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Asphalt roofing felt is based on the paper base which could soaked in low-softening petroleum asphalt. In North America it has more than 150 years of history till now, it is proved that the durability of the raw material is more than 30 years. This product is specialized in waterproof materials, packing, buliding damp proofing.Asphalt felt Roll Size 1x20m, 1mx16m, 1mx19m, or as customer’s optionAsphalt felt Tensile Strength: 0.05-0.10MpaAsphalt felt Breaking Elongation: 240-370N Weight of per rool: 25lb, 30lb, 40lb, 45lb, 50lb, 55lb, 60lb, 70lb etc