... soaked in low-softening petroleum asphalt, then covered with high-sof Asphalt roofing felt is processed by making ... the paper base soaked in low-softening petroleum asphalt, then ... in waterproof materials, packing, buliding damp proofing.Asphalt felt Roll Size 1x20m, 1mx16m, 1mx19m, or ... 55lb, 60lb, 70lb etc building paper and asphalt roofing felt