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  1. DWalker

    Any standards for measuring emissivity and reflectance?

    The Cool Roof Rating Council (CRRC) has a Product Rating Program, which lists the applicable test methods for testing these radiative properties. Their web address is: http://www.coolroofs.org. For Solar Reflectance you can use either ASTM E903 or ASTM E1918. E903 is good for any roof type...

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