Method of forming a roof seal

Details Method of forming a roof seal Method of forming a roof seal

1991-02-01

1992-11-24

Scherbel, David A.

Static structures (e.g., buildings)

Processes

Adhering preformed sheet-form member

52408, 52410, 156 71, B04B 500

Patent

active

051652102

ABSTRACT:
A method for forming a temporary seal between a roof substrate and a flexible membrane is disclosed. At the end of a work day, the roofing membrane is folded upon itself along a foldline to define a leading edge of the membrane. An expandable polyurethane foam is injected into the interface formed between the membrane leading edge and the roof substrate. The foam is allowed to expand into a wedge shape and adhere to the membrane leading edge and roof substrate. After it cures, the foam wedge is substantially impervious to water and moisture migration. When work is resumed, the membrane is peeled away from the formed wedge, preferably at an angle, and the existing roof substrate is removed.

REFERENCES:
patent: 3094447 (1963-06-01), Chamberlain
patent: 3646715 (1972-03-01), Pope
patent: 3694306 (1972-09-01), Fricklas
patent: 3763605 (1973-10-01), Freeman
patent: 4190989 (1980-03-01), Sakharoff
patent: 4509999 (1985-04-01), Sandor
patent: 4707961 (1987-11-01), Nunley et al.
Handi-Foam II Night Guard Brochure, published Feb. 1988 by Universal Foam Systems, Inc., Cudahy, Wis.

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