This product consists of durable, reinforcing mat of non-woven reinforced polyester that has been coated and permeated with Modiflex SBS bitumen to a thickness of approximately 2.5 mm (98 mils). A poly-film covers the top surface. The back surfacing is a silicone treated film which is easily removed. The product can then be placed in flame-sensitive areas for flashing details as it is self-adhesive. This product will easily satisfy the requirements of CGSB-37.56-M.