Metal Roof Solar Reflective Index

The elastomeric roof coating is one of the best products for the protection of your rooftops you can find out there.

Metal roof solar reflective index.

For every 1 increment in roof reflectance the surface temperature of the metal roof decreases 1 degree fahrenheit. Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate. Shingle roofs consist of overlapping panels made from a variety of materials such as fiberglass asphalt wood polymers or metals. Heat island effect roof.

It is defined so that a standard black reflectance 0 05 emittance 0 90 is 0 and a standard white reflectance 0 80 emittance 0 90 is 100. Berridge s kynar 500 hylar 5000. 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 requirements and is calculated according to astm e 1980 using values for reflectance and emissivity.

Coating existing asphalt shingles to make them cool however is not normally recommended or approved by shingle manufacturers. Sa is the proportion of the total incident solar radiation that is absorbed by the roofing material the remainder is reflected and is expressed as a ratio between 0 and 1. Berridge metal roofing is cool and sustainable. For every 10 increase in roof reflectance heating cooling costs drop 2 cents per square foot per year.

Buy cool asphalt shingles which use specially coated granules that provide better solar reflectance. A roof with a lower solar absorptance will absorb less heat than a roof with a higher solar absorptance and may help keep the roof space and building cooler on a hot day 1. This paint is capable of reflecting the sunlight allowing the inside of your home to remain cool and comfortable and it creates a highly reflective barrier with a percentage about 88. The us department of energy defines the solar reflectance index sri as a measure of the roof s ability to reject solar heat as shown by a small temperature rise.

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. Solar reflective index sri is important to understand when selecting a highly reflective roof coating that will help lower energy cooling costs. The sri is a calculation method using solar reflectance and thermal emittance values to determine the roof s overall capacity to refuse solar heat. 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.