Gas and vapor barriers, also known as membranes, consist of materials or structures used to prevent gas and other vapors from penetrating a surface. A prominent use of such barriers is to place them ...

Vapor barriers are a crucial part ... Cover any outside air vents or skip them in new construction. Inside a crawl space, ...

Vapor retarders are sheet materials used below slab-on-ground floors to limit the amount of moisture that migrates into and upward through concrete slabs. If unchecked, moisture can cause floor ...

Membrane/Sheeting The membrane/sheeting form of vapor barrier is a solid, flexible material designed for building wraps, foundations, and other applications. Rigid Board Rigid board form vapor ...

VaporBlock G is an under-concrete-slab vapor barrier produced with a layer of post-consumer recycled content, qualifying under the LEED Building Design and Construction 2009 Edition, Materials and ...