Bituminous roof covering material

Details Bituminous roof covering material Bituminous roof covering material

1989-05-30

1991-03-19

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428192, 428468, 428489, B32B 310, B32B 1508

Patent

active

050009990

ABSTRACT:
A bituminous roof covering material, particularly suitable for use as first layer in a multilayer roof covering system which is applied while adding heat. The material comprises a carrier provided on both sides with a bituminous layer and with a layer formed by a perforated metal foil. According to the invention, the carrier and the bituminous layers applied thereto on both sides are closed layers without perforations, and the bituminous layer interposed between the perforated layer and the carrier consists of adhesion-active bituminous material.

REFERENCES:
patent: 3922417 (1975-11-01), Reintjes et al.
patent: 4287248 (1981-09-01), Gessner et al.
patent: 4343847 (1982-08-01), Meynard
patent: 4819848 (1989-04-01), Hollander
patent: 4874652 (1989-10-01), Hollander

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