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SkyFlex Radiant Barrier
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. 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 perms making it an effective vapor retarder.