Fire-rated roofing system
AssigneeCarlisle Intangible Company
InventorsMatthew John Leatherman, Brian Gish
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Abstract
A fire-resistant polymeric membrane includes a polymer layer such as PVC, TPO, or EPDM affixed to a carbon fiber composite. The carbon fiber composite includes one or two layers of non-woven carbon fibers and at least one of an inert fiber mat or a metal foil layer, wherein the metal foil layer has a melting temperature of at least about 660° C. The present invention also provides an underlayment, wherein the underlayment is formed from one or more fibrous carbon layers affixed to at least one of an inert fiber mat or a metal foil having a melting temperature greater than 660° C.
Claims13
A fire-resistant composite comprising:
- a first layer comprising a flexible polyolefin sheet having a thickness of 45-80 mils, the first layer comprising a reinforcing material;
- a second layer comprising first and second carbon fiber sheets with a metal foil positioned between said first and second carbon fiber sheets, the metal foil having a melting temperature above 660° C.;
- and
- wherein said composite passes ASTM E 108 and is configured to be installed on a roof exterior.
Dependencies are inferred from the claim text.