Cap sheet, roofing installation, and method

Details Cap sheet, roofing installation, and method Cap sheet, roofing installation, and method

2006-12-12

2006-12-12

Cranmer, Laurie K. (Department: 3636)

Static structures (e.g., buildings)

Lapped multiplanar surfacing; e.g., shingle type

C052S409000, C052S748100, C052S746110, C052S408000

Reexamination Certificate

active

07146771

ABSTRACT:
A cap sheet for cold-applied adhesive roof installations includes a reinforcement mat saturated with and encapsulated within SBS modified bitumen. Bitumen layers above and beneath the mat have top and bottom major surfaces. The top surface of the top bituminous layer has a first edge portion extending inward from and along a first lateral edge. The bottom surface of the bottom bituminous layer has a second edge portion extending inward from and along a second lateral edge. The bitumen in the edge portions is a pressure-sensitive adhesive that is covered by release liners for protection prior to installation. When the cap sheets are installed, the release liners are removed from the edge portions and overlapping edge portions of the cap sheets are pressed and adhesively bonded together to immediately form effective watertight, weather-secure seams.

REFERENCES:
patent: 4091135 (1978-05-01), Tajima et al.
patent: 5766729 (1998-06-01), Zanchetta
patent: 5843522 (1998-12-01), Zanchetta
patent: 6134856 (2000-10-01), Khan et al.
patent: 6145580 (2000-11-01), Lamberti et al.
patent: 6360506 (2002-03-01), Graae
patent: 6378259 (2002-04-01), Carlson
patent: 6696125 (2004-02-01), Zanchetta et al.

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