Abstract: The present invention provides a composition ridge or hip covering which creates an appearance similar to that of a wood shake or slate roof. The covering may be easily installed, requires no trimming or folding during installation and may be manufactured with no significant waste of starting material. The covering is accomplished by forming an unfolded sheet of roofing material into a fish-like shape having three distinct portions: a front portion, a body (middle) portion and an end portion. Each portion is tapered and each portion has a specially defined length and taper angle depending upon the shape of the shingle desired. Two thickened multilayers are formed in the body portion by folding the unfolded sheet, one being at the wide end edge of the shingle and the other in the main part of the body portion. The taper angles and lengths of the front portion and end portion are essentially the same.

Abstract: A halogen-free flame-retardant bitumen composition with improved performance characteristics is described. The flame-retardant bitumen composition contains at least 45 weight percent bitumen, about 2 to 25 weight percent thermoplastic polymer, and about 15 to 35 weight percent of a mixture of flame-retardant compounds. The mixture of flame-retardant compounds comprises alumina trihydrate and/or magnesium hydroxide, at least 2 weight percent zinc borate, and, optionally, about 2 to 20 weight percent calcium carbonate of the final flame-retardant bitumen composition.

Abstract: A roofing system incorporates a fire resistant asphalt composition comprising a thermoplastic elastomer modified bitumen, a filler, a brominated diphenyl ether, antimony oxide, and zinc borate. The asphalt composition is utilized with and impregnated into at least one layer of fiberglass or polyester mat. Preferably at least two layers are utilized wherein an upper layer is a fiberglass mat and a lower layer is a polyester mat, both mat layers being impregnated with the composition. In its preferred formulation, the asphalt composition comprises, in weight percent, about 30% to 90% bitumen, about 4% to 16% styrene-butadiene-styrene copolymer, about 10% to 40% filler, and up to about 20% each of the brominated diphenyl ether, the antimony oxide, and the zinc borate. The preferred brominated diphenyl ether is decabromodiphenyl ether.

Abstract: A roofing system incorporates a fire resistant asphalt composition comprising a thermoplastic elastomer modified bitumen, a filler, a brominated diphenyl ether, antimony oxide, and zinc borate. The asphalt composition is utilized with and impregnated into at least one layer of fiberglass or polyester mat. Preferably at least two layers are utilized wherein an upper layer is a fiberglass mat and a lower layer is a polyester mat, both mat layers being impregnated with the composition. In its preferred formulation, the asphalt composition comprises, in weight percent, about 30% to 90% bitumen, about 4% to 16% styrene-butadiene-styrene copolymer, about 10% to 40% filler, and up to about 20% each of the brominated diphenyl ether, the antimony oxide, and the zinc borate. The preferred brominated diphenyl ether is decabromodiphenyl ether.

Abstract: A roofing system incorporates a fire resistant asphalt composition comprising a thermoplastic elastomer modified bitumen, a filler, a brominated diphenyl ether, antimony oxide, and zinc borate. The asphalt composition is utilized with and impregnated into at least one layer of fiberglass or polyester mat. Preferably at least two layers are utilized wherein an upper layer is a fiberglass mat and a lower layer is a polyester mat, both mat layers being impregnated with the composition. In its preferred formulation, the asphalt composition comprises, in weight percent, about 30% to 90% bitumen, about 4% to 16% sytrene-butadiene-styrene copolymer, about 10% to 40% filler, and up to about 20% each of the brominated diphenyl ether, the antimony oxide, and the zinc borate. The preferred brominated diphenyl ether is decabromodiphenyl ether.