Installing a cool roof can cut your energy costs while contributing toward a better environment.
Solar reflectance index metal roofing.
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.
This is called the solar reflectivity index sri.
New technology helps to close the gap between aesthetics and solar reflectance.
Berridge s kynar 500 hylar 5000.
By lessening the demand for energy it decreases carbon emissions that cause pollution.
Requirements and is calculated according to astm e 1980 using values for reflectance and emissivity.
Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate.
Furthermore it doesn t store as much thermal energy as an ordinary roof.
The guide to choosing a cool roof.
Cool metal roofing coated with kynar 500 based resin is one way to limit the urban heat island effect.
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.
Urban heat island a built environment where the large portion of dark absorbing.
The benefits of cool metal roofing cool metal roofing has many benefits beyond savings on energy costs.
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.
Many homeowners elect a balance between solar reflectance and aesthetics.
Emissivity is a material s ability to release absorbed energy.
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.
Reflected solar energy allows the roof surface to remain cooler which means less heat is transferred into the building.
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.
Also important characteristic to a metal building panel color is the ability of the panel to release absorbed energy called emissivity.
