Sri Roofing Materials

It stands for solar reflectance index which is a combination of two numbers a material s emissivity a measure of how effectively it rejects heat and reflectivity how much light energy it bounces back.

Sri roofing materials.

Cool roofing products are classified in many cases by their solar reflectance index sri. Emissivity is a material s ability to release absorbed energy. Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate. Requirements and is calculated according to astm e 1980 using values for reflectance and emissivity.

Berridge metal roofing is cool and sustainable. Berridge s kynar 500 hylar 5000. Hotline 077 255 0770 office hours weekdays 9 00am to 5 00pm saturdays 9 00am to 1 00pm head office no 752 baseline road colombo 09. This measurement can be used as an indicator of how hot shingles are likely to become when they re exposed to the sun.

So just what is sri. To meet leed requirements a roofing material must have a sri of 29 or higher for steep slope 2 12 roofing and a sri value of 78 or higher for low slope roofing. It ranges from 0 to 100. The high reflectivity emissivity and solar reflectance index sri of berridge metal roofing helps mitigate the heat island effect.