Sealed attic systems reduce air leakage and energy loss through the roof and improve insulation performance while also protecting against damaging moisture build-up within the conditioned space.

Vapor-permeable, breathable membranes used in sealed attic systems:

• Reduce heating and cooling costs
• Allow vapor to pass through to avoid condensation
• Act as a secondary weather barrier, providing water resistance to protect the attic interior in case of roof leaks
• Reduce the possibility of ice damming

DuPont™ Tyvek® AtticWrap™:

• Has a perm rate in the high 20's, well above the minimum required
• Uses a metalized layer on the back side, which creates a low emmissivity (low-e) surface to save energy by reflecting radiant heat
• Has undergone extensive testing; data shows an average 10% heating and cooling energy savings

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