kool_membranesPolykool® SA APP membrane is part of Polyglass’ KOOL ROOF SOLUTIONS™ – offering you a long-term solution to help keep your building cool. Polykool is ENERGY STAR® rated, CA Title 24 compliant and Cool Roof Rating Council (CRRC®) rated with a solar reflectance of 76, thermal emittance of 80 and a solar reflectance index (SRI) of 92.