Metal roofing system
US11987985B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2022 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Jan 26, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D1/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A metal roofing system contains, in order a roof deck, a fire resistant (FR) fleece, and a metal sheeting system. The second side of the FR fleece faces the roof deck. The FR fleece contains a plurality of FR staple fibers and a plurality of first char scaffold fibers. The FR fleece has a fleece thickness defined as the distance between the first side and the second side. The metal sheeting system contains a plurality of metal sheets having an upper and lower side, where the lower side of the metal sheeting system faces the first side of the FR fleece. The metal sheets have an average metal sheet thickness defined as the distance between the upper and lower sides, where the thickness of the FR fleece is at least about 3 times the average metal sheet thickness. The FR fleece has a density of less 0.5 g/cm3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.