Permeable water-resistive self adhesive underlayment/air barrier building membrane
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United States of America Patent
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Dec 31, 2020
app pub date -
Jun 28, 2019
filing date -
Jun 28, 2019
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Abstract
The present invention relates to a water resistant, UV resistant, vapor permeable, air barrier underlayment assembly comprising a substrate of permeable polyester, a permeable copolymer acrylate coating bonded to a permeable polyester substrate and a pressure sensitive permeable copolymer adhesive secured to the permeable acrylate coating. The underlayment is resistant to water and direct ultra-violet (UV) light for a period up to at least one year prior to coverage by cladding.
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