|Delivery Lead Time:||Within 15 Days||Material:||Aspahlt And Paper|
waterproof shingle underlayment,
felt shingle underlay
18LB - 83LB Asphalt Roof Shingle Underlayment Black Building Paper
Roofing felt (felt paper, asphalt felt paper) is processed by making the paper base soaked in low softening petroleum asphalt, then covered with high softening petroleum asphalt, and last coated with isolating materials such as talk powder.
Specification of ASTM D4869
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