Owens Corning
Shingle with reinforced nail zone and method of manufacturing

Abstract:

A roofing shingle includes an overlay sheet having a first granular material secured to a headlap portion of the overlay sheet, an underlay sheet, and a reinforcement material secured directly to an asphalt coating of the headlap portion of the overlay sheet without extending into a tab portion. The reinforcement material extends beyond overlapping regions of the headlap portion and the underlay sheet such that a portion of a reinforced nail zone is disposed on a single-layer portion of the shingle. A second granular material is secured to the headlap portion of the overlay sheet along the longitudinal axis of the reinforced nail zone, with the second granular material providing a thinner cross-section than the first granular material to define a depressed surface extending along said longitudinal axis of the shingle.