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Durabit EF

water based, polymer emulsion waterproofing membrane.

Durabit EF (EF is for Extra Flexible ) is a water-based, polymer emulsion waterproofing membrane. It has been tested by CSIRO (report 2947) and meets the criteria of AS4858:2004 Wet Area Membranes. Durabit EF is an elastomeric, environmentally friendly membrane designed for both internal and (non-exposed) external applications. It cures to form a durable, odourless, impervious, seamless membrane that resists re-emulsifying after it has fully, even if immersed in water. Durabit EF, available in white, black, grey and blue, does not stain grout or tiles and has excellent resistance to hydrostatic pressure.


Durabit EF has been formulated for most waterproofing applications requiring long-term waterproofing and meets the criteria of AS4858:2004 Wet Area Membranes and Contact With Drinking Water Test AS/NZS4020:2002, making it ideal for:

  • Shower recesses & wet areas
  • Tiled or topped – decks, terraces, balconies, podiums, roofs
  • Retaining walls, planter boxes
  • Water tanks and immersed conditions

Benefits and Advantages

Durabit EF is a versatile membrane suitable for many demanding waterproofing applications:

  • It meets the criteria of AS4858:2004 and is applied in accordance with AS3740
  • Not a hazardous product and not flammable. Water based
  • Permanently flexible (tested to class 111 – highest sensibility)
  • Suitable for contact with drinking water
  • Formulated for wet area and under tile applications
  • Does not re-emulsify after proper curing
  • Tough, durable and flexible
  • Dries fast
  • Compatible with most tile adhesives
  • Easy to apply
  • Virtually odourless
  • Will not stain grout or tiles
  • Available in range of colours

Product specification sheet

product sheet pdfDurabit EF product specification sheet opens in a new window



Duram logo
Duram Industries Pty Ltd, a 100% Australian owned company, has manufactured on site a comprehensive range of waterproofing for almost 30 years ensuring that you can select the correct product for a given waterproofing application.
  • Australasian Corrosion Association
  • Association for Materials Protection and Performance
  • Illawarra Innovative Industry Network
  • NACE International
  • The Society of Protective Coatings