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low and high moisture readings affected by air RH
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04-15-2014, 01:20 PM #4
jpsflooring Newbie *
Status: Offline Posts:2 Threads:1 Joined:Apr 2014
Thank you Jason and Eaadams

I understand we should not take any decision based on the C575 meter.

The thing is that this concrete slab is only 4" thick, it has a vapor barrier and it shows to be dry enough or, not depending on the air RH. I know concrete absorbs moisture in the air, but I did not expect it to be that sensitive. On the other hand if it is being affected by the air RH, once we
install the flooring it shouldn't be affected by the moisture in the air.

We are installing a polyurethane floor, poured in place, over a rubber mat glued to the slab.

We plan to put some fans and do a better test before installing the floor.

Thank you for your input

Juan Pablo

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