Vapor barriers are one of the foremost tools builders can use in their construction projects to protect the building from mold, mildew, and radon gas. A vapor barrier is a type of vapor retarder that is meant to prevent the build-up of moisture in building projects, most commonly used for under slab and crawl space encapsulation. Americover is the premier source for various vapor barrier options that meet state and federal codes, including ASTM.

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