is made of SBS elastomerand and bitumen as basic material. Polyethylene film,Aluminium foil as surface finished material. one kind is with polyester reinforced,the thickness is :1.2mm 1.5mm and 2.0mm. another kind is without reinforcement,any thickness is available 1.self adhesive without bonding agent and torching 2.good rubber elasticity and elongation 3.excellent binding power 4. good self-coalescence 5.safe application,no pollution