Roofing shingles with reduced usage of conventional shingle material and having a combination vertical and lateral lap extension
US8898963B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2012 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Nov 2, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D1/2918
- 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, a first side edge and a second side edge. An exposure zone extends from the butt edge toward the headlap portion and 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 and has a width, length, first end and second end. The width extends from between about the butt and head edges to beyond the head edge of the shingle body. The length extends from between about the first and second side edges to beyond the first side edge. The sheet is formed from a different material than the shingle body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.