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Walgreen's Slabs
12-06-2011, 09:10 PM
Post: #61
RE: Walgreen's Slabs
Where in the world did you find those OLD probes???? Those are well past their date for certification.... Tongue

JD Grafton
Concrete Answers for Flooring Problems
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12-07-2011, 06:39 AM (This post was last modified: 12-07-2011 06:42 AM by Ernesto.)
Post: #62
RE: Walgreen's Slabs
(12-06-2011 08:29 PM)eaadams Wrote:  The carpet example is valid for what it was used. Astm is moving towards a standard where the perm rating of anything on top of another thing. I.e. your vapor retarder needs to have lower permeance than the carpet, your mms needs to have a lower permiance than your vapor variety, if you want to use products that breathe use a carpet on top. (the real objective is anti floor covering industry to drive spec writers to polished / stained concrete - but flooring people are too busy fighting for table scraps)

Anyway it is valid. But always remember that moisture movement does NOT mean that it is still not a wonderful environment for mold.

I'm just glad I do residential. I never appreciated spec writers, architects and GC's who don't understand moisture issues.

Quote:JD said, "Consider a porous carpet on a wet slab, everything breathes and the moisture goes right through.
The adhesive would be affected by the alkalinity over time."



I understood what he said but that applies to anything really.
(12-06-2011 09:10 PM)CC Solutions Wrote:  Where in the world did you find those OLD probes???? Those are well past their date for certification.... Tongue

I found Jason's stash.

Stephen Perrera dba
Top Floor Installation Co.
http://www.tucsonazflooring.com
http://www.floorsavior.com
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12-07-2011, 07:27 AM
Post: #63
RE: Walgreen's Slabs
I still have a couple of the old one piece Wagner's taht had the special drill bit and the reader and probe in one.... I'll start the bidding at $50...
Tongue

JD Grafton
Concrete Answers for Flooring Problems
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