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When to Test
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11-22-2009, 11:36 AM #1
CFI Newbie *
Status: Offline Posts:2 Threads:2 Joined:Nov 2009
When testing for moisture in newly poured concrete slabs on a large commercial project ,when is the correct time to start testing to get meaningful readings? I have some job supers wanting me to start testing before all the windows are in! I have heard that the RH in the slab should be in the low 70's - Ninety days after the pour,after the building is tight and the AIR CONDITIONING has been running for 30 days. Not the heat, but AIR CONDITIONING as this removes the moisture from the air which will allow the movement of moisture out of the slab. Is this true? Many Job supers think that temporary heat will get the job done. I have heard that some heaters such as "Salamanders" actually add moisture. Is this true?

I would like to be able to refer to a document that I could give my customers that tells them what is the criteria for meaningful moisture testing and what needs to be done to lower the RH in the slab as quickly as possible.

Is there an authority where I could get these guidelines?

Thanks for your help.








Messages In This Thread
When to Test - CFI - 11-22-2009, 11:36 AM
RE: When to Test - Ben - 11-24-2009, 12:23 PM
RE: When to Test - CC Solutions - 12-16-2009, 11:45 AM

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