Understanding how a construction material like metal roofing or siding will interact with the sun can help a building prepare for weather conditions minimize heating or cooling costs and reduce heat island effects in urban areas.
Light gray metal roof sri.
Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate.
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A value of 0 indicates that the material absorbs all solar energy and a value of 1 0 indicates total reflectance.
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For example metal roofs finished with a high sri coating will have a lower temperature under sunny conditions compared to a similar uncoated metal roof.
Total solar reflectance tsr.
Yellow and gray is a classic color pairing that works well on all types of houses.
Tsr e and sri values.
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Many of the colors are offered by more then one company with such standard colors old town grey old zinc grey patina green and tahoe blue offered by most.
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However effective solar design is more complicated than simply selecting high sri materials as in cooler locations solar gain may actually be desirable.
For a more edgy look try a brighter yellow with a dark gray roof.
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Solar reflectivity r solar reflectance index sri by color.
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Offers sustainable building envelope technology products that are coated with cool pigment paint that reflects infrared radiation thus allowing the color to appear the same but keeping the material cooler.
Solar reflectivity or reflectance is the ability of a material to reflect solar energy from its surface back into the atmosphere.
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A lighter color of the roof will protect your home from unpleasant heat as well as help lower your monthly energy expenses by as much as 20 30 as well as help reduce the load on your ac systems in the summer.
It is best to choose a light color metal such as white light bronze beige peach light green or blue if you live in a region that has a lot of sun and a hotter climate.
There are 3 main figures to understand when choosing a color.
For a more traditional look a sunny light yellow pairs beautifully with a light gray roof.