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sonicjesus t1_ja1tzjs wrote

I'd avoid doing so. The concrete will always be colder than the wall, and you're just inviting condensation.

Every contractor I have worked for always leaves half inch gap from the floor, no matter where it is in the house.

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ezbake_fpv t1_ja25o00 wrote

Drywall is installed 1/2" off the floor, but it should be fastened tight against the bottom plate. There should never be unsealed openings into the wall space. Concrete and walls will be different temps, but the foam is a thermal insulator, so excessive condensation shouldn't be a factor.

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