Roofing shingles with reduced usage of conventional shingle material having side lap extension
US8925272B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2012 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Nov 2, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D1/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roofing shingle includes a shingle body having a buttlap portion with a butt edge and a headlap portion with a head edge. The shingle body also has a first side edge, a second side edge, and an exposure zone extending from the butt edge toward the headlap portion that is configured to be exposed to the environment when the shingle is installed on a roof. A water impermeable sheet is attached to the shingle body. The sheet has a width, length, first end and second end. The width extends from approximately the head edge to approximately the butt edge of the shingle body. The length extends from the first end to the second end. At least a portion of the length extends beyond the first side edge of the shingle body by at least about 2 inches. The sheet is formed from a different material than the shingle body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.