Skyflex Air Barriers

Your Best Choice for a Reliable Air Barrier Solution

SkyFlex™ is a tough, flexible air barrier for use in residential and commercial building applications. The product consists of two layers of aluminum deposited on a layer of woven polyethylene. When exposed to air films or enclosed air spaces in building cavities, SkyFlex’s low-emittance exterior layers reduce radiant heat transfer.

Fast Facts

• Available for residential and commercial applications
• Flexible for fast and easy installation
• Adds R-value to building envelope, Economy, and high-performance options
• Available in 500 square foot rolls in 48″ or 51″ widths

An Effective Air and Vapor Barrier

SkyFlex™ is designed to be used as a primary air enclosure boundary between conditioned and unconditioned air in the building envelope. Air barrier materials are measured by air permeance. An air barrier permeance equal to or less than 0.02L(sxm2)@75 Pa, as tested in accordance with ASTM 2178, qualifies as an air barrier material. It’s air permeance levels fall below 0.02L(sxm2)@75 Pa, making it a very effective air barrier material. As a Class I vapor retarder, this product also effectively reduces vapor permeability. SkyFlex™ has a vapor permeability of 0.01 perm,s making it an effective vapor retarder.

Improving Thermal Resistance

When installed in walls, ceiling, or floor joists, SkyFlex™ low-emittance exterior layers can boost the wall system’s R-value or thermal resistance. When used for one side exposed to the attic, SkyFlex™ adds an R-1.7. When 0.75 inches is installed in an enclosed air space, the product adds R-2.9; for 1.50 inches of SkyFlex™, the added R-2.6 can be calculated using the ASHRAE book of fundamentals.