Baird Standish, I love that name, you should be a private
detective or an actor ;-)
The stripper I would use is DBX and it is made by K&E
Chemical. It is a non-meth stripper and is very effective, you do have to let
it sit for longer but you won’t get gassed out, nor will the homeowner.
Just follow the instructions. Works great on lacquers (solvent acrylics), urethane,
and epoxy.
Regarding sealing, I never seal with anything that I would not
want to strip later, if I were asked to come back in 5 years to refinish. If it
is a coating you will use, make sure there is absolutely no moisture
transmission or it will flake. Additionally, the slate itself will flake (delaminate)
if it can’t breathe, it will often flake even if it does breathe but I
would not want to give reason to blame the sealing. I used the RJSC Stone
Loc on 32,000 sf. of sandstone and it flaked off in some (a lot) of areas. You
also have to apply with an HVLP sprayer, mine cost about $2500. This was 10
years ago when I did this, maybe the product is better now. It also is a 3 part
component and when activated it has a short life. So you have to activate just
what you need or you will have some expensive waste. They say it is a
impregnator, it is definitely a coating. If you do this I would let the stone
dry at least 2-3 days.
One of the wonderful things about slate is that it is so soft.
You can resurface it beautifully with a Tynex brush, 80 or 120. This leaves a
beautiful matte finish. You want to be working with a pressure extractor to get
all the slurry completely removed. Then you can just use a silicone impregnator
to bring out the color (I like silicone because it is compatible with the natural
oils in the slate) or a true color impregnating enhancer. If they want gloss
try to talk them out if it as it is an old design trend, and the above reasons.
If they insist on high gloss then you will obviously have to coat it.
Hey, you could go with the very fine 240-320-500 Tynex to
get a gloss I imagine, have not tried it.
From: fhueston@gmail.com
[mailto:fhueston@gmail.com] On Behalf Of Dr Fred
Sent: Thursday, May 14, 2009 8:16 AM
To: Restoration and Maintenance
Subject: RE: [sccpartners] Slate Floor Delamination
John is correct you need to strip it, However the Jasco is
some really dangerous stuff, there is an alternative from a company
called Peel A Way. Just finished consulting on a job where this was used and it
did a great job. Takes a lot longer.
As far as sealing you will need
to eliminate the moisture problem first and than seal. The product John is
talking about is excellent.
On Wed, May 13, 2009 at 5:28 PM, Baird Standish <bairdstandish@gmail.com> wrote:
Hi,
We
have been asked to strip, clean and seal an old residential interior slate
floor. We have done this kind of thing before and it appears somewhat
straight forward assuming we can test to figure out what gets the gook off the
best. Problem is that there is water damage around the edges that has
created delamination on some of the stones. How do you all deal with this
kind of issue? I have warned the owners that this problem may not go away
if there is constant water migration underneath the stone. Hard to say if
this is recurring thing. it looks like the wood floor in the next room
are warped from a flood of some kind, but at least part of the floor is
adjacent to an exterior wall. It is sort of a sun room. I posted some
pix.
Thanks
for any advice.
Baird
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Frederick M. Hueston PhD
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