Fire resistant non-breathable roofing underlayment
US11597185B2 · kind B2 · utility
0Cited by
0References
12Claims
0Family size
Inventors
Key dates
| Filing date | May 10, 2019 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | May 10, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2419/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layered fire-resistant roofing underlayment is disclosed. The roofing underlayment has a core of aluminum foil. On each side of the aluminum foil is a layer of nonwoven material. A lamination coating is between the aluminum foil layer and the layers of nonwoven material. At the bottom of the roofing underlayment is a backside coating layer. The roofing underlayment may be utilized in bats or rolls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.