Insulating Crawl Space With Dirt Floor

How to insulate a crawl space with a dirt floor holding back moisture.
Insulating crawl space with dirt floor. Whether the crawl space has vents or not moisture is the first problem to limit. Applying spray foam to the dirt floor of your crawlspace may be one of the easiest and most effective solutions and if so then you would be best not to insulate the joists over your head and just heat that space instead. If you would like to keep your crawl space vented because you live in a low humidity environment we recommend insulating the crawl space floor with fiberglass or rock wool mixed with spray foam for air sealing.
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