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US 7,118,794 B2Granted
Shingle with improved blow-off resistance
AssigneeCertainTeed Corporation
InventorsHusnu M. Kalkanoglu, Robert L. Jenkins, Stephen A. Koch
Life of this patent
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Abstract
A wind-resistant shingle and a method of making it is provided in which the rear surface of the shingle is provided with an attached reinforcement layer, which resists upwardly wind-applied bending torque when the shingle is installed on a roof, such that the failure of the shingle when it is bent beyond its elastic limit, is resisted until the shingle has absorbed a high percentage of applied torque.
Claims12
A wind-resistant shingle having front and rear surfaces, a width defined by upper and lower edges and a length defined by right and left edges, comprising:
- (a) a base layer of mat having front and rear surfaces;
- (b) a coating of asphaltic material on both front and rear surfaces of the mat presenting corresponding front and rear asphaltic material surfaces;
- (c) coatings of granular material on the asphaltic material on both front and rear surfaces of the asphaltic material;
- (d) a longitudinal fastening zone between right and left shingle edges, generally intermediate said upper and lower edges;
- (e) a generally longitudinal wind-resistant layer having front and rear surfaces, with its front surface adhered to said rear surface of said shingle, and extending at least substantially between right and left edges of the shingle;
- (f) said wind-resistant layer extending at least partially lower than the fastening zone, toward the lower edge of the shingle;
- and
- (g) said wind-resistant layer comprising a scrim of crossing strands of reinforcing material with the rear surface of the scrim being uncoated with asphaltic material.
5 more elements
Dependencies are inferred from the claim text.