Three-Year Performance Study Proves Long-Term Energy Efficiency of Painted and Unpainted Metal Roofs

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Measuring the energy efficiency of painted and unpainted metal roof systems as they age was the purpose of a three-year performance study by Oak Ridge National Laboratory’s (ORNL) Buildings Technology Center. The testing, which used side-by-side product samples and 10-, 15- and 30-year test fence samples, was conducted in cooperation with the Cool Metal Roofing Coalition, whose members include the American Iron and Steel Institute, the Metal Building Manufacturers Association, the Metal Construction Association, the National Coil Coatings Association, and the North American Zinc-Aluminum Coaters Association. Among the findings was that pre-painted metal roofing retains 95% of its initial solar reflectance over a three-year period. It showed too that the emittance of painted metal roofs is unaffected by climate.

To read and/or download this article, click Three-Year Study of Metal Roofing's Energy Efficiency - PDF.

To learn more about the energy efficiency of metal roofing and the Cool Metal Roofing Coalition, visit www.coolmetalroofing.org.

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