ASTM Bitumen waterproofing membrane roof membrane from China
Asphalt roofing felt is conformity with ASTM standards of the USA
The specifications of the roofing felt are ASTMD-4869#15 ,4869#30 and ASTMD-226#15 ,226#30,.
The roofing felt is widely used as underlayment which is under asphalt shingles. Its saturation rate is 100%,that’s to say, both water and air cannot enter.
Below is the roofing felt description
Width:36''(0.914m)Roll Contents:216 sq.ft(20sq.m)
Rolls per pallet:52