Certainteed Smart Vapor Retarder 12'x 10'



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CertainTeed MemBrain Smart Vapor Retarder is a vapor retarder sheeting intended for use with unfaced, vapor permeable mass insulation (fiber glass and mineral wool) in wall and ceiling cavities.

Quick Overview

    MemBrain Smart Vapor Retarder is a polyamide film that changes its permeability with the ambient humidity condition. The product's permeance is 1 perm or less when tested in accordance with ASTM E 96, dry cup method, and increases to greater than 10 perms using the wet cup method. This process allows closed building envelope systems to increase their drying potential with seasonal climatic changes. With a high resistance to water vapor in winter, MemBrain reacts to relative humidity by altering pore size, allowing water vapor to pass through it.
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MemBrain Smart Vapor Retarder is formed by blowing a 2-mil thick film of polyamide (Nylon)

Additional Information

Manufacturer: BlueLinx
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