Patent ID: 11933051
Assignee: CERTAINTEED LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 16:
17. A method of constructing a roofing system, the method comprising:
positioning a first roofing panel on a roof frame, the first roofing panel including a roofing structure comprising:
a decking layer providing a structural support for the roofing structure,
a base layer disposed over the decking layer, the base layer including a plurality of strips including a first base layer strip adjacent to a second base layer strip so as to form a first base layer seam between the first base layer strip and the second base layer strip,
a cap layer disposed over the base layer, the cap layer including a plurality of strips including a first cap layer strip adjacent to a second cap layer strip so as to form a first cap layer seam between the first cap layer strip and the second cap layer strip, wherein the first cap layer seam is spaced from the first base layer seam along the surface of the roofing structure, and
a plurality of rails disposed over the cap layer and spaced apart across the surface of the roofing structure, the plurality of rails including a first rail aligned with the first base layer seam and a second rail aligned with the first cap layer seam; and

positioning a second roofing panel on the roof frame adjacent to the first roofing panel so as to form a panel seam between the first roofing panel and the second roofing panel.