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US 10,724,245 B2Granted
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%.
Claims10
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 calcined kaolin particles, the cool roofing system having a minimum solar reflectance of 70% or greater, wherein the calcined particles have a solar reflectance of about 80% to 92%, and wherein the calcined particles do not have a surface treatment.
1 more element
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 calcined kaolin particles, the cool roofing system having a minimum solar reflectance of at least 70%, wherein the calcined kaolin particles do not have a surface treatment.
1 more element
Dependencies are inferred from the claim text.