Polyglass U.S.A., Inc., a leading manufacturer of roofing and waterproofing solutions for low- and steep-slope applications, announces important new updates to Polyfresko, a highly-reflective, white modified bitumen membrane cap sheet used as the final layer in a multi-ply roof system or as a flashing membrane.
Independent laboratory testing confirms Polyfresko’s superior granule embedment and documents its aged reflectivity performance – with both outperforming all major competitors in the granulated “bright white” cap sheet category. Granule embedment was tested using ASTM D4977 Standard Test Method for Granule Adhesion to Mineral Surfaced Roofing by abrasion. The recently completed three-year aged reflectivity testing was conducted in three different climate zones, and demonstrated that Polyfresko maintains reflectivity performance over time. The product was deemed suitable for most Cool Roof specifications due to Polyfresko’s initial and aged reflectivity and emissivity performance. The laboratory testing results enabled Polyfresko to gain Energy Star Certification.