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 2457378

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 présentant plusieurs rangs de bardeaux de toiture et un matériau d'interpli, qui comprend au moins un rang de matériau d'interpli recouvrant au moins dix pour cent environ d'un premier rang de bardeaux et un second rang de bardeaux recouvrant au moins une partie du matériau d'interpli et le premier rang de bardeaux. Environ plus de 40 % du premier rang de bardeaux est exposé après installation. Ce système de toiture présente un degré de résistance au feu de classe A. L'invention concerne également les bardeaux de toiture présentant une utilité particulière dans le système de toiture de l'invention. Dans des modes de réalisation préférés, les bardeaux présentent une largeur d'exposition d'au moins environ 60 % du bardeau, de préférence d'au moins environ 64 % de la largeur du bardeau.

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