By DECRA Metal Roofing.
A cool roof is a roofing product with high solar reflectance and thermal emittance properties. These components on the roof’s surface lower a roof’s temperature and can help lower the overall temperature of a building. While cool roofs are most often found in white, cool roofs do come in a variety of colors including brown, blue, green, orange, grey, tan and even black.
Roofing products must be certified by the Cool Roof Rating Council (CRRC). CRRC was founded in 1994 as a “non-profit educational organization to implement and communicate an accurate radiative energy performance rating system for roof surfaces, support research and serve as an educational resource for information on roofing.”
In addition to CRRC certification, California has Title 24 energy code standards that say to be considered a cool roof, steep-slope products product must meet the following requirements:
Residential (steep-slope) - Minimum 0.20 reflectivity and 0.75 emissivity or a minimum 16 SRI (Solar Reflective Index)
Non-residential (steep-slope) - Has the same minimum values as the RESIDENTIAL steep-slope numbers for reflectivity and emissivity; or SRI value but doesn’t have the ‘exceptions’ clauses like the residential ‘alterations’ rules allow.
Values are based on a three-year aging cycle.
DECRA offers three colors that meet cool roof rating requirements, as well as California’s Title 24 requirements. These include Tuscan Sun, Antique Chestnut and Mist Grey. The colors are available in most of your favorite DECRA styles including Villa Tile, Shake, Shake XD, Shingle XD, Shingle Plus and more.
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Original article source: DECRA Metal Roofing
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