Roofing cover board, roofing panel composites, and method
US8105685B2 · kind B2 · utility
10Cited by
17References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2010 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Feb 10, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249989
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A roofing system includes a layer of insulation boards overlying a roof deck, and a layer of cover boards overlying the insulation boards. The insulation boards include a polyisocyanurate or polyurethane foam material that has a first density. The cover boards include a polyisocyanurate or polyurethane material that has a second density. The second density is greater than the first. The roofing system may also include a waterproofing membrane overlying the cover boards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.