Products / DynaWeld 250 S

DynaWeld 250 S is a heavy-duty polyester-reinforced SBS modified bitumen base, ply or flashing sheet installed by heat welding. The data sheet (RS-4422, 2-21) says it meets ASTM D6164 Type II Grade S, prints a thickness of 138 mil, and a roll about 1 m wide by 10 m long covering 95.8 square feet at 90 lb, made in Macon. It lists a Peak Advantage guarantee of up to 30 years in most 2 to 5 ply JM SBS systems.