System, method and apparatus for increasing average reflectance of a roofing product for sloped roof
AssigneeCertainTeed Corporation
InventorsHusnu M. Kalkanoglu, Gregory F. Jacobs, Richard A. Snyder
Life of this patent
Estimating the term…
Abstract
A roofing product includes coating a substrate with bitumen to yield a bitumen coated substrate having an exposure zone. First granules are adhered to the exposure zone to yield a first granule coating. The first granules have a solar reflectance greater than 35. An adhesive is adhered to at least a portion of the first granule coating. An open portion of the first granule coating that is free of the adhesive is maintained. An overlay of non-white second granules is adhered to the adhesive, such that the overlay of second granules and the adhesive provide a raised structure above a plane of the first granule coating.
Claims24
A roofing product, comprising:
- a substrate having an exposure zone and a headlap zone;
- a bitumen layer on the substrate;
- first granules on the bitumen layer in the exposure zone, the first granules having a solar reflectance greater than 35;
- an adhesive on only some portions on tops of the first granules, such that the first granules have an open portion that is free of the adhesive;
- and
- an overlay of second granules that are non-white in color on the adhesive, such that the overlay of second granules and the adhesive form raised structures that are distributed substantially across the exposure zone above a plane of the first granules.
A roofing product, comprising:
- a sheet having an exposure portion and a non-exposure portion;
- a coating of an adhesive on the sheet, the adhesive coated sheet having a front surface and a rear surface;
- a front layer of first granules adhered to the front surface of the exposure portion of the sheet comprising a first granule coated front surface, and the first granules have a solar reflectance greater than 50;
- an overlay adhesive coating adhered to at least a first zone on top of the first granule coated front surface of the exposure portion;
- a second zone of the first granule coated front surface of the exposure portion that is free of the overlay adhesive coating;
- and
- an overlay layer of second granules adhered to the first zone of the overlay adhesive coating such that the overlay layer of the second granules and the overlay adhesive coating comprise a raised structure above a plane of the exposure portion, and the second granules have a non-white color.
Dependencies are inferred from the claim text.