Tag: drainage plane
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Understanding Air Barriers, Vapor Barriers, and Drainage Planes
Subtitle: These three terms refer to different materials that are easy to confuse Images: Is housewrap a vapor barrier? What’s the purpose of building paperTypically referring to Grade D building paper, this product is an asphalt-impregnated kraft paper that looks a lot like a lightweight asphalt felt. The Grade D designation has come to mean…