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Comfort and energy efficiency with cool metal roofs

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Comfort and energy efficiency with cool metal roofs


Jeff Alexander | September 25, 2015
Comfort and energy efficiency with cool metal roofs

Solar reflective coatings on metal roofs have high thermal reflectance and thermal emittance, keeping rooftop temperatures down in direct sunlight.

Until recently, roofs were one of the least efficient parts of a building. Now, energy-efficient metal roofs, with cool coatings are at the forefront of innovation, helping to increase the efficiency of the building envelope.

Cool coatings are increasingly being applied to improve how well a building operates. The energy-saving advantages of these coatings include:

  • Lowering roof temperatures keeps air conditioning bills down
  • Helping to make indoor temperatures more even, boosting comfort
  • Recognized by green building certification programs, such as LEED and Energy Star and qualifies for some rebate programs
  • Mitigates the heat island effect by keeping ambient temperatures down
  • Boosting indoor air quality

Solar reflective coatings on metal roofs have high thermal reflectance and thermal emittance, keeping rooftop temperatures down in direct sunlight. Solar reflectance is the ability of the roof to reject solar heat, experiencing only a slight rise in temperature during intense sun exposure.  Thermal emittance is the measure as a ratio of how much heat energy can be re-emitted by a surface into the atmosphere in the form of infrared energy.

In both cases, higher values mean cooler roofs and lower cooling costs. Valspar scientists are proud to be at the forefront of innovation, boosting the efficiency of metal roofs. Select a long-lasting solar reflective Valspar coating if you want a cool roof for your next project. 

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8330 On the River

 A housing community offering beautiful views of the Detroit River and Belle Isle as the city's waterfront is undergoing dramatic restoration.



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