Patent ID: 7927695

Claim:
A roofing composite comprising: a thermoplastic outer layer having a first surface and a second surface, the outer layer comprising at least 50 wt %, by weight of the outer layer, of a thermoplastic polyolefin having a crystallinity of at least 25 percent as measured by differential scanning calorimetry, a melt temperature (Tm) from 120° C. to 175° C., and a melt flow rate (MFR) of less than 0.8 dg/min (230° C., 2.16 kg); a thermoplastic elastomer layer having a first surface and a second surface, wherein the first surface of the thermoplastic elastomer layer is bonded to the second surface of the thermoplastic outer layer; and an insulation layer having a first surface and a second surface, wherein the first surface of the insulation layer is bonded to the second surface of the thermoplastic elastomer layer by extrusion, heating, radiation, mechanical bonding, or chemical bonding; wherein the thermoplastic elastomer layer comprises the cured reaction product of from 20 to 60 wt % poly(ethylene-co-propylene-co-diene), from 20 to 60 wt % polypropylene, and from 20 to 40 wt % mineral or paraffinic oils.