Single ply roofing base sheet adherence method

Details Single ply roofing base sheet adherence method Single ply roofing base sheet adherence method

1984-10-26

1986-05-13

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

52746, 156 82, 156252, 1563096, 1563099, 156313, 1563244, 156337, E04B 200

Patent

active

045884587

ABSTRACT:
An improved method of adhering a waterproofing membrane to an underlayment and substrate is disclosed. A perforated underlayment comprising a tough, fibrous reinforcing base layer or matting impregnated with a bitumen/polymer mixture substantially similar to the bitumen/polymer mixture of the waterproofing membrane is placed on a substrate. The exposed underside of the waterproofing membrane is heated until it reaches a softening point. Thereafter, the membrane is unrolled onto the underlayment whereby the membrane and the underlayment are bonded essentially into a single ply. Additionally, when the membrane is unrolled, the bitumen/polymer mixture is sufficiently molten to flow and pass through the openings of the perforations thereby bonding the final waterproofing membrane to the substrate.

REFERENCES:
patent: 1609938 (1926-12-01), Forrest
patent: 1943757 (1934-01-01), DeLaney
patent: 1968246 (1934-07-01), Coleman
patent: 4274901 (1981-06-01), Elber
patent: 4288962 (1981-09-01), Kavanaugh

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