Can closed cell spray foam be applied over dirt in a crawl space.
I have done in energy audit on the home yesterday, that is 30 x 30 square. Half of it is a full basement with a concrete floor the other half is a crawlspace with dirt. The foundation walls are stone and cement, the customers complain of moldy smell mainly in the summer. There is no insulation in the floor joists, the house is very cold. Would you recommend spraying closed cell foam over the dirt in the crawl space to seal the moisture, also coming up the walls to the sill plate just in the crawlspace area? Then in the unfinished basement area do the ceiling? I appreciate your opinion.
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