AquaflexWPU WPU
Ready-to-use quick drying and flexible Class III water-based hybrid polyurethane membrane for internal and external waterproofing applications
WHERE TO USE
Aquaflex WPU can be used on the following:
• Concrete, screed, render and masonary surfaces, fibre cement sheeting, wet area rated plasterboard and timber sheeting.
• For further information on suitable surfaces and substrates please contact Mapei Technical Services on Freecall 1800 652666. Some application examples
• Internal wet areas, bathrooms, laundries and other tiled areas;
• Balconies, decks, podiums and terraces;
• Roofs, as an exposed membrane finish (light pedestrian traffic). Parapets and external areas exposed to constant weather;
• Roofs to be covered by screeds or toppings including tiles.
ADVANTAGES
• Highly flexible and elastic;
• Excellent adhesion;
• Solvent free, non-hazardous;
• Excellent UV / weather resistant properties;
• Non re-emulsifying;
• Resistant to algal growth.
TECHNICAL CHARACTERISTICS
Aquaflex WPU is a versatile ready-to-use, solvent-free, single component, water-based hybrid polyurethane membrane.
Aquaflex WPU has a thixotropic consistency that makes it easy to apply on horizontal and vertical surfaces for both interior and exterior applications.
Aquaflex WPU cures to form a highly flexible Class III membrane with excellent adhesion properties.
Aquaflex WPU complies with AS4858:2004 and AS4654.1:2012.
Aquaflex WPU cures to a tack-free finish and permits light pedestrian service traffic. Aquaflex WPU provides excellent direct adhesion with Mapei’s range of tile adhesives.
The over 400% elongation of Aquaflex WPU enables it to withstand normal expansion and contraction movements of the substrate due to temperature variations and vibrations.
Aquaflex WPU is resistant to limewater (pH> 12), water which contains mild chlorides and normal household detergents and cleaning products.
RECOMMENDATIONS
• DO NOT apply Aquaflex WPU if the temperature is lower than +5°C or above +35°C
• Aquaflex WPU should always be applied with a stable or falling ambient temperature.
• Always create sloping surfaces to drains where necessary to avoid the formation of water ponding.
• DO NOT apply Aquaflex WPU on damp cementitious substrates without first priming with Planiseal MR
• DO NOT apply Aquaflex WPU on bitumen or asphalt
AquaflexWPU WPU
MapegumWPS
TECHNICAL DATA (typical values)
membranes without firstly applying Primer for Aquaflex
• DO NOT use Aquaflex WPU to cover cracks.
PRODUCT IDENTITY
• DO NOT apply Aquaflex WPU on crumbly cementitious substrates, old floors which are not well bonded to the substrate or surface treatments which impede a good bond.
Consistency: paste
Colour: light grey
• Aquaflex WPU is suitable for light service foot traffic however it must be protected from abrasion caused by heavier traffic by installing ceramic tiles or other forms of protection.
Density (g/cm³): 1.45 9.0
Dry solids content (%): 75
APPLICATION PROCEDURE
Preparation of the substrate
Brookfield viscosity (mPa·s): 130,000 (rotor E - 5 revs)
Internal wet area installation must comply with the minimum requirements of AS 3740-2010. External installations must comply with the minimum requirements of AS 4654.2-2012.
Minimum film-forming temperature: +5°C
Application temperature range: from +5°C to +35°C
Substrates must be well-cured, sound, clean, dry and free of oil, grease, cement laitance, old paint and any other substance which could compromise the bond.
1mm. This equates to 750 microns (0.75mm) wet film thickness (WFT) per coat. Wait until the first coat is dry before applying the second coat diagonally to the first (approximately 2-4 hours at 23°C and 50% relative humidity. Note that low temperatures and/or high humidity can extend dry times). For roof and exposed applications 3 coats are required to achieve a DFT of at least 1.3mm. Make sure there are no interruptions in the film caused by imperfections in the substrate. If Aquaflex WPU is applied to form an antifracture membrane on cracked substrates, we recommend inserting Mapetex Sel or Mapetex 50 reinforcement into the first coat while it is still fresh, avoiding air bubbles or voids. Wait until the first coat is dry then apply the second coat in order to completely embed Mapetex reinforcement. Drying times may increase as Mapetex insertion increases the final thickness of the applied film.
Completely dry (2 mm of thickness) at +23°C: 5 hours
Completely dry (2 mm of thickness) at +5°C: 12 hours
Smoothing and levelling layers may be applied using Planitop Fast 330 or Adesilex P4
Waiting time before laying coating material: 12-24 hours
FINAL PERFORMANCES
Expansion joints and junctions (e.g. floorwall, wall-wall) can be locations of movement and as such, require special preparation. Mapei’s highly flexible polymer band products Mapeband and Mapeband SA (self adhesive) have been developed to provide rapid installation and dependable in-service performance for treatment of these areas. Alternatively, for internal junction applications, a sealant bond breaker system can be used with Mapeflex PU 45 FT, in accordance with AS3740. Refer to specific datasheets for installation details.
Resistance to temperature variations: excellent
Resistance to ageing: excellent
Resistance to solvents and oil: good
Resistance to acids and alkalis: good
Elongation at breakage (DIN 53504) (%): 180
In service temperature range: from -30°C to +100°C
Water absorption (%) (by weight) 7 days at +23°C + 21 days immersed in water: 10 (Standard UNI 8202/22a)
Structural joints must be waterproofed with Mapeband TPE bonded to the substrate with Adesilex PG4.
Vapour permeability (µ): 650 (Standard UNI 8202/23a)
Aquaflex WPU does not require the use of a primer on properly prepared substrates with the following exceptions:
• For excessively porous substrates use Planiseal MR or Primer 3296 to seal the surface.
Acceptable limits according to EN 14891
In bathrooms, on balconies or in saunas, a water-tightness test may be carried out 72 hours after applying the final coat of Aquaflex WPU. Ceramic, stone and mosaic tiles may be installed 24 - 48 hours after applying the final coat (at +23°C and 50% relative humidity) using a C2-class MAPEI adhesive according to ISO 13007 standards, to be selected according to the final use of the floor or coating. For example, on balconies use Keraflex Maxi S1 (Class C2TE S1). For the rapid installation of tiles use Granirapid (Class C2F S1) and for laying all types of mosaic use Kerabond Plus + Isolastic 50 (Class C2T S1). Grout tile joints with a special cementitious grout such as Ultracolor Plus, Keracolor FF, Keracolor GG mixed with Fugolastic) or epoxy grout such as Kerapoxy or Kerapoxy Design . Seal expansion joints with a special MAPEI sealant (such as Mapesil AC , Mapeflex PU40 or Mapeflex PU45FT according to requirements). Before installing the tiles, carefully check the surface of Aquaflex WPU to make sure it is continuous and that there are no pin-holes or small craters. If there are such defects, apply a further coat where they are located.
Performance figures for Mapegum WPS
Impermeability to water under pressure: according to EN 14891-A.7 (1.5 bar of positive lift for 7 days): no penetration no penetration
Crack-bridging ability at +20°C according to EN 14891-A.8.2 (mm):
• Metal and PVC fittings and trims must be primed with Eco Prim Grip to provide a good bond.
Initial bond strength according to EN 14891-A.6.2 (N/mm²):
• For damp substrates and rooftop applications prime with Planiseal MR
Cleaning
Aquaflex WPU may be easily removed while still fresh from tools and surfaces with water. Once hardened, it can only be mechanically removed.
CONSUMPTION
Bond strength after immersion in water according to EN 14891-A.6.3 (N/mm²):
• Existing substrates of ceramic tiles or natural stone must be primed with Eco Prim Grip.
Bond strength after application of heat source according to EN 14891-A.6.5 (N/mm²):
The consumption of Aquaflex WPU is approximately 750ml / m2 / coat or 1.5 ltr/m2 per mm of thickness.
1 x 15 litre pail will cover 10m2 @ 1mm DFT (2 coats)
• Anhydrite or gypsum substrates must be perfectly dry (maximum residual humidity 0.5%), sanded and treated with a coat of Primer G
Bond strength after freeze-thaw cycles according to EN 14891-A.6.6 (N/mm²):
APPLICATION OF THE PRODUCT
Bond strength after immersion in basic water according to EN 14891-A.6.9
For exposed flat roof applications it is recommended to apply 3 coats to achieve a 1.3mm DFT.
1 x 15 litre pail will cover 7.5m2 @ 1.3mm DFT (3 coats)
PACKAGING
Bond values according to EN 14891 measured using Mapegum WPS and C2 type cementitious adhesive according to EN
Aquaflex WPU can be applied by brush or roller. It must be applied in two even coats to achieve a final dry film thickness (DFT) of
Aquaflex WPU is available in 15 litre buckets.
TECHNICAL DATA (typical values)
• Do not apply Mapegum WPS on damp cementitious substrates or on substrates which are subject to rising damp.
• Do not apply Mapegum WPS on bitumen or asphalt membranes which could bleed oil or plasticisers.
• Do not use Mapegum WPS to cover cracks which are subject to shearing movements.
FINAL PERFORMANCES
• Mapegum WPS must be protected from abrasion caused by pedestrian traffic by installing ceramic tiles or stone material.
Resistance to ageing – (ISO 105-A02 Grey Scale Test)
APPLICATION PROCEDURE
Preparation of the substrate
Substrates must be solid, clean, dry and free of oil, grease, old paintwork or any other material which could compromise bonding. Thoroughly clean all the mould, loose material etc. from existing surfaces to be waterproofed (existing flooring, old bitumen membranes, asphalt, metallic surfaces, etc.) by washing and brushing them down, or by spraying water and steam.
Cementitious substrates must be stable and dry, and not subject to rising damp.
Substrates which are highly absorbent or gypsum must be pre-treated with Primer G (usually diluted with water at a ratio of 1:1 or 1:2 to ensure thorough penetration). Wait several hours until the coating of Primer G is completely dry.
coats (approx. 1 mm maximum per coat). Wait until the first coat is dry before applying further coats crossways (1-2 hours according to temperature conditions). The final thickness of Mapegum WPS must never be less than 1 mm, in order to form a consistent, flexible continuous coat. Make sure that there are no gaps caused by imperfections in the substrate. Mapegum WPS is used as an anti-fracture membrane on cracked substrates, we recommend inserting a layer of 4.5x4 mm Mapenet 150 in the first layer of fresh Mapegum WPS to act as a reinforcement (refer to the Mapenet 150 Technical Data Sheet). To further improve both elongation at failure and crack-bridging of Mapegum WPS, we recommend inserting Mapetex Sel large-mesh non-woven polypropylene fabric (refer to the Mapetex Sel Technical Data Sheet).
After 12-24 hours from applying the final coat of Mapegum WPS (according to temperature conditions), the surface is ready for laying ceramic tiles or natural stone etc. Use an adhesive from the MAPEI range to lay ceramic tiles and natural stone; class C2 if it is cementitious based or class D2TE if it is a water dispersion type, in accordance with Standard EN 12004.
In order to guarantee continuity in the waterproofing coat, we recommend placing Mapeband, alkali-resistant rubber tape with felt, between the wall and the floor and between contiguous walls before applying Mapegum WPS. Special Mapeband or Mapeband PE 120 pieces are available to be inserted in correspondence of corners, drains and pipe-work.
- Class III
Mapeband or Mapeband PE 120 must be bonded to the substrate using Mapegum WPS and must be completely embedded in the waterproofing layers.
Laying the tiles
After applying Mapegum WPS wait:
• 12-24 hours on absorbent substrates;
• 4-5 days on substrates which are not absorbent.
Lay the tiles using an adhesive from the MAPEI range (such as Keraquick, Granirapid, Adesilex P9, Keraflex or Ultramastic III); the width of the joints depends on the size of the tiles to be laid. Grout the tile joints using Ultracolor Plus, Keracolor FF or GG plus Fugolastic or Kerapoxy, available in a variety of colours. Expansion joints must be sealed using the special MAPEI sealants.
STORAGE
Anhydrite or gypsum substrates must be perfectly dry (maximum residual humidity 0.5%), sanded and treated with a coat of Primer G or Primer S. Existing substrates of ceramic tiles or natural stone must be treated with Mapeprim SP primer before applying Mapegum WPS
Cleaning
Aquaflex WPU may be stored for up to 24 months in its original packaging in a dry place. Protect from frost.
If a slope has to be created and the base needs to be smoothed off before spreading on Mapegum WPS, use one of the recommended MAPEI products.
Application of the product
SAFETY INSTRUCTIONS FOR PREPARATION AND APPLICATION
Mapegum WPS may be applied by trowel, with a roller, by brush or spray (if required, dilute with up to 5% of water).
The product must be applied evenly in thin
Aquaflex WPU is not considered hazardous according to current norms and guidelines regarding the classification of mixtures. It is
recommended to use protective gloves and goggles and to take the usual precautions for handling chemicals.
Mapegum WPS may be easily removed while still fresh from tools and surfaces with water.
CONSUMPTION
The consumption of Mapegum WPS is approximately 1.5 kg/m² per mm of thickness.
PACKAGING
For further and complete information about the safe use of our product please refer to the latest version of our Safety Data Sheet available from our website at www.mapei.com.au.
End result of a waterproofing treatment using Aquaflex WPU and Mapeband
Mapegum WPS is available in 5, 10 and 25 kg drums.
PRODUCT FOR PROFESSIONAL USE.
Mapegum WPS
Mapegum WPS and
