CGR Supply is a distributor of Sheet Metal Roofing and Flashing for Residential, Commercial, Industrial, Agricultural, Educational and Government projects. Also Fasteners, Accessories, Standing seam metal roofing systems and metal wall systems. Products: Sealtite Fasteners for metal buildings, SFSintec fasteners, screws, plates, clips for metal roofing and low slope roofing systems, Petersen Aluminum Pac-Clad Architectural metal roofing and wall products. Central States Manufacturing of metal panels for roof and wall applications. Titebond Metal Roof Sealant.