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12-06-2011, 09:10 PM #61
CC Solutions Concrete Moisture Evangelist *******
Status: Offline Posts:1,065 Threads:69 Joined:Dec 2009
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
JGrafton@ccsolves.com

12-07-2011, 06:39 AM #62
Ernesto Concrete Moisture Expert *****
Status: Offline Posts:606 Threads:33 Joined:Sep 2009
(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

12-07-2011, 07:27 AM #63
CC Solutions Concrete Moisture Evangelist *******
Status: Offline Posts:1,065 Threads:69 Joined:Dec 2009
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
JGrafton@ccsolves.com








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