Berkeley Lab Heat Island Group chemist Mohamad Sleiman prepares to insert clean and soiled roofing specimens into a weatherometer. The weatherometer simulates exposure to heat, moisture, and UV radiation.
Photo courtesy of Heat Island Group, Lawrence Berkeley National Laboratory
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Berkeley Lab Heat Island Group chemist Mohamad Sleiman configures a weatherometer to simulate the effects of heat, moisture, and UV radiation on roofing materials.
Photo courtesy of Heat Island Group, Lawrence Berkeley National Laboratory