Products / DynaLastic 250 S

DynaLastic 250 S is a heavy-duty polyester-reinforced SBS modified bitumen base, ply or flashing sheet with a fine mineral parting agent that may be installed in Type IV asphalt or an approved JM adhesive. The data sheet (RS-4268, 5-25) says it meets ASTM D6164 Type II Grade S and 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. It lists a Peak Advantage guarantee of up to 30 years in most 2 to 5 ply JM SBS systems.