Casali Dermabit ExtraCasali Dermabit Extra

Casali Dermabit Extra – This Elastoplastomeric membrane is based on bitumen modified with APAO polymers (Amorphous Poly Alpha Olefins)

A single and multi-layer solution for large commercial and industrial roofing, residential buildings, large metal structures with and without insulation, exposed waterproofing systems mechanically fixed, roofing with photovoltaic (solar) panels, waterproofing foundations, retaining walls and large structures in general.

Casali Dermabit Extra is manufactured using polyester with high mechanical properties and excellent dimensional stability.

This APAO membrane uses synthesis engineered polymer compound to ensure a thermal operating range of -25°C/+150°C, high elasticity, excellent resistance to atmospheric ageing, perfect joint seal and excellent adhesion to any type of deck, high resistance to mechanical and thermal stress. The range of Dermabit® membranes are certified by the most prestigious certification institutes such as BBA, ITC, BRANZ and have been used for more than 40 years in more than thirty countries all over the world.


  • Performance certificates – Dermabit® : CE, EQ (Enduring Quality), BBA, BRANZ
  • Compound – Dermabit® : APAO – EQ
  • Flexibility at low temperature – Dermabit® : -20°C, -25°C
  • Flow resistance at elevated temperature – Dermabit® : 150°C
  • Reinforcement – Dermabit® : POLYESTER SP (spunbond nonwoven polyester reinforced with fiberglass threads), POLYESTER HSP (spunbond nonwoven polyester reinforced with fiberglass threads), POLYESTER GS (high grammage spunbond nonwoven polyester reinforced with fiberglass threads for great structure)
  • Upper Finishing – Dermabit® : SABBIA, SLATE CHIPS
  • Bottom Finishing – Dermabit® : POLYETHYLENE

Technical Data Sheet

Safety Data Sheet


Available Colours

This product is available in the following colours & finishes.

Natural Slate


Natural Slate

Bourgogne slate

Special Order

Dark Brown Slate

Special Order

Green Slate

Special Order

Red Slate

Special Order


Special Order

Dermabit Extra Textile

White Slate

Special Order

Olympia White Slate