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water-based, highly flexible, high performnace, polyurethane fortified acrylic emulsion waterproofing membrane

Azcothane is a water-based, highly flexible, high-performance, polyurethane-fortified acrylic emulsion waterproofing membrane formulated for use is demanding exposed, under tile, underground and immersed waterproofing applications. Azcothane’s formulation complies with AS4858:2004 and is generally applied in accordance with AS3740:2004. It is liquid applied and cured to form a durable, flexible, strong, UV-resistant, odourless, seamless, and impervious waterproofing membrane. It does not re-emulsify after fully cured, making it ideal for long-term waterproofing. It will not stain grout or tiles.


Azcothane has been specifically designed for exposed, undertile, underground and immersed waterproofing requirements included the long-term waterproofing of:

  • Exposed concrete and metal roofs
  • Wet areas within buildings (shower recesses, bathrooms & laundries)
  • Ponds & water features
  • Concrete and timber decks
  • Terraces and balconies (under tiles)
  • Concrete slabs
  • Retaining walls
  • Planter boxes
  • Water retaining structures
  • Tiles or topped areas

Suitable Surfaces

Azcothane is suitable for properly primed: Concrete, cement, cement render, block work, brick, masonry, FC sheeting and CFC sheeting, plaster board and timber, plywood and particle board (if primed with Duram Primeseal) and metal (if primed with a metal primer).

Additional Uses

Azcothane has been formulated as a completely versatile waterproofing membrane, available in a range of colours, making it is suitable for:

  • Exposed to direct sunlight on roofs (flat, sloping or metal deck)
  • Under tile applications – wet areas, balconies, terraces etc.
  • Underground applications – retaining walls, planter boxes and garden areas
  • Immersed applications – ponds and water features

Benefits and Advantages

Azcothane is a versatile membrane suitable for many demanding waterproofing applications:

  • Polyurethane fortified
  • Internally reinforced with micro-fibres
  • It meets the criteria of AS4858:2004 and is applied in accordance with AS3740:2004
  • UV resistant – suitable for direct exposed to sunlight
  • Not a hazardous product and not flammable. Water based
  • Permanently flexible (tested to class 111 – highest tensibility) & strong
  • 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 pdfAzcothane product specification sheet opens in a new window



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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