Dear Alan: No matter
how expensive, "permanent" topical sealers are a NO-NO in my book,
on cleft-finished slate. They will wear down eventually, of course,
but you will have a very hard time to find anybody that will know
how to remove the residue of the old sealer before applying a new
one. I would encourage you to use a janitorial-grade topical finish
(thermoplastic or metal-interlock). At least they can be maintained
and stripped easily when necessary. Maurizio, USA |
| |
| A 1780: Have
a black slate hearth. Had a bad fire in my house; walls down, etc.
Some kind of animal (cats?) got in the house and peed on the slate
leaving white marks. I've tried everything to clean it but nothing
helps. Aside from professional help, is there anything I can do? Maria,
May 5. Contact |
| R3:
Try pouring pure Muratic acid on the slate and adding water. (Do not
breed in the acid----bAD) scrub the slate down good. The acid should
absorb in to the stone pulling out any oders. Then you should seal
it with a surface coating acrylic solvent based sealer. best Regards,
Stephen, Canada, Expert Panelist. |
| R2:
beside re-honing
the etched spot try applying mineral oil periodically. Regards, Steven,
USA |
R1:
Dear Maria: There's
no guarantee of a final result, but before you call a pro you can
try
the following, providing that we're dealing with a smooth surface
(like a black-board):
Use wet sandpaper (metal grade) starting with a 100 / 120 grit, and
go all the way up to 400 and, if available, 600 grit. It will take
a lot of patience. Each grit must be worked slowly and thoroughly
(figure approximately 5 minutes each grit) in the constant presence
of water. Each grit will have to overlap the pattern generated with
the previous one. Once
you're finished with the honing process and your surface is nice and
smooth, you can obtain depth of color to blend in with the rest, by
dressing the stone surface with baby oil. Let the first application
dry completely (one day or so), then apply again if necessary. Maurizio,
USA |
| |
A 1748: HELP! I have
a slate floor in the bathroom which should be black but is a
nasty grey and covered in white marks . So far I have cleaned,
sealed and tried acid all to no avail. Any ideas? Punani, April 22.
Reply |
| R2:
Strip the floor and let
dry. When you wet the floor it should be what you want. If this is
the case then seal the floor with an acrylic solvent based sealer.
best Regards, Stephen, Canada, Expert Panelist. |
| R1:
Yep, Call a professional refinisher. You have
etched the surface and it needs to be rehoned. Regards, Steven, USA. |
| A 1737: Can you suggest
a product I can use to clean a slate heart? Thanks, Marion, April
20. Reply |
| R1:
Q) What is wrong with it? Generally use a neutral ph stone specific
cleaner for everyday care and specific products for specific stains.
Regards, Steven, USA |
| |
| A 1712: We recently installed
a multi-color natural slate 16x16" in our home. We have sealed with
Stone Enhancer - which says it will provide a "wet look". We have
put 2-3 coats on but once it dries, it returns to the dull look.
I want it to look the way it does immediately after applying the Stone
Enhancer - i.e. the "wet-look". Do you have any suggestions? Judy,
April 15. Reply |
| R3:
Stone Enhancer no does not work. ask
for a sample of the wet look Lacquer. best Regards, Stephen, Canada,
Expert Panelist |
| R2:
Dear Judy: Change color enhancer. Maurizio, USA |
| R1:
You need a different product. It will be a top coat that is specifically
labeled as shiny. It will not be very long lived though. Regards,
Steven, USA. |
| |
| A 1649: Wow,
I am impressed with your site and hope you can assist me.
I recently had green American slate installed in a shower, both the
floor and walls. It now appears after about three months of usage
that the installer sealed the floor, not the walls. There are, what
I think, soap streaks appearing on the shower walls. I tried
cleaning the walls with a stone soap cleaner purchased at Home Depot,
but it didn't work. I don't think that the streaks are hard water
deposits because I have a water softner. Any suggestions? Ric, April
4. Reply |
| R2:
Maybe it is Calcium.
Try Limeaway or CLR. Make sure you seal your whole shower. You will
save money in the long run and not rip out your shower. best Regards,
Stephen, Canada, Expert Panelist. |
R1:
Hey Streaker ---- I've done plenty of slate showers. They may have
not buffed the walls when they sealed the grout. This will cause streaks
sometimes, I had to tear out a white marble shower once because my
guy failed to buff the sealer into the faces when he applied it to
the grout joints. You may be able to use impregnator (sealer) again
and get rid of the streaks Try one tile see what happens.
Call the company who did the installation and find out what they sealed
the grout with, That might solve the question of what to use to try
and eliminate the streaks. Soap won't stain slate, or I would never
have had so many happy customers. Tile Guy, USA. |
| |
| A 1581: I have installed
a black slate hearth on a fireplace. I cleaned the slate with stone
cleaner, tried soap and water, and plain water. Then it was sealed
with stone sealer. but there is still some discoloration in
the slate (some gray areas). The client would like the hearth to be
a consistent shade. Can anything be done to correct this since it
has been sealed. Can stone sealer be tinted with some type of dye
before applying another coat? George, March 23. Reply |
| R2: That
is just in the stone. You cannot get rid of it. That is the beauty
of Natural Stone. In England and U.S.A. and Canada People used black
shoe polish. I would not sit on the hearth after that though but Ya
that is what they used to do. best Regards, Stephen, Canada, Expert
Panelist |
| R1:
Dear George: Now that you've applied an impregnator (which is not
supposed to be applied on black slate to begin with), you will have
a hard time to rectify the situation. I'd suggest you strip the sealer
off (thank goodness it couldn't go inside the stone) by using a paint
stripper based on Methylene Chloride. After that, you can apply a
so called Stone Color Enhancer. In the old days black slate was treated
with mineral oil (baby oil will do just fine!), but then, there weren't
so many salesmen back then!! Maurizio, USA |
| |
| A 1447:
I have just had a black honed slate worktop fitted in my kitchen.
The fitters used a coating sealer on it without asking me
and I have asked them to remove it (as it now looks like formica rather
than slate!) and use an impregnator. They have used 'Lithofin
Wax-Off' to remove the coating sealer but there is still a speckled
finish on the slate and I don't want to use the impregnator until
it's completely stripped and cleaned. Any idea why there are still
remnants of the coating and any ideas for what I should use to strip
and clean it properly? Also, I was going to use either Lithofin or
HMK S34 impregnator (both with Silicone). Is there any difference?
Finally, I was then going to use HMK protecting paste on top - do
you recommend this? Many thanks in advance. Julian, England, Feb 16,
Reply |
| R2:
Strip the sealer with
a solvent stripper and just use mineral Oil one or twice a month.
best Regards, Stephen, Canada, Expert Panelist |
| R1:
The short answer is no. The slate is not very absorbent. The impregnators
help it repel oil and water from seeping in. I believe that a coating
as the fitters used was entirely appropriate. Ask them if they have
something with a low gloss. If not then have them rehone the surface
to remove the coating. You will then
have slate and only slate. It will scratch
and patina. If you ever want to darken it use mineral oil. Steven,
USA |
| |
| A 1426: I
have recently made a slate table top using honed black Italian slate.
I am having a nightmare trying to seal it - I have used Lithothin
Stain Stop but this still allows lemon and white wine to mark it.
I have also tried linseed oil mixed with white spirit but with no
joy. I keep getting White marks keep appearing. 1.
How can I remove these? 2. How can I prevent it happening in the future?
- i.e. can I seal it to prevent this? Regards, Rebecca Feb 12. Reply |
| R3: Try
to lightly sand the stains down. Or try Muratic acid in a small dose
with water. You can seal the slate with a mineral Oil once or twice
a month or permanently put a surface coat of an acrylic solvent based
sealer on it. It will etch a bit into the sealer but you can catch
it before it hits to slate and just reseal and touch up in the area.
best Regards, Stephen, Canada, Expert Panelist |
| R2:
Hello Maurizio, May I just agree with all you have said. There seems
to be an obsession with sealers. If you don't want stains, buy Formica.
The advice you have given is sound and honest, Rub it down and slap
on some oil. Roy, UK |
R1:
Dear Rebecca: You've got it all and hopelessly wrong!
1. black Italian slate -- very much like its New England counterpart
-- doesn't take any sealer to begin with (too dense).
2. A penetrating sealer -- any penetrating sealer -- (which in your
case won't penetrate; but that doesn't mean anything, besides a waste
of money and time) does one thing and one thing only: it helps prevent
staining by clogging the pores of the stone. No other protection whatsoever,
other than that..
3. Lemon juice, drinks, etc. do NOT stain slate (nothing does!). They
etch it, is their acidity corrodes it, and there's no sealer in the
entire world that even advertises to help prevent these kinds of surface
damages.
4. I the surface of the slate is smooth (like a chalk-board), then
you can fix those damages by wet-sanding them starting with a 120
or 240 grit and go all the way up to a 600 grit (you'd need a variable
speed right-angle grinder/buffer). Then blend the finish in by rubbing
a little bit of mineral oil (baby oil will do just fine). If the surface
has a "cleft" finish instead (natural from the quarry),
there's nothing that you can do.
Conclusion: wrong stone for the wrong application, under the assumption
that a "miracle-in-a-bottle" stone sealer could solve the
problem. Maurizio, USA |
| A 1378: If
you do get scratches on slate, is there a way to make them
less visible? Jan 28. Reply |
| R4:
Just a touch up of sealer. If you did use a
wet look sealer. If the slate is on a countertop then use mineral
oil if unsealed. best Regards, Stephen, Canada, Expert Panelist |
| R3:
If the slate
is unpolished, then use a light sandpaper to remove the scratch. If
the slate is polished, the same process may be used but the area will
require repolishing and it is difficult to match the level of gloss.
Regards Arun, India, Reply |
| R2:
Use mineral oil or lightly sand the scratch
and use mineral oil. Regards, Steven, USA |
| R1:
Yes, with baby
oil (or any other mineral oil). Ciao, Maurizio, USA, |
| |
| A 1351: We
recently purchased a 1965 home that has slate flooring in the foyer.
The previous owners had applied several coats of floor wax to
the slate which has now yellowed. What is the best method of
removing the wax from the slate floor? Thanks! Pat, Jan 21. Reply |
R3:
The slate is not yellow
the wax is. The same wax they use on peel and stick vinyl floor tiles.
Strip the wax ALL off with a solvent based stripper or concrete stripper.
That should do the trick. Then reseal it. best Regards, Stephen, Canada,
Expert Panelist.
|
| R2:
Dear Pat, Old wax deposits
are difficult to remove. There are commercial varieties of wax removing
chemicals called strippers. You should use one of them . As the house
is old, wax may have penetrated deep in the pores and it may be very
difficult to remove the entire wax. Regards Arun, India
|
| R1:
Dear Pat: Get
hold of a janitorial company that does stripping and waxing and hire
them to strip your floor. Maurizio, USA, |
| |
| A 1295: I am looking
to find a product called Dress Slate. I sealed my interior
slate floor with it 18 years ago and it has lasted this long.
I would like to do it again, as the slate is beginning to look
dull, but I cannot find the product and am afraid to try anything
else. Jan 2. Reply |
| R1: Dress
Slate is no longer available. There are various sealers available
which provide excellent protection .The choice of the sealer
depends upon the finish you desire and the use of the area being
treated. If you can provide us with more details, we can suggest
you the sealer. Regards Arun, India, |
|
|
|
A 1204: We recently had smooth slate
countertops installed in our bathroom. The installers put on a sealer
but it is kind of smeared. Can we clean it off and start again
somehow? What should we use to clean it and assuming we can get
is clean, what should we use to seal it? Dick, USA, Nov 21. Reply
|
| R4: I
actually have to agree with most of what Maurizio's statement. In
my case I would strip the countertop and just use mineral oil on it
for the rest of it's lifetime. but the product is not from England
I don't think. brazil is producing a nice black, Grey, Purple, and
Green slate slabs in a honed surface. That is what I think Dick has.
If not then the black Slate from Quebec, Canada. best Regards, Stephen,
Canada, Expert Panelist |
| R3: Dick, Call the original installer and have him/her apply
another coat of the sealer and not to leave until it is thoroughly
dry and buffed. best regards, Steven, USA |
| |
R2: I have to assume, for starters, that we're dealing with
a domestic slate (from New England). Typically, only these (and the
Italian ones) come with a hone-finish. Domestic slate is indeed very
dense and its staining is only superficial. It doesn't absorb an "impregnator"-type
sealer very well (only in a spotty way, which, I seem to understand,
is exactly what happened there). In fact, most domestic slate producers
recommend not to seal it. The removal of a sealer is always a difficult
operation and there's no guarantee that the whole thing is going to
come out in a uniform way. With light-colored stones it's not a real
issue (even if some of the stuff remains
in, nobody could tell), but it's not the case here. before getting
into the attempt of removing the sealer, I would suggest you to rub
some light mineral oil over the surface of the stone (baby oil will
do just fine for this
purpose), and see how it looks once you're done. If you have a nice,
uniform black surface that looks like velvet, that's the way your
slate is going to be at the end of the treatment that I have in mind
(baby oil is not
permanent and will eventually evaporate). If you like what you
see, then it's time to try removing the sealer, by using a strong
paint-stripper (read the label on the can, it should have Methylene
Chloride in it. Nasty stuff: use rubber gloves and keep your window
wide open!). Apply it liberally, then, using an old towel, gently
rub it for 10 minutes or so, making as sure as possible that you're
treating in equal amount of rubbing the whole surface. Eventually,
you will wipe the whole thing dry by using a clean towel (which you
don't care about). Again, when you dry, try not to be partial! I don't
think that the end result is going to look glamorous, but it should
be a dark gray. Overall although a little spottyand streaky here and
there. It shouldn't really matter (because of the test you conducted
before with the baby oil). Now, instead of using a useless Impregnator,
you will be applying a so called Stone Color enhancer, the same way
you did with the baby oil. The only difference is that the type of
mineral oil making the product will not evaporate. Maybe, you will
consider doing a couple of applications (wait until the first one's
real dry). DO KEEP ME POSTED. I will accept that as legal tender for
my advice! Maurizio, USA
|
| |
| R1: Hi, Use a stripper even a paint remover will work.
Then seal it with an impregnator. Pini, USA |
| |
| Thanks for the incredibly detailed advice!!!!! Dick |
Q 1022: Care: Help! How can I restore
luster to a slate floor on the balcony. It
is in the sun and salt air and has paint splattered on it. It looks
cloudy, dull, and lifeless! It was sealed when it was installed
7-8 yrs ago. Helen, USA. June 27 reply
R2:
Try to Strip the paint off and the Sealer with a
solvent based sealer. Then Reapply a surface coating sealer once a year
or every two years, because the surface of the sealer will wear off over
time. It is not hard. Pour the liquid in a tray and use a paint pad to
get an even coat. best Regards, Stephen, Canada, Expert Panelist
R1: Firstly you will need to use a proprietary product to strip
the old sealer. You can be quite vigorous in removing the paint (?coarse
sanding) as it will blend in after re-sealing. I suggest mopping
the floor a couple of times to collect some of the salt from the stone
prior to resealing.. Remember to change the water regularly. Regular
application of sealants is advisable (~4years) to keep a protective coating
on the slate and cut down on the work in the long run.
Jim, Expert Panelist, Australia
A 995: I want to coat slate tiles to
render the color of the tiles more uniform. Can you recommend
a product to do this? Reg, Usa. May 23 reply
R2: NO
because mother nature made the tile and there is no way to change the
color. There are slate that are uniform in color but maybe the one that
you have is a multicolored slate. Just wet your floor and see what colors
pop up at you. You can seal it with a surface sealer. Try it. best Regards,
Stephen, Canada, Expert Panelist.
R1: Slate is a natural product and therefore gives you a myriad of colours
by design. Trying to make the colours the same after laying is like
making leopard change its spots. If you do find a product (I don't
know of one), it will only give you a superficial colour change that is
likely to deteriorate over time. Regards, Jim,Expert Panelist, Australia
A 947 a: I am house sitting a home that has
black slate flooring around and on the fireplace hearth. The water
here has much calcium in it, and I had a plant that moistened the hearth
slate, leaving a large white calcium mark on the slate. How
can I remove this? Rose, USA, March 23, Reply
R2: Try Limeaway
or CLR in small doses. You will not get this of in one try. Also try a
steel brush to remove the hard calcium. Once you have removed it then
seal the slate with an acrylic solvent based sealer. That will take care
of the scratches. best Regards, Stephen, Canada, Expert Panelist.
R1:
If you had so much Calcium in the water in your neck of the woods, you
would have to eat it, instead of drinking it! If what you have is really
a deposit of Calcium (or any other hard mineral), you should be able to
remove it by scrubbing it with some water and "0" steel wool. If it won't
come out like that (and I doubt it will), than you have a surface damage,
the result of some sort of chemical reaction between the water in the
flower pot -- together with the chemicals contained in the dirt and, possibly,
some added fertilizer -- and the make-up of the stone. Since -- from what
I can understand -- the slate that you have has a cleft finish, as opposed
to a
ground finish, you can't regrind it (that would be the only way to actually
repair the damage). Let me ask you a question: if you wet that particular
area with some water, does the "stain" disappear until it dries? If the
answer is yes, try this: Mix some boiled linseed oil with some mineral
spirit (both available at any hardware store) in a proportion of 50 /
50, then, using a little rag, wet the stain with the mixture, trying at
your best to blend it in with the rest of the stone surface. Repeat if
necessary. That should do it. Good luck Maurizio, USA
Comments? Complaints? Compliments?
info@findstone.com
The views expressed in this section are not of FindStone. |
| I've
just spent about ten minutes looking at your site, but from what I
did see I am very impressed. It looks very helpful and user friendly
I will use your site for various things in the future, Thank you for
this resource. Randy, CLEANING CO. , FL, USA. |
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