... 20m Surface: Aluminium, PE film, blue Flashing tape is one self-adhesive material, it is made of SBS elastomer and bitumen ... 15m, 20m Surface: Aluminium, PE film, blue film, HDPE 1. Self adhesion without bonding agent and torching. 2. Good rubber elasticity ... and elongation 3. Excellent binding power 4. Good self-coalescence 5. Safe application, no pollution marine tape, al flashing ...