Abstract: A thermoplastic polyolefin (TPO) roofing membrane is made by blending a new polypropylene based elastomer (PBE) or plastomer (PBP) and polyolefin copolymers. The new PBE or PBP offers superior flexibility over conventional polypropylene roofing membranes for easy installation. The new narrow molecular weight distribution and broad crystallinity distribution of the PBE or PBP results in excellent heat welding strength and wide heat welding windows of the said TPO membrane.

Abstract: A single ply mechanically embossed roofing membrane in a roll form for use in commercial applications on flat and low pitched roofs. The roofing membrane preferably includes a scrim or reinforcement sheet sandwiched between a top layer and a bottom layer, wherein the bottom layer is completely embossed with various configurations forming alternating ridges and valleys. The embossed roofing membrane improves roll blocking upon installation. The embossed roofing membrane can be installed by fully adhering or mechanically attaching to the roof deck.

Abstract: The present invention is a single ply building membrane comprising a single ply membrane with a base and a cap layer and a top and bottom surface, having a predetermined printed design on the cap layer, and a predetermined texture on at least one surface of the membrane. The membrane may comprise compounds selected from the group consisting of thermoplastics and thermosets. The printed and textured designs may be of a laid roof or siding. The invention includes a method of installing a single ply building membrane on a building surface and a method of manufacturing such membrane.

Abstract: Roofing membranes of single ply heat seamable thermoplastic polyolefin (TPO) sheets are made with a metallocene-catalyzed polyethylene (MPO) blend. The membranes exhibit superior heat seam peel strengths and low temperature flexibility.

Abstract: A single ply reinforced roofing membrane having advantageous tensile and seam strength comprising a reinforcement scrim sandwiched between polyolefin cap and base layers, characterized in that at least one of said layers includes a functional polyolefin as additive therein.

Abstract: A single ply reinforced roofing membrane having advantageous tensile and seam strength comprising a reinforcement scrim sandwiched between polyolefin cap and base layers, characterized in that at least one of said layers includes a functional polyolefin as additive therein.