Sri Roof Rating

Most manufacturers still report separate emissivity and reflectivity data in their literature but the cool roof rating council an organization that verifies and labels cool roofing products has begun using the measure while retaining reflectivity and emissivity measurements.

Sri roof rating.

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. They are an independent organization that evaluates reflectivity capabilities of roofing products initially and 3 years after installation. Check our latest roofing ratings for detailed results for 16 different lines of asphalt roofing shingles. For information on roofing materials and installation see our roofing buying guide.

Higher sri ratings for shingles mean greater reduction in cooling load on a home. Berridge s kynar 500 hylar 5000. Berridge metal roofing is cool and sustainable the high reflectivity emissivity and solar reflectance index sri of berridge metal roofing helps mitigate the heat island effect. Asphalt roofing shingles with higher sri ratings are cooler in the sunshine.

Cool roof rating council. A value of 0 indicates that the material absorbs all solar energy and a value of 1 0 indicates total reflectance. The cool roof rating council accepts test reports from approved testing laboratories and then compiles the information in an easily accessed database. The cool roof rating council is a not for profit organization that validates the reflective and emissive properties of cool roof products.

The sr value is a number from 0 to 1 0. The higher the sri the cooler the roof will be. This system has been put into an online directory of more than 850 roofing products and is available for energy service providers building code bodies architects and specifiers property owners and community planners. Cool roofing products are classified in many cases by their solar reflectance index sri.

Asphalt shingle products with an energy star rating do not utilize the sri compliance path. These shingles must have an initial solar reflectance of at least 0 25 and a three. Different roofing technologies have different sri values. Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate.

We ve all been hearing more and more about cool roofing and rightly so this is a technology that according to the cool roof rating council can reduce utility costs by 7 15 as well as help reduce air temperatures in densely populated areas. The cool roof rating council is an excellent resource to finding out sri solar reflectance and thermal emittance values.