Abstract: A single ply membrane roofing system includes a roofing insulation board which, preferably, is at least 45% by dry weight expanded perlite. One major surface of the insulation board is coated with a latex coating comprising, by dry weight, between 48.3% and 96% clay; between 3.1% and 33.3% latex; and between 0% and 34% sodium silicate. A single ply roofing membrane is adhered to the coated major surface of the insulation board with a roofing contact adhesive.
Type:
Grant
Filed:
September 20, 2000
Date of Patent:
June 4, 2002
Assignee:
Johns Manville International., Inc.
Inventors:
Christopher Paul Sandoval, Mary Margaret Georgene Bauer, Craig Donald DePorter, Mauro Vittorio Battaglioli
Abstract: A method of vacuum forming of aqueous, fibrous slurries and products produced thereby are disclosed. The method entails forming an aqueous slurry of ceramic fiber, cationic starch and silica sol. The silica has, based on total weight of the sol, about 50% silica having a particle size range of from about 7 nm to about 200 nm and a specific surface area of about 100 m2/gm to about 10 m2/gm. The slurry is passed through a porous screen under a vacuum pressure deposit the solids content onto the screen to produce high strength products.
Abstract: A single ply membrane roofing system includes a roofing insulation board which, preferably, is at least 45% by dry weight expanded perlite. One major surface of the insulation board is coated with a latex coating comprising, by dry weight, between 48.3% and 96% clay; between 3.1% and 33.3% latex; and between 0% and 34% sodium silicate. A single ply roofing membrane is adhered to the coated major surface of the insulation board with a roofing contact adhesive.
Type:
Grant
Filed:
February 14, 2000
Date of Patent:
January 23, 2001
Inventors:
Christopher Paul Sandoval, Mary Margaret Georgene Bauer, Craig Donald DePorter, Mauro Vittorio Battaglioli