Roof Shingle With Solar Reflectance

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.

Roof shingle with solar reflectance.

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 attic under the roof. 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 radiation heats the roof surface.

Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer. Cambridge tm cool colors reflect a percentage of solar radiation. Feature gaf proprietary color blends and enhanced shadow effect for a genuine wood shake look. Some heat that was absorbed by roof is transferred into the building.

Shingle roofs consist of overlapping panels made from a variety of materials such as fiberglass asphalt wood polymers or metals. Explore our expanded cool roof collection and reflect your unique style. Relative ability of roof surface to emit release absorbed. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.

It also must meet the specific solar reflectance thermal emittance and or solar reflectance index values defined by the specific energy code. The sri value reflects how well a roof rejects solar heat. 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. The highly solar reflective shingles with up to 40 solar reflectivity are landmark solaris platinum shingles.

Solar reflectance index sri. These are all manufactured by certainteed. Incorporates both solar reflectance and thermal emissivity in a single value. Buy cool asphalt shingles which use specially coated granules that provide better solar reflectance.

Coating existing asphalt shingles to make them cool however is not normally recommended or approved by shingle manufacturers. How they can be made cool.