Step Two: Vapor Barrier

A vapor barrier liner will isolate your home from the earth it sits on. These liners come in a variety of sizes, but the BEST options are at least 20-mil thick. A 20-mil or thicker vapor barrier is longer lasting and more durable than thinner liners. Not only will it prevent moisture damage in your crawl space, but it can also lower your heating and air conditioning costs by up to 20%.

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