Everflex WPM - Undertile Waterproofing Membrane

Everflex WPM is a premium, single-component, self-reinforced elastomeric waterproofing membrane specifically designed for under-tile applications. This Class 3 waterproof membrane offers a durable, flexible, and seamless barrier against water ingress, meeting the requirements of the National Construction Code (NCC) and Australian Standards AS 4858:2004 and AS 4654.1. Everflex WPM is non-toxic, low VOC, and easy to apply, making it an ideal choice for both internal and external wet areas.

Key Features

• Single-component, ready-to-use formula
• Rapid drying for faster tiling
• Non-toxic and low VOC, meeting Green Star environmental criteria
• Water-based for easy clean-up
• Inhibits mould and biological growth
• Compatible with all common building materials
• Tested to AS 4858:2004 and AS 4654.1
• High permanent flexibility (Class III)
• Low permeability suitable for timber floors
• Micro fibre reinforced
• Does not re-emulsify after curing
• Tough and durable
• Suitable for internal and external applications

Suitable Substrates

• Concrete (cured for at least 28 days)
• 3:1 sand cement screed or C-Bed
• Masonry/render (cured for at least 4 days)
• Cement sheeting, underlay, external weatherboard, blue board
• Pre-cast concrete (after release agent removal)
• Wet area plasterboard/Villaboard
• Timber flooring including structural plywood Type A (PAA JAS-ANZ)
• Brickwork, Hebel (aggregate block)

Comaptible Primer Application:

Everflex VBS:

Mix at a 1:1 ratio and apply the primer to porous surfaces at a rate of 5 square meters per litre per coat, ensuring the achievement of a plastic film. Additional coats may be necessary if a plastic film is not achieved.

Everflex WBP:

For internal applications, apply the water-based primer to porous surfaces at a rate of no less than 6 square meters per litre. Allow it to dry before coating with the membrane.

Everflex SBP:

For more difficult surfaces like PVC and waxy surfaces, apply the solvent-based primer at a rate of no less than 9 square meters per litre. Allow it to dry before applying the membrane.

Joints and Internal Corners:

Apply a fillet of Adheseal PU, MS, or a suitable bond breaker in internal corners and over sheet joints according to the relevant Australian Standard. If required, embed polyester reinforcing fabric in the first coat of membrane, ensuring complete wet-out.

Coverage:

• Internal: Apply a minimum of two coats to achieve a dry film thickness (DFT) of 0.9mm, in accordance with AS:3740 Class 3 Membranes.
• External: Apply a minimum of two coats to achieve a DFT of 1mm, in accordance with AS:4654.2 Class 2 Membranes.
• Apply the second coat at right angles to the first coat. Additional coats may be required to achieve the minimum DFT.

Tile Adhesives:

Everflex WPM is compatible with various types of solvent-free tile adhesives. Successful installations have been carried out using Mastic and Unigrip adhesives over Everflex Aqua-Ban. Confirm adherence with the relevant adhesive manufacturer.