Roofing shingle with headlap seal and improved coverage

E - Fixed Constructions – 04 – D

Patent

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Details

E04D 1/26 (2006.01) E04D 1/34 (2006.01)

Patent

CA 2448498

A roofing shingle for enhanced wind/rain durability embodies two transverse lines of adhesion. A first discontinuous line of adhesive joins the butt edge of an overlying shingle to the underlying shingle. Secondly, a band of sealant adjacent the top edge of an underlying shingle seals against an overlying shingle to prevent penetration by wind driven rain to the roof deck. A reduced headlap is thereby permitted, thereby either reducing shingle size or extending shingle coverage. Exposed portions of the sealant band improve the erosion resistance of underlying shingles.

Bardeau de toiture à grande résistance au vent et à la pluie, qui comprend deux bandes adhésives transversales. Une première bande adhésive discontinue rattache le bord inférieur d'un bardeau recouvrant au bardeau sous-jacent. D'autre part, une bande d'étanchéité adjacente au bord supérieur d'un bardeau sous-jacent forme un joint avec le bardeau recouvrant pour empêcher que la pluie, poussée par le vent, ne pénètre jusqu'au tablier du toit. Le chevauchement est ainsi réduit, permettant en retour de réduire la taille des bardeaux ou d'accroître la surface couverte par un bardeau. Les parties exposées de la bande d'étanchéité accroissent la résistance à l'érosion des bardeaux sous-jacents.

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