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howard.wheaton 10-18-2008 11:38 AM

Gravel crawl space. Plastic vs concrete
I have a gravel crawl space and looking to keep out the moisture and place insulation. It is best to install a thick plastic, or have a concrete floor poured. It's only $4k for a interior drain tile and 3-4" on concrete, but not sure if pumping concrete, that has water content, is good to have inthe crawl space. Granted the mosture will go away once the concrete cures, but is all moisture in the air good?

Termite 10-19-2008 12:12 AM

The moisture in the concrete isn't evaporated, it is chemically utilized in the hydration process. I'd have no moisture-related concerns about placing concrete in a crawl space. None at all.

If you do concrete, use a 6mil vapor barrier under it for good measure.

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