Fire resistant roofing products
AssigneeCertainTeed Corporation
InventorsHusnu M. Kalkanoglu, Barbara A. McDonough
Life of this patent
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Abstract
A fire resistant roofing material includes a core sheet and a sheet of conductive material having a thermal conductivity greater than about 25 W/m-K. The sheet of conductive material is coextensively bonded with the core sheet, and coated with a polymer-modified bituminous material having fire-resistant properties.
Claims14
A roof covering comprising a fire resistant roofing material, the fire resistant roofing material comprising a plurality of layers, wherein the plurality of layers comprises:
- a core sheet having a top surface and bottom surface;
- and
- a sheet of conductive material having a thermal conductivity greater than about 25 W/m-K, the sheet of conductive material having a first and second surface;
- wherein the first surface of the sheet of conductive material is coextensively bonded with said top surface of the core sheet,
- wherein the second surface of the sheet of conductive material is coated with a polymer-modified bituminous material having fire-resistant properties forming a top bituminous layer and the bottom surface of the core sheet is impregnated with a polymer-modified bituminous material forming a bottom bituminous layer, and
- wherein roofing granules are embedded in at least a portion of said top bituminous layer to form a top surface, the top surface providing solar reflectivity.
A roof covering comprising a fire resistant roofing material, the fire resistant roofing material comprising a plurality of layers, wherein the plurality of layers comprises:
- a core sheet having a top surface and bottom surface;
- and
- a sheet of conductive material having a thermal conductivity greater than about 25 W/m-K, the sheet of conductive material having a first and second surface;
- wherein the first surface of the sheet of conductive material is coextensively bonded with said bottom surface of the core sheet, and
- wherein the second surface of the sheet of conductive material is coated with a polymer-modified bituminous material forming a bottom bituminous layer and the top surface of the core sheet is impregnated with a polymer-modified bituminous material having fire-resistant properties forming a top bituminous layer, and
- wherein roofing granules are embedded in at least a portion of said top bituminous layer to form a top surface, the top surface providing solar reflectivity.
Dependencies are inferred from the claim text.