Self-adhesive Polymer Modified  bitumen waterproofing coil membrane （unreinforced） is base-free self-adhesive polymer modified bituminous waterproof sheet which is made of synthetic rubber such as SBS, high-quality bitumen and tackifier as base materials, with polyester film (PET) and polyethylene film (PE) as upper surface material, and coated with silicon isolating membrane as the anti-sticking layer.