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.
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.
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.
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.
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.
Yes, Azcothane Reo is formulated for protected waterproofing applications, including under tiles in wet areas and on balconies. Its acrylic chemistry allows for direct tile and render stick applications, and it is bitumen and tar free to prevent staining.
No, Azcothane Reo is not suitable for direct contact with high concentrations of chlorine. For such applications, consult the manufacturer for alternative product recommendations.
Typically, no. Azcothane Reo contains microfibres for internal reinforcement, eliminating the need for external reinforcing in most standard applications. For specific detailing or high-movement areas, it can be used with Duram Durascrim matting, followed by two additional coats.
No, Azcothane Reo is not suitable for application on wet substrates. Ensure all surfaces are clean, sound, and dry before application. Substrate moisture content must meet specified limits (e.g., <75% RH for cementitious).
| Application | Key benefit | Primary trades |
|---|---|---|
| Balconies and terraces | Provides flexible, internally reinforced waterproofing for protected outdoor areas, passing AS 4654.1 durability tests. | Waterproofers, Builders |
| Shower recesses and wet areas | Forms a seamless, AS 4858 compliant membrane, resisting biological growth in internal wet environments. | Tilers, Waterproofers |
| Under-tile and render applications | Offers direct stick compatibility with tiles and render, bitumen and tar-free formulation prevents staining. | Tilers, Renovators |
| Decks and podiums (protected) | Ensures high-performance waterproofing with excellent cyclic movement resistance for structural elements. | Builders, Waterproofers |
| Window reveals | Creates a flexible, bonded membrane to prevent water ingress in critical detail areas. | Waterproofers, Glaziers |
Ensure substrates are sound, dry, clean and free of laitance/contaminants. Verify concrete strength (≥20 MPa) and moisture (e.g., RH <75% via F2170). Treat cracks/joints as specified.
Shot-blast (preferred) or grind to obtain a clean, profiled surface for optimum adhesion.
For >1.6 mm non-structural cracks, grind to ~6 mm and seal (1:1 width:depth). Apply 150 mm wide detail coat over treated areas.
Prime per substrate: porous with Primeseal MC (preferred) or WB Primer/Maxiprime; metals with ME Primer; plastics with Superprime 711. Allow primers to cure as per their TDS.
Where required, apply two coats of Primeseal MC in line with project advice.
Use appropriate bandages (e.g., Durascrim/Leak-Seal/DualFlex) at joints and corners as specified.
Apply with a 9–13 mm nap roller. For waterproofing: two coats at 1 m²/L per coat (≈0.5 mm DFT/coat). For water-resistant (non-tanking) walls: one coat at ~1 m²/L as specified.
Embed Durascrim into a wet coat, working out wrinkles, then apply two further coats over the reinforced zone.
Target ~1.0 mm WFT per coat to achieve ~0.5 mm DFT. Check film thickness at corners/edges.
Use water for wet spills/equipment. Allow spills on carpet to cure then shave — do not attempt wet clean-off.
Wear safety glasses with side shields or chemical goggles to protect eyes. Wear chemical protective gloves (e.g., PVC, Butyl, Neoprene) and safety footwear or gumboots. Use overalls and a PVC apron for body protection. If overexposure exists, wear an SAA approved respirator with Type A Filter.
Use in a well-ventilated area. General exhaust is adequate under normal operating conditions. Ensure good occupational work practice to minimise inhalation of vapours or aerosols.
Store in original, securely sealed containers in a cool, dry, well-ventilated area, away from incompatible materials and foodstuffs. Protect containers from physical damage. Do not allow product to freeze. Dispose of waste according to local regulations; do not discharge into sewers or waterways.
Proper substrate preparation and priming are critical for Azcothane Reo performance and membrane adhesion.
Surface prep: Substrate must be cured to a minimum 20MPa compressive strength. Moisture content must be satisfactorily dry: <75% RH (ASTM F2170) or <4.5% (ASTM F2659). Ensure an effective damp-proof membrane is in place for slab-on-grade elements. Clean surfaces thoroughly, removing mould, paint, sealers, laitance (preferably by shot blasting), and other contaminants. Repair voids >5mm with a compatible filling compound. Address spalled areas and exposed reinforcing steel according to project-specific advice.
Primer: Required. Use Duram Primeseal MC (preferred), Duram WB Primer, or Maxiprime. For vapour retarding or elevated moisture, apply two coats of Duram Primeseal MC. Excessively porous surfaces may need multiple primer coats.
Surface prep: Surface must be dry, clean, smooth, and firm, free of release agents, dust, and projections. Ensure sheeting is installed as per manufacturer/engineer recommendations with structural support and correct fixings to prevent differential movement. Cleanly cut all sheet edges and remove debris. Treat joints between sheets with an approved compound (e.g., Duram Resiflex Hybrid or Resiflex FC). Undertake substrate-specific moisture testing to confirm dryness. Particleboard sheeting is not recommended.
Primer: Optional/Required. Substrate-specific moisture testing on sheeting material must confirm dryness prior to priming and membrane application. Consult manufacturer for advice on sheeting with pre-applied film-forming coatings.
Surface prep: For small sections like drainage outlets or pipe penetrations. Mechanically abrade metal surfaces to AS 1627.4, class 2.5 ("Near White Metal"). Mechanically abrade plastic surfaces to create a profile. Clean all non-porous substrates with an IPA wipe (2-cloth method), allowing residual solvent to flash off. Project-specific adhesion testing is recommended, especially for galvanised substrates or large areas.
Primer: Required. Use Duram ME Primer for metal. Use Duram Superprime 711 for plastic substrates (e.g., floor wastes, puddle flanges).
| Property | Value |
|---|---|
| Bond Strength (Concrete Masonry) | 60 N |
| Bond Strength (Plywood) | 119 N |
| Cyclic Movement | Pass |
| Elongation At Break | 311% |
| Heat Ageing | Pass |
| Temperature Resistance | Pass |
| Tensile Strength | 1.32 MPa |
| Durability (AS4654.1) | Pass |
| Durability (AS4858) | Pass |
| Water Vapour Transmission Rate | 6.36 g/m²/24 hours |
| Water Absorption | 3.67% |
| Percent Solids By Volume | 57% |
| Packaging | 15 Lt Pail (16kg) |
| Colour | Grey |
| Shelf Life | 12 months |
| Application Type (Standard) Coverage | 15 m²/Pail |
| Application Type (Standard) Wet Film Thickness | 1.0 mm |
| Application Type (Standard) Dry Film Thickness | 0.5 mm |
| Application Type (Water Resistant Non-Tanking Walls) Coverage | Min 1 m²/L |
| Application Type (Water Resistant Non-Tanking Walls) Wet Film Thickness | 1.0 mm |
| Application Type (Water Resistant Non-Tanking Walls) Dry Film Thickness | 0.5 mm |
| Waterproof Coat 1 Coverage | 1 m²/L per coat |
| Waterproof Coat 1 Dry Film Thickness | 0.5 mm |
| Waterproof Coat 2 Coverage | 1 m²/L per coat |
| Waterproof Coat 2 Dry Film Thickness | 0.5 mm |
| Water Resistant Coat Coverage | 1 m²/L |
| Water Resistant Coat Dry Film Thickness | 0.5 mm |
| Touch Dry Time (25°C, 50% RH) | 2-4 hours per coat |
| Recoat Time (25°C, 50% RH) | 4-24 hours |
| Full Cure Time (25°C, 50% RH) | 4 days |
Here are some common examples on where Duram Azcothane Reo used by our customers.
