Roofing material having improved impact resistance

E - Fixed Constructions – 04 – D

Patent

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E04D 1/26 (2006.01) E04D 5/10 (2006.01)

Patent

CA 2353975

An asphalt-based roofing material (28) includes a substrate (12) coated with an asphalt coating (48). The asphalt coating (48) includes a lower region (54) that is positioned below the substrate (12) when the roofing material (28) is installed on a roof. A web (26) is fused to the lower region (54) of the asphalt coating (48). A portion of the web (26) and of the asphalt coating (48) have been intermingled by melting, thereby fusing the web (26) and the asphalt coating (48). A method of manufacturing the asphalt-based roofing material (28) includes the steps of coating a substrate (12) with an asphalt coating (48), applying a web (26) to the lower region (54) of the asphalt coating (48), and intermingling a portion of the web (26) and of the asphalt (48) coating by melting, thereby fusing the web (26) to the lower region (54) of the asphalt coating (48).

La présente invention concerne un matériau de toiture à base d'asphalte (28) comprenant un substrat (12) recouvert d'un enrobage bitumeux (48). Cet enrobage bitumeux (48) comprend une zone inférieure (54) placée sous le substrat (12) lorsque le matériau pour toiture (28) est posé sur un toit. Une âme(26) est appliquée par fusion sur la partie inférieure (54) de l'enrobage bitumeux.(48). Une partie de l'âme (26) et de l'enrobage bitumeux (48) est mélangée par fusion, de manière à lier l'âme (26) à l'enrobage bitumeux (48) par fusion. En outre, cette invention concerne un procédé de fabrication du matériau pour toiture à base d'asphalte (28), consistant d'abord à recouvrir un substrat (12) avec un enrobage bitumeux (48), à appliquer ensuite une âme (26) sur la zone inférieure (54) de l'enrobage bitumeux (48), puis à mélanger par fusion une partie de l'âme (26) et de l'enrobage bitumeux (48), de manière à lier l'âme (26) à la zone inférieure de l'enrobage bitumeux (48) par fusion.

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