Composite roofing panel

Details Composite roofing panel Composite roofing panel

E - Fixed Constructions

04

C

20/38.1

E04C 2/24 (2006.01) B32B 5/20 (2006.01) E04B 1/80 (2006.01) E04C 2/26 (2006.01) E04D 3/35 (2006.01)

Patent

CA 1182974

COMPOSITE ROOFING PANEL ABSTRACT OF THE DISCLOSURE A composite panel including a fibrous glass board and foamed-in-place plastic foam has a perforated sheet at the foam-fiberglass interface, there being at least two holes per square inch in the perforated sheet, the diameter of the holes being less than 0. 06 of an inch, and the amount of open area represented by the holes being less than 105 percent of the total area of the sheet.

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