Does a Vapor Barrier Prevent Mold?

A vapor barrier doesn’t by its nature prevent mold; that’s something you have to pursue with a number of different tactics. However, because a vapor barrier helps to reduce humidity in your crawl space by blocking off moisture from the earth, it can help you reduce the possibility for mold in the future. Some vapor barrier materials, like CrawlSeal™, have been treated to resist mold, however.

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