1.1 D-XXXX applies to testing the effect of simulated field exposure on the solar reflectance and thermal emittance of all roofing materials. The solar reflectance and thermal emittance of roofing materials are changed by exposure to the outdoor environment. These changes are caused by three factors: deposition of pollutants, microbiological growth, and change in physical or chemical properties. This practice applies to preparing samples for measuring the changes in solar reflectance and thermal emittance caused by simulated deposition of airborne pollutants. Exception: This practice shall not be applied to materials whose physical or chemical properties are designed to grossly change within three years of natural exposure. An example of such a material would be a metal panel with a temporary polymer coating.
KeywordsAccelerated simulated field exposure, solar energy, solar reflectance, thermal emittance
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development