Patent ID: 9657478
Date: 2017-05-23
CPC Classifications: B32B,B65D,E04D,Y10T

Claim:
1. A roofing shingle comprising: an overlay sheet including a mat and an asphalt coating applied to the mat, and defining an upper headlap portion and a lower tab portion; an underlay sheet including a mat and an asphalt coating applied to the mat, the underlay sheet being secured to the overlay sheet such that a region of the underlay sheet overlaps a region of the headlap portion of the overlay sheet; and a reinforcement material secured directly to the asphalt coating of the headlap portion of the overlay sheet without extending into the tab portion to provide a reinforced nail zone that extends along a longitudinal axis of the shingle, wherein the reinforcement material is configured to improve nail pull-through, with the reinforcement material and the headlap portion providing a nail pull-through value that is greater than an otherwise identical shingle having no such reinforcement material; wherein the shingle further includes a granular material secured to the headlap portion of the overlay sheet, with no granular material adhered to the reinforcement material; and wherein the headlap portion of the overlay sheet includes a depressed surface extending along said longitudinal axis of the shingle.