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SRI – The Quick Facts

    Summer temps are getting hot! Revisit solar reflectance index, Blog Cover

    What does SRI mean for you?

    First – What does SRI mean for you? If you choose a roofing material with a higher SRI number, then you can expect to keep your building inherently cooler in the warmer months. As a result, you’ll use less energy to cool your building, thus reducing your energy bill.

    Solar Reflectance Index is the amount of solar energy reflected by a surface, versus absorbing it.

    Solar reflectance is measured from 0 to 100. The higher the number, the better its able to reflect.

    Thermal emittance measures the ability of a particular surface to release any heat it absorbed. This is always measured from 0 to 100.  The higher number, the better its able to release the heat.

    When solar reflectance and thermal emittance is combined, the SRI is the result.  As you may have guessed, the larger the number, the better. 

    Duro-Last White: 108

    White Metal: 82

    EPDM: -1

    White Granular Surface Bitumen: 28

    Light Gravel on BUR: 37

    White Asphalt Shingles 21

    When considering the roofing material, there is more to consider that just the bottom line of the proposal.  Understanding the SRI of the material is just one area to note! 

    Call us to learn more about SRI’s.  (740) 323-3174