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POWERply® Heavy Duty Base Sheet is a smooth-surfaced, fiberglass bilaminate-reinforced modified bitumen membrane constructed with non-woven fiberglass mat/fiberglass scrim bilaminate reinforcement and an asphalt coating that is modified with an SBS elastomer.
It is installed in hot-applied asphalt or cold adhesives in modified bitumen systems where a high-tensile modified base sheet or flashing ply is desired.
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