Roofing underlayment

Details Roofing underlayment Roofing underlayment

E - Fixed Constructions

04

D

E04D 12/00 (2006.01) B32B 5/24 (2006.01) B32B 11/10 (2006.01) E04D 5/10 (2006.01) E04D 11/02 (2006.01)

Patent

CA 2714597

A roofing underlayment that includes at least two layers that form a weather resistant barrier between the plywood sheeting and the top roofing layer. The roofing underlayment is fastened to the plywood sheeting and is covered with a roofing material such as shingles. The roofing underlayment is synthetic and includes a polymer is that is extruded or laminated to a woven or non-woven substrate. The use of an extruded polymer provides water proofing, strength, and energy efficiency. The roofing underlayment is embossed by use of an embossment process to allow for trapped water vapor escape and to enhance traction of the roofing surface.

L'invention concerne une sous-couche de toiture qui comprend au moins deux couches qui forment une barrière résistant au climat entre le panneau de contreplaqué et la couche de toiture supérieure. La sous-couche de toiture est fixée sur le panneau de contreplaqué et est recouverte d'un matériau de toiture tel que des bardeaux. La sous-couche de toiture est synthétique et comprend un polymère qui est extrudé ou stratifié sur un substrat tissé ou non tissé. L'utilisation d'un polymère extrudé assure l'imperméabilisation, la résistance et l'efficacité énergétique. La sous-couche de toiture est gaufrée par utilisation d'un processus de gaufrage pour permettre à la vapeur d'eau piégée de s'échapper et pour renforcer la traction de la surface de toiture.

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