Corle Building Systems offers a multitude of roof, wall, and interior liner panel profiles to meet the needs of today's agriculture, commercial, Industrial, and residential requirements. Panel selection includes several options for both roof and wall. Panels are manufactured from GR-80 Galvalume substrate with a thickness of 22, 24, and 26- gauge for exterior sheeting and 26 and 29 gauge for interior sheeting. Galvalume is high-quality cold-rolled sheet steel with a corrosion resistance metallic coating of aluminum and zinc. In addition, panel striations are available in the vertical leg systems. Our standard offering is a zinc-aluminum fastener to ensure that any exposed fastener will last as long as the roof.