Derbibase High Velocity APP Modified Bitumen Base & Ply Sheet comes with below features:

• High quality 3.0 mm 120 mil) smooth surfaced APP Modified Bitumen Roofing Membrane designed as a base or ply sheet
• DERBIBASE HV is a completely water-proof base ply for field and flashings when side and end laps are heat welded
• Derbigum's exclusive blend of APP (atactic polypropylene) polymers and select asphalts enhances the weathering capabilities and UV resistance of the membrane
• Mid reinforced with a 220 gram polyester mat combined with fiberglass runners that increase the membrane's strength and durability
• Product can also be applied with PERMASTIC Cold Adhesive or mechanically fastened