Perforated roofing material and a method of manufacturing...

Details Perforated roofing material and a method of manufacturing... Perforated roofing material and a method of manufacturing...

E - Fixed Constructions

04

D

20/50

E04D 5/12 (2006.01) B32B 31/14 (1990.01)

Patent

CA 1279974

Title: A perforated roofing material and a method of manufacturing the same. Abstract A perforated web-like bituminous roofing material comprising a perforated, bituminized carrier, at the side facing, in the condition of use, the roof area to be coated, is provided with a metal foil leaving clear the perforations in the bituminized carrier. The roofing material can be manufactured by finishing one side of a perforated bituminized carrier with fine sprinkling material and coating the other side with an imperforate metal foil, and subsequently removing the metal foil at the perforations.

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