Adhesives and Moisture

[Ernesto]

Quote:I think I can read between the lines of your post. Please remember there is no correlation between MVER and relative humidity. A perfectly dry slab that is sprinkled with water for a few seconds will have a terribly high MVER, and this can have an effect on adhesive bond.

Yes, but remember are we not saying that when the floor is covered by an impervious or semi-impervious floor covering that the moisture in the slab then migrates upwards and evens throughout the slab (equilibriates), therefore causing higher mver?

Isn't that the crux of the reason why we are now told that cacl tests do not work good enough?

But where is the criteria for lessening bond strength with higher rh in the slab. Thats what it says.

Do you have any scientific data that states other wise besides what manufacturers tell us?

I think all you inspectors better start rethinking the way you write up reports on this subject.