DerbiBase Ultra

Product Documents

  • High quality 3.0 mm (120 mil) smooth surfaced APP Modified Bitumen Roofing Membrane designed as a base or ply sheet.
  • Performance Roof Systems' 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‚Äôs strength and durability.
  • DERBIBASE Ultra is a completely waterproof base ply for field and flashings when side and end laps are heat welded.

Product Properties

Installation Method
PERMASTIC Cold Adhesive, heat welded or mechanically fastened
Fiberglass mat
3.0 mm (120 mil)

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