Roofing system and roofing shingles

E - Fixed Constructions – 04 – D

Patent

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Details

E04D 1/26 (2006.01) E04D 1/36 (2006.01) E04D 5/12 (2006.01) E04D 12/00 (2006.01)

Patent

CA 2603013

A roofing system having a multiplicity of courses of roofing shingles and interply material comprising at least one course of interply material overlapping at least about ten percent of a first course of shingles and a second course of shingles overlapping at least a portion of the interply material and the first course of shingles. More than about 40% of the first course of shingles is exposed after installation. The roofing system has a class A fire resistant rating. Roofing shingles having particular utility in the roofing system of the present invention are also disclosed. In preferred embodiments the shingles have an exposure width of at least about 60% of the shingle, more preferably at least about 64% of the width of the shingle.

L'invention concerne un système de toiture ayant de multiples rangs de bardeaux de toiture et un matériau de sous-couche; le système comprend au moins un rang de matériau de sous-couche chevauchant au moins 10 % environ d'un premier rang de bardeaux et un deuxième rang de bardeaux chevauchant au moins une partie du matériau de sous-couche et du premier rang de bardeaux. Plus d'environ 40 % du premier rang de bardeaux est exposé après l'installation. Le système de couverture a un degré de résistance au feu de catégorie A. La présente invention a également pour objet les bardeaux de toiture ayant une utilité particulière dans le système de couverture. Dans les variantes privilégiées, les bardeaux ont une largeur d'exposition d'au moins 60 % environ du bardeau, plus préférentiellement d'au moins 64 % envirion de la largeur du bardeau.

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