Is a 12-Mil Vapor Barrier Good Enough for My Crawl Space?

In some cases, you might see someone claiming that a cheaper 12–mil vapor barrier is fine for your crawl space. The comparison between the 12–mil vs. 20–mil vapor barrier goes much deeper than just the cost, however. If you choose the higher-quality 20–mil vapor barrier for your crawl space, you’ll be more thoroughly protected from moisture.

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