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US 10,941,272 B2Granted
Liquid coatings including expandable graphite
AssigneeFirestone Building Products Company, LLC
InventorsWensheng Zhou, Michael J. Hubbard
Life of this patent
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Abstract
A method of preparing a seamless membrane over a flat or low-sloped roof, the method comprising applying multiple layers of a liquid coating composition over a roof surface, where said step of applying includes applying at least one layer of a liquid coating composition that includes expandable graphite.
Claims8
A multi-layered seamless roof comprising:
- (i) a roof deck;
- (ii) optionally one or more of an insulation board, a cover board, and a membrane forming an optional first surface over the roof deck;
- (iii) a seamless polymeric layer covering said roof deck or said optional first surface, and a second seamless polymeric layer disposed on said first seamless polymeric layer, where at least one seamless polymeric layer of the multi-layered seamless roof includes expandable graphite, where said at least one seamless polymeric layer including expandable graphite includes a polymeric monolithic matrix with the expandable graphite in contact with the matrix and dispersed throughout said at least one seamless polymeric layer, and where said seamless polymeric layer disposed on said roof deck or said optional first surface is fully adhered thereto.
Dependencies are inferred from the claim text.