Waterproofing membrane for use on inclined surfaces

A waterproofing roofing membrane fabricated from one or more layers of polypropylene and having a top surface and a bottom surface, and wherein a plurality of raised, discontinuous polymer elements are deposited in a skid resistant pattern on and mechanically affixed into a breathable non-woven fibrous polyester carrier sheet which is attached to the top surface of the membrane, wherein said polymer elements are made from a polymer material containing plasticized polyvinyl chloride, wherein the height of the polymer elements is 0.02 mm and have a density of 800 per 100 cm2, wherein said polymer elements have a Tensile Modulus of <15 MPa (ASTM D638, 23C, 50 mm/min), a Tensile Yield Elongation of >50% (ASTM D638, 23C, 50 mm/min), and a Shore A Hardness of <90 (ASTM D2240, 23C, 0 sec).

A method of depositing and affixing a plurality of discontinuous raised polymer elements made from a polymer material containing plasticized polyvinyl chloride to a waterproofing roofing membrane fabricated from one or more layers of flexible sheet material wherein the height of the polymer elements is between 0.02 mm to 1.0 mm and said membrane has a breathable, woven or non-woven fibrous top surface, wherein an ambient temperature liquid and solid polymer formulation containing polyvinyl chloride, is deposited at ambient temperature as an unsolidified liquid pattern in a skid resistant pattern on the woven or non-woven top surface of said waterproofing membrane and allowed to flow down and into and around individual fibers, then the unsolidified liquid pattern on the waterproofing membrane is cured at an elevated temperature to mechanically affix said polymer elements into and around said individual fibers below the top surface of the membrane, wherein said polymer elements have a Tensile Modulus of <15 MPa (ASTM D638, 23C, 50 mm/min), a Tensile Yield Elongation of >50% (ASTM D638, 23C, 50 mm/min), and a Shore A Hardness of <90 (ASTM D2240, 23C, 0 sec).

A method of depositing on and mechanically affixing a plurality of raised, discontinuous polymer elements having a height of between 0.02 mm to 1.0 mm and in the form of an ambient temperature, liquid and solid polymer formulation containing plasticized polyvinyl chloride to a waterproofing roofing membrane fabricated from one or more layers of flexible sheet material, wherein the polymer elements are first deposited on as an unsolidified liquid pattern in a skid resistant pattern to a carrier sheet of breathable, woven tape or non woven fibrous polypropylene (PP) or polyethylene terephthalate (PET), then the unsolidified liquid pattern on the carrier sheet is cured at an elevated temperature to mechanically affix said polymer elements into and around the fibers of the carrier sheet and then the carrier sheet is attached to the waterproofing membrane top layer of the one or more layers of flexible sheet material selected from one or more of the group consisting of synthetic polymers of polyethylene, polypropylene, polyethyleneterephthalate and nylon, or blends and copolymers thereof;

• metal, woven or non woven glass, and bituminous materials, wherein said polymer elements have a Tensile Modulus of <15 MPa (ASTM D638, 23C, 50 mm/min), a Tensile Yield Elongation of >50% (ASTM D638, 23C, 50 mm/min), and a Shore A Hardness of <90 (ASTM D2240, 23C, 0 sec).

A waterproofing roofing membrane fabricated from one or more layers of flexible sheet material and said membrane having a breathable, woven or non-woven fibrous top surface and a bottom surface and a plurality of spaced-apart, discontinuous, raised polymer elements made from plasticized polyvinyl chloride deposited in a skid resistant pattern on and mechanically affixed into and around said fibers of the woven or non-woven top surface of the membrane wherein the pattern of polymer elements is comprised of distinct polymer regions having a density range of between 25 per 100 cm2 to 2500 cm2, wherein said polymer elements have a Tensile Modulus of <15 MPa (ASTM D638, 23C, 50 mm/min), a Tensile Yield Elongation of >50% (ASTM D638, 23C, 50 mm/min), and a Shore A Hardness of <90 (ASTM D2240, 23C, 0 sec).

A waterproofing roofing membrane, said membrane fabricated from one or more layers of flexible sheet material and said membrane having a breathable, woven or non-woven fibrous top surface and a bottom surface and a plurality of spaced-apart, discontinuous, raised polymer elements made from plasticized polyvinyl chloride deposited in a skid resistant pattern on and mechanically affixed into and around said fibers of the woven or non-woven top surface of the membrane wherein the height of the raised polymer elements is at least 0.02 mm, wherein said polymer elements have a Tensile Modulus of <15 MPa (ASTM D638, 23C, 50 mm/min), a Tensile Yield Elongation of >50% (ASTM D638, 23C, 50 mm/min, and a Shore A Hardness of <90 (ASTM D2240, 23C, 0 sec).

A waterproofing roofing membrane, said membrane fabricated from one or more layers of flexible sheet material including a carrier sheet comprising a breathable, woven or non-woven fibrous material having a top surface and a bottom surface and a plurality of spaced-apart, discontinuous, raised polymer elements made from a plasticized polyvinyl chloride comprising 100 parts PVC resin and 100 parts DINP plasticizer deposited in liquid form in a skid resistant pattern into said carrier sheet with said polyvinyl chloride thereafter curing around individual fibers thereof and thereby becoming mechanically affixed into said carrier sheet, wherein the height of the raised polymer elements are between about 0.02 mm and 1.0 mm and the spacing of the raised polymer elements is between about 25 per 100 cm2 to 2500 cm2.

A waterproofing roofing membrane, said membrane fabricated from one or more layers of flexible sheet material including a carrier sheet comprising a breathable, woven or non-woven fibrous material having a top surface and a bottom surface and a plurality of spaced-apart, discontinuous, raised polymer elements made from a plasticized polyvinyl chloride comprising PVC resin and plasticizer mixed to uniformity and deposited in liquid form in a skid resistant pattern into said carrier sheet with said polyvinyl chloride thereafter curing around individual fibers thereof and thereby becoming mechanically affixed into said carrier sheet, wherein the cured polymer elements have a tensile modulus of about 10 MPa, a tensile yield strength of about 8 MPa, a tensile yield elongation of about 125% and a Shore A Hardness of about A60.

A waterproofing roofing membrane, said membrane fabricated from one or more layers of flexible sheet material including a carrier sheet comprising a breathable, woven or non-woven fibrous material having a top surface and a bottom surface and a plurality of spaced-apart, discontinuous, raised polymer elements made from a plasticized polyvinyl chloride comprising about 100 parts PVC resin and between about 40 parts and 100 parts plasticizer mixed and deposited in liquid form in a skid resistant pattern into said carrier sheet with said polyvinyl chloride thereafter curing around individual fibers thereof and thereby becoming mechanically affixed into said carrier sheet.