Patent ID: 6408593
Filing Date: 2002-06-25
Classification: E04D

Abstract:
A method of roofing a structure, the method comprising the steps of:providing a shingle for the roof of the structure, the shingle composition comprising: (a) a styrene-butadiene copolymer rubber component present in the range from about 5-95% by weight, based on the total weight of the composition; (b) an ethylenic polyolefin component selected from the group consisting of polyethylene, ethylene acrylic acid copolymers, ethylene acrylate copolymers and ethylene vinyl acetate copolymers, the ethylenic polyolefin component being present in the range from about 5-50% by weight, based on the total weight of the composition; wherein the shingle composition is further characterized as having a weight of less than 150 pounds per roofing square for &frac18; inch thickness, which meets the flame retardancy requirements of FMVSS-302 at thicknesses of &frac18; inch thickness and higher without the addition of separate flame retardant components ,and wherein the shingle composition is further characterized by the absence of an asphaltine constituent ;and installing the shingle on the roof of the structure.