Single Element Metal Roof Systems come in twenty profiles options between Standing Seam and Exposed Fastener panels. Like our wall panels, our roof panels fabricated from heavy gauge steel. Morin's SSR/SRR, SLR and SWL standing seam roof panels meet various testing approval ratings. The ratings include ASTM-E283, ASTM-E331, ASTM-E1646, ASTM0E1680, Class A fire ratings, UL90, ASTM-1592, FM Approvals and Florida Approvals.