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Adhesives and Moisture
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04-30-2010, 09:33 AM #23
Status: Offline Posts:3 Threads:0 Joined:Apr 2010
Outstanding. Thanks CC...

Have you given any thought to the other risk associated with 'damp' slabs in contact with organic materials: water activity (aW)?

If some species of mold can be supported when the aW is greater than 0.68, then one could argue that the slab should never exceed 68% Rh - (or for the sake of easy numbers, 70% Rh).

I come from the water damage restoration industry, and in the past I have been asked to assist in determining 'how dry - is dry enough?' when evaluating a concrete slab. This has been difficult for me to answer, but my approach began with identifying the risks that were present. The warranty of the new flooring was secondary to my concern over the potential of the wet slab supporting microbial growth - especially in areas where organic materials are in direct contact with the concrete. If there was wood framing in contact with the slab, I held for the 70% ERH threshold.

Any thoughts on that logic? Cool

Thanks again.

Ken Larsen








Messages In This Thread
Adhesives and Moisture - Ernesto - 02-03-2010, 01:41 PM
RE: Adhesives and Moisture - CC Solutions - 02-03-2010, 03:53 PM
RE: Adhesives and Moisture - Ernesto - 02-05-2010, 08:12 AM
RE: Adhesives and Moisture - CC Solutions - 02-05-2010, 11:56 AM
RE: Adhesives and Moisture - Ernesto - 02-17-2010, 03:32 PM
RE: Adhesives and Moisture - CC Solutions - 02-17-2010, 10:12 PM
RE: Adhesives and Moisture - Ernesto - 02-18-2010, 09:04 AM
RE: Adhesives and Moisture - CC Solutions - 02-18-2010, 09:34 AM
RE: Adhesives and Moisture - Ernesto - 02-18-2010, 03:19 PM
RE: Adhesives and Moisture - CC Solutions - 02-19-2010, 07:13 AM
RE: Adhesives and Moisture - Ernesto - 02-19-2010, 08:34 AM
RE: Adhesives and Moisture - CC Solutions - 02-19-2010, 11:07 AM
RE: Adhesives and Moisture - Ernesto - 02-19-2010, 05:31 PM
RE: Adhesives and Moisture - Ernesto - 03-08-2010, 03:11 PM
RE: Adhesives and Moisture - CC Solutions - 03-09-2010, 06:48 PM
RE: Adhesives and Moisture - Ernesto - 03-10-2010, 03:06 PM
RE: Adhesives and Moisture - CC Solutions - 03-18-2010, 06:31 PM
RE: Adhesives and Moisture - Ernesto - 03-19-2010, 06:01 PM
RE: Adhesives and Moisture - tbrown - 04-08-2010, 10:24 AM
RE: Adhesives and Moisture - CC Solutions - 04-08-2010, 08:10 PM
RE: Adhesives and Moisture - Ken Larsen CR WLS - 04-29-2010, 08:38 AM
RE: Adhesives and Moisture - CC Solutions - 04-30-2010, 09:03 AM
RE: Adhesives and Moisture - Ken Larsen CR WLS - 04-30-2010, 09:33 AM
RE: Adhesives and Moisture - CC Solutions - 05-01-2010, 09:40 AM
RE: Adhesives and Moisture - Ken Larsen CR WLS - 05-01-2010, 10:37 AM
RE: Adhesives and Moisture - CC Solutions - 05-02-2010, 08:18 AM

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