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Use Everflex WPM for: High-performance, highly flexible Class 3 waterproofing under tiles in wet areas, showers, laundries, kitchens, balconies, decks, and patios.
Everflex WPM is a premium grade, single-component elastomeric waterproof membrane specifically engineered for demanding under-tile applications. This ready-to-use, water-based membrane cures to form a highly flexible (Class III, 391% elongation) seamless barrier that accommodates significant substrate movement, making it ideal for timber floors and areas prone to cracking. Reinforced with micro-fibres for enhanced toughness, Everflex WPM offers rapid drying times for earlier tiling and boasts an extremely low VOC content (<1g/L), meeting Green Star environmental criteria. Tested and compliant with Australian Standards AS4858:2004 and AS4654.1:2012, it provides reliable waterproofing for internal and external wet areas without re-emulsifying once cured.
Primer Information: Priming is always recommended to ensure optimal adhesion, especially on porous or warm surfaces. For internal applications, Everflex WBP Primer is typically suitable. For external areas like balconies and decks, the higher performance Everflex VBS Primer is recommended. Always consult the relevant primer Technical Data Sheet (TDS) and apply according to instructions. Apply Everflex WPM once the primer is touch-dry (typically within 2-24 hours depending on conditions).
Cure Time: Everflex WPM features rapid drying properties. Recoat time between coats is approximately 2-4 hours after becoming touch-dry (at 25°C / 50% RH). Allow the final coat to cure for approximately 48 hours (at 25°C / 50% RH) before commencing tiling. Note: All drying and curing times are indicative and will vary significantly based on ambient temperature, humidity, air movement, and substrate porosity.
Coverage Rate: Achieve the minimum required Dry Film Thickness (DFT). For internal applications, minimum DFT is 1mm. For external applications, minimum DFT is 1.3mm. This typically requires a total consumption of approximately 1.5 litres per square metre (L/m²), applied in a minimum of two coats (e.g., 2 x 0.75 L/m²). Use a wet film gauge to ensure correct thickness per coat (target approx 0.75mm WFT per coat).
Application Temperature Range: Apply Everflex WPM only when both substrate and ambient temperatures are between 10°C and 35°C. Do not apply if temperatures are expected to fall below 10°C during the drying period, or if rain is imminent.
Chemical Properties: An advanced, water-based elastomeric formulation incorporating micro-fibre reinforcement. It is non-toxic, low odour, with extremely low VOCs (<1g/L). Contains inhibitors against mould and biological growth. Cleans up easily with water while wet.
Key Features of Everflex WPM
- Class III High Flexibility: Exceptional 391% elongation provides superior crack bridging and accommodates significant substrate movement, ideal for timber floors.
- Rapid Drying: Fast touch-dry and recoat times (2-4 hours @ 25°C) allow for quicker application of multiple coats and earlier tiling (approx 48 hrs cure).
- Extremely Low VOC (<1g/L): Meets Green Star environmental criteria, minimal odour, safer for installers and occupants.
- Ready To Use - Single Pack: No mixing required, ensures consistency and simplifies application. Easy cleanup with water.
- Micro-Fibre Reinforced: Integrated fibres enhance toughness, durability, and tear resistance of the cured membrane.
- Australian Standards Compliant: Tested to AS4858:2004 (Class III) and AS4654.1:2012 for internal and external under-tile waterproofing assurance.
- Does Not Re-emulsify: Once fully cured, provides a reliable, long-term waterproof barrier even with prolonged water contact (under tiles).
- Inhibits Mould Growth: Formulation helps resist the growth of mould and mildew on the membrane surface.
Why Choose Everflex WPM:
- Superior Movement Accommodation: Choose Class III flexibility for demanding applications over timber, particleboard, or substrates prone to movement.
- Faster Project Turnaround: Rapid drying properties minimise delays, allowing tiling work to commence sooner.
- Healthier & Greener Choice: Very low VOC formula contributes to better indoor air quality and meets environmental building standards.
- Simplified Application: The ready-to-use, single-component format is convenient and reduces potential for on-site errors.
- Reliable & Compliant Waterproofing: Independently tested to meet stringent Australian Standards for under-tile wet area waterproofing.
When to Choose Everflex WPM versus Alternatives:
- Choose Everflex WPM over Class II Membranes when: Maximum flexibility and crack-bridging capability is required (e.g., over timber floors, structural plywood, potentially unstable substrates).
- Choose Everflex WPM over 2-Component Membranes when: Ease of use (no mixing) is preferred, very low VOCs are required, and ambient conditions are suitable for water-based curing (not excessively cold/damp for extended periods).
- Choose Everflex WPM over Solvent-Based Membranes when: Low odour, low VOCs, non-flammability, and easy water cleanup are desired.
- Consider alternatives when: The membrane needs to be trafficable or permanently UV exposed (WPM must be tiled/topped), application temperatures are consistently below 10°C, or negative hydrostatic pressure resistance is needed.
Trade-Specific Applications for Everflex WPM:
For Tilers:
- Application: Providing a high-performance, highly flexible waterproof base before laying tiles in bathrooms, showers, laundries, kitchens, balconies, and decks.
- Technique: Ensure membrane is correctly primed, applied to minimum DFT (1mm internal/1.3mm external), fully cured (approx 48hrs), and use compatible polymer-modified cement-based tile adhesives.
- Performance Benefits: High flexibility reduces risk of tile cracking due to substrate movement. Rapid drying allows faster job completion. Compatible with recommended Adheseal, RLA & Gripset adhesives.
For Waterproofing Applicators:
- Application: Compliant waterproofing system for internal wet areas (AS4858) and external above-ground areas (AS4654.1) specifically designed for under-tile scenarios. Excellent for timber floor wet areas.
- Technique: Correct surface prep, priming (WBP/VBS), detailing of joints/corners (sealant/tape), and achieving the required DFT over minimum two coats are essential for compliance.
- Performance Benefits: Class III flexibility provides extra assurance on movable substrates. Single-component application simplifies workflow. Low VOC is often preferred by clients.
For Bathroom Renovators & Builders:
- Application: User-friendly and effective waterproofing solution for wet area tanking during renovations or new builds. Suitable for various common substrates found in Australian homes.
- Technique: Ready-to-use format simplifies application. Ensure thorough substrate preparation and priming. Follow DFT requirements carefully.
- Performance Benefits: Low odour and low VOC ideal for working within existing homes. Rapid drying helps keep renovation timelines on track. Reliable performance when applied correctly.
Application Information
- Required Tools: Quality brush (for detailing/cutting in), medium nap roller, wet film thickness gauge, appropriate PPE. Mixing equipment not needed (stir thoroughly before use).
- Trade-Specific Tips: *Stir Well:* Thoroughly stir Everflex WPM before use, as settling may occur. *Priming is Key:* Do not skip priming; use Everflex WBP (Internal) or VBS (External) for best results. *Film Build:* Use a wet film gauge to check thickness during application – aim for ~0.75mm WFT per coat to achieve target DFT. *Corners & Joints:* Ensure correct detailing using appropriate sealant (Adheseal PU/Hi-Flex MS) and bond breaker tape (Elastoband/Butyl Tape) if needed for dynamic joints. *Multiple Coats:* Apply a minimum of two coats at right angles to each other.
- Common Issues and Solutions: *Poor Adhesion:* Inadequate surface prep, incorrect/no primer used, or substrate contamination. *Insufficient Thickness:* Not applying enough product per coat or insufficient coats – leads to non-compliance and potential failure. Use WFT gauge. *Slow Drying:* Cold temperatures (<10°C), high humidity, or poor ventilation. Improve conditions if possible, allow longer drying times. *Blistering/Bubbling:* Applying in direct hot sun, onto hot substrate, or over inadequately dried primer/previous coat.
Storage and Shelf Life
- Storage Requirements: Store in original, unopened pails in a cool, dry area, protected from direct sunlight and frost. Storage temperature range: +10°C to +35°C.
- Shelf Life Information: Minimum 12 months from the date of manufacture (DOM) when stored correctly. Check pail for DOM.
- Handling Considerations: Water-based, low VOC. Avoid freezing. Keep pail sealed when not in use to prevent skinning.
Certifications and Compliance
- **AS4858:2004:** Compliant - Classified as a Class III Elastomeric Waterproofing Membrane (based on 391% elongation test result).
- **AS4654.1:2012:** Compliant - Suitable for use as a waterproofing membrane for external above-ground use (under finishes).
- **Low VOC:** Meets "Green Star" environmental criteria (<1g/Litre).
- Suitable for use in systems designed to comply with AS3740 (Waterproofing of domestic wet areas).
Frequently Asked Questions About Everflex WPM
Q: The TDS mentions both Class III (AS4858) and Class II (AS4654.1) elongation. Which is it?
A: The specific elongation test result shown (391%) clearly meets the Class III requirement (>300%) according to AS4858. While AS4654.1 has different classes, the material's inherent high flexibility classifies it as a Class III membrane, offering superior movement capability suitable for both internal and external under-tile applications.
Q: How soon can I start tiling after applying the second coat of Everflex WPM?
A: Allow approximately 48 hours cure time after applying the final coat before starting tiling, assuming standard conditions (25°C / 50% humidity). This time can be longer in cold or humid conditions. Ensure the membrane feels firm and fully cured before proceeding.
Q: What primer should I use for Everflex WPM on compressed fibre cement (CFC) sheeting?
A: CFC sheeting is considered a porous substrate. For internal applications, Everflex WBP primer is typically recommended. For external applications (like balconies using CFC), the higher performance Everflex VBS primer is recommended for best results.
Q: Can I use Everflex WPM inside a swimming pool or water tank?
A: Everflex WPM is designed primarily for under-tile waterproofing in wet areas, balconies etc. While it doesn't re-emulsify, it is not specifically recommended or certified in the TDS for continuous immersion applications like swimming pools or potable water tanks. For those applications, a product like Gripset 2P (which is certified for potable water and immersion) would be more suitable.
Q: Does Everflex WPM need reinforcing fabric or bandage in the corners?
A: For standard internal corners and static joints, applying a sealant fillet (Adheseal PU/Hi-Flex MS) as a bond breaker is usually required by Australian Standards. While Everflex WPM is micro-fibre reinforced, adding polyester fabric or bandage reinforcement embedded in the first coat over corners/joints can provide extra strength, especially in high-movement areas or as specified. Check AS3740/AS4654 requirements.
Q: Why is having a Low VOC membrane important?
A: Low VOC (Volatile Organic Compound) membranes like Everflex WPM release significantly fewer harmful chemicals into the air during and after application. This means better air quality, reduced odour, increased safety for applicators (especially indoors), and suitability for environmentally sensitive projects or Green Star buildings.
Use Everflex WPM for:
- Internal Wet Area Waterproofing: Showers, bathrooms, laundries, toilets, kitchens under tiles, meeting AS3740 requirements via AS4858 compliance.
- External Under-Tile Waterproofing: Balconies, decks, patios, and terrace floors that will be covered with tiles or suitable toppings (meets AS4654.1 requirements).
- High Flexibility Applications: Ideal for waterproofing over structural plywood floors (Type A PAA JAS-ANZ) or substrates prone to minor cracking or movement.
- Low VOC / Green Building Projects: Suitable for projects specifying environmentally friendly materials with minimal odour and emissions.
- General Under-Tile Sealing: Preventing moisture ingress beneath tiles in various applications where a highly flexible membrane is desired.
Why Use Everflex WPM for:
- Superior Movement Capability: Class III flexibility (391% elongation) provides maximum protection against cracking in the membrane and tiles due to substrate movement.
- Faster Job Completion: Rapid drying allows for quicker recoating and earlier commencement of tiling compared to standard cure membranes.
- Healthier Application Environment: Extremely low VOC content (<1g/L) means minimal odour and improved air quality for installers and occupants.
- Reliable Compliant Performance: Tested to rigorous Australian Standards AS4858 and AS4654.1 ensuring effective waterproofing under tiles when correctly applied.
- Ease of Use: Single-component, ready-to-use format requires no complex mixing, simplifying the application process.
How to apply Everflex WPM:
- Prepare Surface: Ensure substrate is structurally sound, stable, clean, dry, smooth, and free of contaminants. Concrete cured min 28 days, screeds/renders min 4 days. Rectify defects.
- Detail Corners, Joints & Penetrations: Apply sealant fillet (Adheseal PU or Hi-Flex MS) to internal corners/junctions as a bond breaker. Address dynamic joints with tape systems (Elastoband/Butyl Tape). Seal around penetrations/wastes with sealant. Embed reinforcing fabric if specified/required. Follow relevant AS3740/AS4654 requirements.
- Apply Primer: Select and apply the appropriate primer (Everflex WBP for internal porous, Everflex VBS for external/timber recommended) according to its TDS. Allow primer to become touch-dry (typically 2-24 hours).
- Stir Membrane: Thoroughly stir Everflex WPM before use to ensure consistent composition. Do NOT dilute.
- Apply First Coat: Using a brush or medium nap roller, apply the first coat evenly at approx. 0.75mm Wet Film Thickness (WFT). Check thickness with a gauge. Aim for coverage of approx 0.75 L/m².
- Allow Recoat Time: Let the first coat dry until touch-dry and it can be walked on without damage (typically 2-4 hours at 25°C/50%RH, longer in cool/humid conditions). Must recoat within 24 hours.
- Apply Second Coat: Apply the second coat at a right angle to the first coat, again achieving approx. 0.75mm WFT (approx 0.75 L/m²).
- Ensure Minimum DFT: Check total Dry Film Thickness meets requirements: Minimum 1mm DFT for internal, Minimum 1.3mm DFT for external applications. Apply additional coat(s) if needed until minimum DFT is achieved.
- Cure Before Tiling: Allow the final membrane coat to cure fully before commencing tiling (approximately 48 hours at 25°C/50%RH). Protect from damage during cure.
Everflex WPM limitations:
- Must Be Tiled or Topped: Not UV resistant and not designed for long-term exposure to sunlight or weather. Must be covered with tiles, screeds, or other protective finishes.
- Application Temperature Limits: Only apply when substrate and ambient temperatures are between 10°C and 35°C.
- Requires Dry Substrate: Do not apply onto damp, wet, or contaminated surfaces. Substrate must be adequately dried and cured.
- Not for Negative Pressure: Cannot withstand water pressure from the negative side (e.g., moisture pushing from behind the wall or under the slab). Requires different treatment for rising damp.
- Not Trafficable: Not designed for foot or vehicle traffic unless protected by suitable durable finishes like tiles or specified toppings.
- Rain Sensitivity: Protect from rain during application and initial curing period until sufficiently dried.
Safety precautions when using Everflex WPM:
- Personal Protective Equipment (PPE): Although low VOC and water-based, it's recommended to wear gloves (nitrile/latex), eye protection (safety glasses), and suitable work clothing.
- Ventilation: Apply in a well-ventilated area, particularly for indoor applications.
- Handling: Avoid ingestion and prolonged skin contact. Wash hands after use. Keep container sealed when not in use.
- First Aid: Refer to the detailed First Aid instructions provided in the TDS or Safety Data Sheet (SDS). Generally involves washing skin/eyes with water if contact occurs. Seek medical advice if irritation persists.
- Clean-up: Clean tools and spills immediately with water while the product is still wet. Cured material requires mechanical removal.
- Disposal: Dispose of unused product and containers according to local council regulations.
Everflex WPM can be used on the following substrates (after correct priming):
- Concrete: Minimum 28 days cure. Sound, clean, dry. Prime (WBP Internal / VBS External recommended).
- Sand/Cement Screeds & Renders: Screeds min 3:1 ratio, cured min 4 days. Render cured min 4 days. Sound, clean, dry. Prime (WBP/VBS recommended). Consider Gripset C-Bed as alternative screed.
- Masonry: Brickwork, Hebel (aggregate blocks). Sound, clean, dry. Prime (WBP/VBS recommended).
- Cement Sheeting: Compressed Fibre Cement (CFC), Underlay, External Weatherboard, Blue Board™. Clean, dry, stable. Prime (WBP/VBS recommended).
- Plasterboard: Wet area grade plasterboard (e.g., WR Board), Villaboard™. Clean, dry. Prime (WBP recommended for internal).
- Timber Flooring: Structural Plywood Type A (PAA JAS-ANZ compliant). Must be rigid, clean, dry. Prime (VBS recommended). Check suitability for specific timber types.
- Pre-cast Concrete: Ensure release agents removed/dissipated. Clean, dry. Prime (WBP/VBS recommended).
- Note: Correct surface preparation (cleaning, drying, ensuring soundness, meeting cure times) and priming are essential for adhesion and performance.
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