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Two men installing MemBrain Continuous Air Barrier.

Vapor Retarder 

Get the best technology to stop moisture damage, in any climate, all year long. 

Ensure long-term occupant comfort. 

A crucial layer of wall construction, manage moisture to keep interiors optimized. 

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Cut-away illustration of CertaWrap wall detailing layers of protection

The Smartest Barrier Available 

MemBrain allows moisture to move as levels change, adjusting to changing circumstances. 

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A roll of MemBrain Vapor Retarder on a gray background.

Go Beneath the Surface… 

OPTIMA 
A roll of Optima insulation on a gray background.
InsulPure 
Attic image of InsulPure R 38 insulation installed kraft face side down with packaging on top
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CertaSeal INT 

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Make the Genius Choice. 

Help homes breathe easy with a vapor retarder that adapts to any environment. 

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