When you have a new roof installed on your home it will need to meet California’s building efficiency standards as outlined in Title 26, part 6. A Cool Roof is a highly recommended way to meet this requirement.
Cool Roofs reflect solar energy and discharge stored heat. So they have both high reflectivity and high emissivity. Compared to standard roof surfaces, Cool Roofs stay 50 degrees to 60 degrees cooler on hot summer days and that keeps cooling costs down.