Crawl Space Restoration - Vapor Barriers 

What is the purpose of installing a Vapor Barrier?

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Vapor barriers, also referred to as moisture barriers, are simply a sheet of polyethylene plastic laid on the dirt surface of a crawl space. The vapor barrier prevents moisture in the ground from penetrating into the crawl space area and potentially damaging the exposed wood and insulation. It encourages moisture to drain into the soil, so there is not a layer of water trapped just below your crawl space for long periods. It also helps control humidity levels in your crawl space. In addition a properly installed vapor barrier also guards against any crawl space moisture from becoming a breeding ground for mold and a host of other problems