... thick 2. Base materials: Polyester and glass fiber 3. Modifiers: SBS and APP 4. Surfacing: Sand, chips, PE film and foil ... Characteristics: Capacity: 2-8 million m2/ year of production of SBS, APP modified bitumen membrance, based on 250 working-days, and ... 3mm Base mat: Polyester, fiber glass or compound base Modification: SBS, APP and so on Membrane surface: Sand, schist, PE film ...