The solar reflectance index sri is a measure of the constructed surface s ability to reflect solar heat as shown by a small temperature rise.
Solar reflectance index metal roofing.
Furthermore it doesn t store as much thermal energy as an ordinary roof.
Installing a cool roof can cut your energy costs while contributing toward a better environment.
Requirements and is calculated according to astm e 1980 using values for reflectance and emissivity.
Reflected solar energy allows the roof surface to remain cooler which means less heat is transferred into the building.
Cool metal roofing coated with kynar 500 based resin is one way to limit the urban heat island effect.
The benefits of cool metal roofing cool metal roofing has many benefits beyond savings on energy costs.
Many homeowners elect a balance between solar reflectance and aesthetics.
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.
The solar reflectance index is used for compliance with leed.
It is defined so that a standard black surface reflectance 0 05 emittance 0 90 is 0 and a standard white surface reflectance 0 80 emittance 0 90 is 100.
Also important characteristic to a metal building panel color is the ability of the panel to release absorbed energy called emissivity.
Emissivity is a material s ability to release absorbed energy.
Urban heat island a built environment where the large portion of dark absorbing.
Berridge s kynar 500 hylar 5000.
Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate.
Leed requires a roofing material to have a value of 29 or higher for a steep roof pitch 2 12 and 78 or higher for a roof pitch 2 12.
New technology helps to close the gap between aesthetics and solar reflectance.
Heat island effect roof.
This is called the solar reflectivity index sri.
By lessening the demand for energy it decreases carbon emissions that cause pollution.
The cool metal roofing paint resin formula formulated by sherwin williams or another paint supplier contains innovative solar reflective pigments which is the key differentiator.
Kynar 500 based painted metal roofing can achieve solar reflectance of over 70.
