Asphalt shingles with a fire-retardant additive
A roofing shingle having a fire-retardant material added to the shingle in specific locations is provided. In one aspect a roofing system with two or more asphalt-coated substrates and a sealant material provided between the substrates is provided. The sealant material adheres an overlying and under...
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Sprache: | eng |
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