Roof Shingle With Solar Reflectance

Solar radiation heats the roof surface.

Roof shingle with solar reflectance.

Feature gaf proprietary color blends and enhanced shadow effect for a genuine wood shake look. Explore our expanded cool roof collection and reflect your unique style. The solar reflective shingles with 20 or less solar reflectivity that ross saw are landmark and landmark pro solaris shingles. The attic under the roof.

The cool roof rating council was created in 1998 to develop accurate and credible methods for evaluating and labeling the solar reflectance and thermal emittance radiative properties of roofing products and to disseminate the information to all interested parties. The highly solar reflective shingles with up to 40 solar reflectivity are landmark solaris platinum shingles. Cambridge tm cool colors reflect a percentage of solar radiation. Every shingle in the cool roof collection features a precise mix of solar reflecting granules to help comply with the solar reflectance index sri requirements of title 24 part 6 even with deeper vibrant colors.

How they can be made cool. Some heat that was absorbed by roof is transferred into the building. Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer. Shingle roofs consist of overlapping panels made from a variety of materials such as fiberglass asphalt wood polymers or metals.

It also must meet the specific solar reflectance thermal emittance and or solar reflectance index values defined by the specific energy code. Sri measures the roof s ability to reject solar heat defined such that a standard black reflectance 0 05 emittance 0 90 is 0 and a standard white reflectance 0 80 emittance 0 90 is 100. Solar reflective shingles are designed specifically to reduce the absorption of the suns infrared radiation by reflecting ir rays off the surface of the roof thus not allowing the heat to be transferred to the interior of the structure i e. Relative ability of roof surface to emit release absorbed.

Solar reflectance index sri. Meet the prescriptive solar reflectance and thermal emittance requirements according to the 2016 title 24 standards are rated by the cool roof rating council and meet the cool roof requirements of the los angeles green building code find out more about title 24 here. For an asphalt roofing shingle to be classified as a cool under the energy codes it needs to have a cool roof rating council crrc rating for thermal emittance and solar reflectance. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.

Coating existing asphalt shingles to make them cool however is not normally recommended or approved by shingle manufacturers. Buy cool asphalt shingles which use specially coated granules that provide better solar reflectance.