waterproof membranes

Features:
Black building paper: meets ASTM-D779 ASTM-D828 ASTM-E96
ROOFING FELT ASTMD 4869 /226

BLACK BUILDING PAPER  /ROOFING FELT /BITUMEN PAPER

Features:
1) Black building paper: meets ASTM-D779 ASTM-D828 ASTM-E96
2) Specifications: 30min, 60min, 90min, 120min
3) Asphalt roofing felt: 15#, 30#, 13#(no. 30), 8#(no. 15), 90#