High quality 3.0 mm (120 mil) smooth surfaced APP Modified
Bitumen Roofing Membrane designed as a base or ply sheet
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 fiberglass mat that increases the membrane’s strength and durability
DERBIBASE Ultra is a completely water-proof base ply for field and flashings when side and end laps are heat welded.
Product can also be applied with PERMASTIC Cold Adhesive,
heat welded or mechanically fastened.
Product Properties
ASTM
D6509-16
Installation Method
PERMASTIC Cold Adhesive, heat welded or mechanically fastened