Barid,
Thanks for the pictures, it helps greatly to see the problem.
This slate appears to be sealed with a urethane or an epoxy. We usually
see these product flake over time and yellow where most acrylic do not yellow
as much and don’t usually flake.
This project defiantly needs to be tested prior to bidding
it. If this is an urethane or an epoxy you are going to need to strip with a
paint stripper Jasco is my preference or Strip X another option. These
is a product call Beanie Doo that I have been told work well and is not a
Methl. based product.
To get started try the following
1.
Test stripping the floor with a high quality stripper , No cheap
stuff, if you can strip it then the job just got a lot easier, if not try stripping
using the Jasco or Strip x which can be purchased at any paint store or big box
store.
2.
If you can remove it with the Jasco or strip X then bid
the job according, caution these are paint strippers and if you get it on the
paint it will strip the paint. Be sure to tell you customer this may happen and
they may need to repaint. Be sure this is spell out in your contract, that you
are not responsible for repainting.
3.
Once the floor is stripped , then clean the floor with a
neutral cleaner.
The water damage,
First suggest taking moisture test to see if the slate is still
getting wet or is wet.
If it’s dry then clean the stone, and remove all the loose
materials. You may need to use a mild acid to remove the effloresces.
Let the customer know it still may shed.
If the stone is wet suggest to the customer they fix the
moisture problem.
Sealing the floor.
There are topical coating you can use. There is one that I like
from Richard James Chemical is called StoneLoc. I used a similar product that
the franchise company I worked for owned the rights to. The good news is
that the same inventor that invented this product for Union Carbide has now made
this product. It work great on slate and flamed granite. It will not yellow and
the finish breaths.
You do need to follow the direction but this product will give
you a mat finish, a semi gloss finish or a gloss finish depending upon the
application applied. The good news is this product repells oils, grease,
acids and more, one of the best products on the market I have seen.
This product will also help with the shedding.
Dr. Fred know of the product I’m referring to from that
franchise company and he has seen it work.
If I can be of any other assistance please advise
John E. Freitag
President/Director
The Stone and Tile School
Office 407-567-7652
Cell 407-615-0134
jfreitag@thestoneandtileschool.com
From: Baird Standish
[mailto:bairdstandish@gmail.com]
Sent: Wednesday, May 13, 2009 5:28 PM
To: Restoration and Maintenance
Cc: Baird M Standish
Subject: [sccpartners] Slate Floor Delamination
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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