Waterproofing protected wet areas, like balconies and shower recesses, requires a membrane that performs reliably and simplifies the job. Duram Azcothane Reo delivers compliance and ease. Its internal reinforcement means no separate fabric layers, speeding up application without compromising structural integrity. This ensures compliant, flexible protection where it matters most, ready for direct tiling or rendering.

Why this product exists

Duram Azcothane Reo is a water-based, polyurethane dispersion fortified acrylic hybrid membrane. It was formulated to provide a flexible, high-performance waterproofing solution specifically for demanding, protected wet areas. The internal microfibre reinforcement removes the need for additional external reinforcing fabrics, simplifying application and saving time on site. Certified as a Class III membrane to AS 4654.1 and AS 4858, it meets National Construction Code requirements for direct tile and render applications.

The numbers that matter

With an Elongation at Break of 311%, this membrane handles typical substrate movement found in concrete slabs and lightweight sheeting without cracking, providing a significant safety margin for long-term performance. Its Tensile Strength of 1.32 MPa ensures the cured membrane resists tearing and damage under normal conditions. Bond Strength of 119 N to plywood and 60 N to concrete masonry confirms strong, reliable adhesion to common building substrates, reducing delamination risks. The Water Vapour Transmission Rate of 6.36 g/m²/24 hours allows the membrane to breathe, managing moisture movement while remaining fully waterproof to the substrate below.

What it's like to use

Azcothane Reo is a single-pack product, eliminating mixing on-site for consistent results. Apply it using a medium-nap (9-13mm) roller to achieve the specified dry film thickness over two coats. It reaches touch dry in 2-4 hours per coat, with a recoat window of 4-24 hours. A full cure takes 4 days, after which it is ready for tiling or topping. Clean-up is straightforward, with wet spills and equipment easily cleaned with water, minimising the need for solvents on site.

Proper substrate preparation is critical for adhesion. For porous cementitious substrates, prime with Duram Primeseal MC. For metal details, use Duram ME Primer, and for plastic elements like puddle flanges, specify Duram Superprime 711. Ensure substrates are dry; Azcothane Reo is not for application on wet surfaces.

Where this product excels

  • Shower Recesses and Wet Areas: The internal reinforcement and AS 4858 compliance make it ideal for internal wet areas, ready for direct tile application once cured.
  • Balconies and Terraces (Protected): Suitable for waterproofing balconies and terraces that will be protected by tiles or another overburden, offering durable, flexible protection against moisture ingress.
  • Decks and Podiums (Protected): Applied to podiums and decks before the final wearing surface, it provides a robust, seamless membrane with Class III flexibility.
  • Window Reveals: Its ease of application and internal reinforcement make it efficient for detailing around window openings, creating a continuous waterproof barrier.

How it fits in a real system

Azcothane Reo typically sits as the primary waterproofing layer in a protected build-up. After comprehensive substrate preparation, including crack detailing with a compatible sealant and priming with products like Duram Primeseal MC, Azcothane Reo is applied in two coats. Its internal reinforcement means this step is often quicker than systems requiring a separate fabric layer. Once fully cured, it forms the ideal base for direct tile adhesive or render, ensuring a seamless and compliant waterproof envelope beneath the final finish.

Choose this when

  • When waterproofing protected wet areas such as showers, internal wet areas, or balconies and podiums that will be tiled or covered.
  • When you require a Class III membrane compliant with AS 4654.1 and AS 4858 for the National Construction Code.
  • When looking for a water-based, low VOC membrane that allows for water clean-up.
  • When seeking an internally reinforced solution to simplify application and eliminate the need for separate reinforcing fabric.
  • When the final finish will be direct-stick tiles or render.

Don't use this when

  • Not for: Direct contact with high concentrations of chlorine, as this can degrade the membrane.
  • Not for: Application on wet substrates; ensure the surface is dry for optimal adhesion and performance.
  • Not for: Use as a trafficable waterproof membrane; for exposed trafficable areas, consider a product like Duram Multithane Standard.
  • Not for: Below-grade applications or planter boxes, which require different membrane types for specific sub-surface and root protection demands.
  • Not for: Exposed waterproofing applications; for exposed balcony waterproofing, a product such as Duram Multithane Standard is a better fit.

Duram Azcothane Reo meets rigorous Australian standards for waterproofing. It is certified as a Class III membrane to AS 4654.1 for external above-ground applications and AS 4858 for wet area membranes, ensuring full compliance with the National Construction Code. Additionally, its low VOC levels contribute to Green Star environmental criteria, supporting sustainable building practices.