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US 2019/0100921 A1Published application
Highly reflective roofing system
AssigneeU.S. Silica Company
InventorsEric L. Sexauer, Matthew W. Kolb
Life of this patent
Estimating the term…
Abstract
A cool roofing system includes highly reflective calcined kaolin particles having a solar reflectance of 80% to 92%. When applied to a roofing substrate, the highly reflective kaolin particles produce a roofing system having a solar reflectance greater than or equal to 70%.
Claims17
1-20. (canceled)
A cool roofing system comprising:
- at least one asphalt layer;
- and
- at least one granular layer adhered to or embedded in an exposed surface of the at least one asphalt layer, the at least one granular layer being a top-most layer of the cool roofing system and comprising a plurality of kaolin particles having a surface treatment, the kaolin particles having a solar reflectance prior to the surface treatment of about 80% to about 92%, the cool roofing system having a minimum solar reflectance of 70% or greater, and the surface treatment consisting of a clear coating selected from the group consisting of silanes, siloxanes, polysiloxanes, organo-siloxanes, silicates, organic silicates, silicone resins, acrylics, urethanes, polyurethanes, glycol ethers and mixtures thereof.
A cool roofing system comprising:
- a roofing substrate;
- at least one layer of spray polyurethane foam on the roofing substrate;
- an elastomeric coating layer adhered to the spray polyurethane foam layer;
- and
- a granular layer adhered to or embedded in an exposed surface of the elastomeric coating layer, the granular layer being a top-most layer of the cool roofing system and comprising a plurality of kaolin particles having a surface treatment, the kaolin particles having a solar reflectance prior to the surface treatment of about 80% to about 92%, the cool roofing system having a minimum solar reflectance of at least 70%, and the surface treatment consisting of a clear coating selected from the group consisting of silanes, siloxanes, polysiloxanes, organo-siloxanes, silicates, organic silicates, silicone resins, acrylics, urethanes, polyurethanes, glycol ethers and mixtures thereof.
2 more elements
Dependencies are inferred from the claim text.