Coated roofing insulation and roofing systems including such insulations
AssigneeJohns Manville International, Inc.
InventorsChristopher Paul Sandoval, Mary Margaret Georgene Bauer, Craig Donald DePorter, Mauro Vittorio Battaglioli
Life of this patent
Estimating the term…
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.
Claims6
A method of making a coated roofing insulation board, comprising:
- mixing together the following ingredients in water to form a slurry:
- expanded perlite about 45% to about 76% by dry weight;
- cellulosic fibers about 15% to about 45% by dry weight;
- latex binder about 0.1% to about 10% by dry weight;
- bituminous material about 2% to about 9% by dry weight;
- and
- alum about 0% to about 3% by dry weight;
- forming the slurry into a wet mat;
- applying a coating comprising, by dry weight about 48.3% to about 96% filler;
- about 3.1% to about 33.3% latex;
- and 0% to about 34% sodium silicate, to a first major surface of the wet mat;
- and
- drying the mat and coating to form a coated insulation board.
A method of making a coated roofing insulation board comprising:
- mixing together the following ingredients in water to form slurry:
- expanded perlite between about 45% and about 76% by dry weight;
- cellulosic fibers between about 15% and about 45% by dry weight;
- starch binder about 0.1% to about 10% by dry weight;
- bituminous material about 2% to about 9% by dry weight;
- and
- alum about 0% to about 3% by dry weight;
- forming the slurry into a wet mat;
- applying a coating comprising, by dry weight, about 48.3% to about 96% filler;
- about 3.1% to about 33.3% latex;
- and 0% to about 34% sodium silicate, to a first major surface of the wet mat;
- and drying the mat and coating to form a coated insulation board.
Dependencies are inferred from the claim text.