How MemBrain™ Works
Remains moisture tight in winter when humidity in the cavity is low
Increases permeability in summer to let moisture escape when needed
Watch the video at certainteed.com/membrain
MemBrain is unique among vapor retarders because of its ability to change its molecular structure. When humidity is low, it functions as a standard vapor retarder, like asphalt coated kraft paper. When humidity is high, it ranges from Class III (semi-permeable) to permeable. MemBrain is the only product on the market that straddles three vapor retarder categories.
Continuous Air Barrier & Smart Vapor Retarder
CertainTeed’s exclusive MemBrain™ Continuous Air Barrier and Smart Vapor Retarder is the industry’s most advanced technology to create a better performing home.
This revolutionary solution can provide a continuous air barrier along with advanced moisture management and a Class A fire rating in a single product, helping achieve Complete Comfort. It’s another reason why choosing CertainTeed means you’re installing much more than trusted high-performance insulation products. You’re installing confidence.
Water Vapor Permeance
Why is MemBrain so smart?
|Perm 0.01 to 0.1||Perm 0.1 to 1||Perm 1 to 10||Perm 10 to 100|