Patent ID: 7977259

Claim:
A roofing membrane comprising: a flexible, non-woven mat having a core consisting essentially of polymeric fibers, the polymeric fibers being substantially uniformly dispersed throughout the non-woven mat and being thermally bonded together at their points of intersection by polymeric material of the fibers, said mat having a top side and a bottom side; a layer of an asphaltic material disposed on said bottom side of said mat, said asphaltic material comprising 2 to 18% by weight of a saturant asphalt, 40 to 58% by weight of a blown coating asphalt, 0.5 to 5% by weight of a Styrene-Butadiene-Styrene elastomer, and 20 to 65% by weight of a filler, said layer being disposed on said bottom side in an amount of from 3.75 to 6.25 lbs/100 sq. ft, of surface area of mat; and a liquid parting agent applied on at least said top side of said mat.