carpeting on a new concrete floor

by Susy B

Q. How long after the concrete floor is poured can I put permanent carpeting down?

A. Concrete takes 28 days to fully cure. While it is curing there is moisture escaping from the concrete in the form of vapor.

Covering the concrete with glue and carpet before 28 days will increase the chances of the glue not bonding properly and the carpet having a damp, musty odor.

A vapor barrier should have been installed under the new concrete floor to help slow the amount of moisture vapor from the sub-grade from passing up through the concrete. If a vapor barrier wasn't used under the concrete, you can spray a moisture blocker onto the surface that will absorb into the concrete and help block any moisture vapor transmission up through the concrete and into the carpet.

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