Product Description
- High quality 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 heat resistant non-woven fiberglass mat that increases the membrane's strength and durability while still maintaining flexibility
- Product can also be applied with PERMASTIC Cold Adhesive or mechanically fastened
- DERBIBASE is a completely water-proof base ply for field and flashings when side and end laps are heat welded