Composed of SBS modified bitumen on fiberglass reinforcement with highly reflective white top surface, Soprema's Energy Star-rated SopraStar roof membrane maintains high reflectivity and emissivity.
Can anyone tell me what the difference is (for a brownstone with a flat roof) between these two type of roofing materials: 1) White granular modified bitumen roofing 2) Firestone APP 160 cool Thank ...
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