Fire-rated roofing system
AssigneeCarlisle Intangible Company
InventorsMatthew John Leatherman, Brian Gish
Life of this patent
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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.
Claims20
A fire-resistant composite comprising:
- a first layer comprising a flexible polymeric sheet comprising an upper ply and a lower ply, the first layer further comprising a reinforcing material wherein the reinforcing material is located between the upper ply and the lower ply;
- and
- a second layer, the second layer comprising at least one carbon fiber sheet and at least one of an inert fiber mat or a metal foil, the metal foil having a melting temperature above about 660° C.
A fire-resistant composite comprising:
- a first layer comprising a flexible polymeric sheet and a reinforcing material, wherein the reinforcing material is a mesh;
- and
- a second layer, the second layer comprising at least one carbon fiber sheet and at least one of an inert fiber mat or a metal foil, the metal foil having a melting temperature above about 660° C.
A fire-resistant composite comprising:
- a first layer comprising a flexible polymeric sheet, the first layer comprising a reinforcing material;
- a second layer comprising first and second carbon fiber sheets with a metal foil or an inert fiber mat positioned between the first and second carbon fiber sheets, the metal foil having a melting temperature above about 660° C.;
- and
- wherein the composite passes ASTM E 108 and is configured to be installed on a roof exterior.
Dependencies are inferred from the claim text.