For exposed roofs, balconies, and wet areas complying with NCC requirements, Everflex WPUV Elastomeric Waterproof Membrane provides a seamless, Class III high-elasticity barrier. Formulated to resist UV exposure without degrading, this micro-fibre reinforced membrane remains flexible over time and will not re-emulsify when subjected to prolonged water ponding or immersion.
Everflex WPUV is a single-component, water-based copolymer that cures to form a fully bonded, elastomeric barrier. It is micro-fibre reinforced to improve film strength and tensile durability. Achieving Class III high elasticity allows the cured membrane to accommodate structural movement in joint, wall, and floor transitions without rupturing. It also incorporates biological inhibitors to prevent the growth of mould and mildew in damp internal or external environments.
Everflex WPUV is suitable for both internal and external substrates, including:
All surfaces must be structurally sound, dry, clean, and free of oils, grease, curing compounds, and loose materials. Ground-surface protrusions must be removed to prevent thin spots in the membrane. Non-structural cracks and holes must be filled prior to application. WPUV cannot span open gaps.
For internal priming, apply Everflex WBP. For external balconies and roof decks, prime with Everflex VBS. Apply Everflex WPUV within 2 to 24 hours of the primer becoming touch-dry.
Thoroughly mix Everflex WPUV before application. Apply the first coat with a brush or roller at approximately 0.75mm wet film thickness (WFT). Apply the second coat at a right angle to the first at 0.75mm WFT. Always verify wet film thickness during application with a WFT gauge to ensure specified dry film thickness (DFT) targets are met. Allow 48 hours curing time at 25°C and 50% relative humidity before tiling.
Yes, Everflex WPUV is specifically formulated for UV exposed applications. It is tested to AS4654.1:2012 for external waterproofing and engineered to handle the harsh Australian sun without breaking down.
Everflex WPUV is built to withstand maintenance foot traffic. It forms a tough, durable Class 3 elastomeric barrier once fully cured, suitable for occasional access on roofs or balconies.
Yes, Everflex WPUV is tested to NCC AS-4858:2004 and AS4654.1:2012. This ensures compliance for both internal and external waterproofing applications across Australia.
Priming is always recommended for optimal adhesion, especially on porous surfaces. For internal applications, Everflex WBP is typically used. For external use on roof decks and balconies, Everflex VBS is recommended.
| Application | Key benefit | Primary trades |
|---|---|---|
| Exposed roofs, balconies, and pedestal systems | UV resistant and withstands maintenance foot traffic. Certified to AS4654.1 for external use. | Waterproofers, Roofers, Builders |
| Wet areas: showers, laundries, toilets, kitchens | Forms a seamless, fully bonded Class 3 waterproof barrier that does not re-emulsify. Compliant with AS4858. | Tilers, Waterproofers, Builders |
| Under tile applications on patios, terraces, decks | Rapid drying allows for earlier tiling. Proven compatibility with solvent-free tile adhesives. | Tilers, Waterproofers |
| General internal and external waterproofing | High permanent flexibility and micro-fibre reinforced for durability in varied conditions. Low VOC, Green Star compliant. | Waterproofers, Builders |
| Application | Key benefit | Primary trades |
|---|---|---|
| Exposed balconies and terraces | UV-resistant Class III membrane remains flexible while resisting ponded water and weather exposure. | Waterproofers, tilers, builders |
| Pedestal paving systems | Handles concealed waterproofing beneath pedestal systems with durable seamless coverage. | Commercial waterproofers, landscapers |
| Bathrooms and shower recesses | Creates a seamless waterproof barrier compatible with common cementitious tile adhesives. | Tilers, bathroom renovators |
| Timber flooring substrates | Low permeability allows use over structural plywood and timber flooring systems. | Builders, waterproofers |
| External rooftops and decks | Withstands maintenance foot traffic while maintaining waterproof integrity. | Roofing contractors, waterproofers |
Warning: Causes mild skin irritation. Causes eye irritation.
Wear gloves (Nitrile Rubber recommended), apron, safety glasses, and a respirator. Use adequate ventilation.
Use with adequate ventilation. If an inhalation risk exists, wear an organic vapour/particulate respirator meeting AS/NZS 1715 and AS/NZS 1716 requirements.
Store in a cool, dry, well-ventilated area, out of direct sunlight and away from foodstuffs. Keep containers upright and closed when not in use. Shelf life is a minimum of 12 months from the date of manufacture. For disposal, ensure appropriate PPE is used. Recycle material and container if possible, otherwise dispose in accordance with local regulations.
Proper substrate preparation is critical for Everflex WPUV to form a durable, compliant waterproof barrier. Skimping on prep means bond failure later.
Surface prep: Concrete must cure for at least 28 days. Sand cement screeds require a 3:1 ratio and must cure for a minimum of 4 days. All surfaces must be sound, dry, clean, and free from contaminants like dust, oils, and curing compounds. Rectify non-structural cracks or deformities.
Primer: Required. For internal use, Everflex WBP is suitable. For external decks and balconies, Everflex VBS is recommended. Apply within 2-24 hours after primer is touch-dry.
Surface prep: Masonry and render must cure for at least 4 days. Ensure surfaces are stable, dry, clean, and free from loose material or efflorescence. Fill any gaps or voids. Hebel (aggregate block) should also be clean and stable.
Primer: Required. For internal use, Everflex WBP. For external applications, Everflex VBS. Apply within 2-24 hours after primer is touch-dry.
Surface prep: Ensure sheets are securely fixed and joints are taped or sealed as per manufacturer guidelines. Wet area plasterboard, Villaboard, cement sheeting, external weatherboard, and blue board must be clean, dry, and free of dust. Structural plywood Type A (PAA JAS-ANZ) flooring needs to be stable and free from movement. Pre-cast concrete requires release agents to be fully removed.
Primer: Required. Everflex WBP for internal and Everflex VBS for external applications. Apply within 2-24 hours after primer is touch-dry.
| Property | Value |
|---|---|
| Product Type | Elastomeric Waterproof Membrane |
| Density | 1.24 g/cm³ |
| Consistency | Thick Liquid |
| Class | Class III Elastomeric liquid applied membrane |
| VOC Content | <2 g/L (Greenstar Compliant) |
| Clean Up | Water while wet |
| Storage Temperature | +10°C to +35°C |
| Application Temperature | +10°C to +35°C |
| Service Temperature | -40°C to +80°C |
| Consumption | 1.5 L/m² |
| Recoat Time at 25C | 2-4 hours after touch dry |
| Final Drying Time at 25C | 48 hours |
| Shelf Life | Minimum 12 months from DOM |
| Colours | Light Grey, Tintable |
| Certifications | AS4858:2004, AS4654.1:2012 |
| Permeability | 2.2 g/m²/24h |
| pH | 8-9 |
Here are some common examples on where Everflex WPUV Elastomeric Waterproof Membrane used by our customers.
