Where is WPM 750 used?

WPM 750 is a single-pack polyurethane waterproofing membrane suitable for balconies, podiums, planter boxes, and external above-ground applications under tiles, screed, or pavers.

Is WPM 750 UV stable?

WPM 750 is intended to be covered with tiles or a protective top coat. For permanently exposed applications, overcoat with WPM 822 or WPM 823.

How many coats are needed?

Apply two coats at 90 degrees to each other to achieve minimum 1.0mm dry film thickness. Reinforce corners and penetrations with ARDEX reinforcing fabric.

Is WPM 750 standards-compliant?

Yes. WPM 750 is certified to AS4858 and compatible with the full ARDEX waterproofing and tiling system.

Can WPM 750 be tiled over?

Yes. WPM 750 is fully compatible with ARDEX tile adhesives and liquid membranes. Allow 24 hours cure before tiling.

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Ardex WPM 750

Name: Ardex WPM 750
Brand: Ardex
SKU: AARA132
Price: 1745.90 AUD
Availability: InStock

$1,745.90

or 4 interest-free payments with

ARDEX WPM 750 is a high-performance, fleece-lined waterproofing sheet membrane that is specifically designed for seamless adhesion to tiled surfaces. With its exceptional formulation, this membrane offers superior durability and flexibility, ensuring long-lasting protection against water damage. The heat-welding technique employed during installation guarantees a strong bond, consistent thickness, and swift application process.

Heat welded laps and seams, no fillet or bond breaker required

Flood test, tile or screed 1 hour after installation is complete

Class III (High Extensibility) to AS/NZS 4858:2004, BRANZ Report DC13305-011-2

Quantity: 1

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Ardex WPM 750

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

Product Details

Advantages:

Fleece-lined design provides added strength and reinforcement

Heat-welded laps and seams offer enhanced adhesion and quick installation

Excellent flexibility prevents cracking, tearing, bubbling, and absorption issues

Superior durability ensures long-term waterproofing performance

Specifically formulated for direct adhesion to tiled surfaces

Applications:

Bathrooms, showers, and wet areas

Balconies and terraces

Swimming pools and spas

Commercial and residential projects requiring waterproofing under tiles

ARDEX WPM 750 is the ideal solution for achieving reliable and robust waterproofing beneath tiled surfaces. Its advanced features and versatility make it the top choice for both professional contractors and DIY enthusiasts alike. Ensure your projects are protected with ARDEX WPM 750.

How to Use

Bond with ARDEX CA 750 applied by brush or roller to both the sheet underside and the substrate at 10m2 per litre, then heat weld all laps at a minimum 40mm overlapRemove all dirt, dust, curing compounds, oils, grease, surface sealers and other contaminants by mechanical methods and vacuum cleaning
Leave the surface sound, clean, dry, uniform and free from sharp edges and loose material
Cure new concrete for a minimum of 28 days and remove all surface protrusions before membrane installation
Treat damaged concrete between 2mm and 30mm with ARDEX A 46, and spalling concrete with the ARDEX Concrete Repair range such as ARDEX BR 345
Install ARDEX STB/STA Tape to seal surface joints, drainage PVC pipe outlets and other penetrations, rollered with the ARDEX Brass Roller and ARDEX Small Hand Roller
Apply ARDEX CA 750 by brush or roller to both the sheet underside and the prepared substrate at 10m2 per litre and allow approximately the same drying time before embedding
Keep ARDEX CA 750 off any area that will later be heat welded to another sheet or flashing
Roll out ARDEX WPM 750, cut to the measured length and smooth on contact to minimise air entrapment beneath the membrane
Compress the bonded portion of the sheet to the substrate with a pressure roller
Extend floor sheets at least 150mm up the wall above the finished floor height, with all transition substrate gaps filled to support the membrane
Lay the membrane tightly into all corners and transitions without over-stretching it
Overlap wall sheets onto the 150mm floor upturn and heat weld by a minimum 40mm
Take the wall membrane 1800mm above finished floor height, or to a minimum 50mm above the shower rose
Heat weld all side and end laps at a minimum 40mm overlap using an approved hot-air welding unit
Probe every seam and lap to confirm the weld and re-weld where necessary
Heat weld the membrane to the ARDEX STB/STA Tape to create a seamless system within and around critical areas
Commence flood testing, tiling or screeding 1 hour after the membrane system is fully installed

Technical Specifications

Membrane Classification: Internal undertile sheet membrane, compliant to AS/NZS 4858; Class III (High Extensibility), BRANZ Report DC13305-011-2
Construction: Fleece-lined waterproofing sheet membrane, heat-welded at laps and seams
Membrane Gauge: 0.75mm
Roll Size: 1.4m wide x 20m long
Weight per Roll: Approximately 16kg
Tensile Strength: 5.0 MPa minimum (ASTM D412)
Elongation at Break: Greater than 300% (AS/NZS 4858)
Tear Die: 26.5 kN/m minimum (ASTM D624)
Hardness: 70 +/- 5 IRHD (ASTM D1415)
Tensile Retained: 70% minimum (ASTM D412)
Cyclic Movement: Pass, no fatigue exhibited (AS/NZS 4858)
Service Temperature: -30C to 80C
Water Vapour Transmission: 0.21 g/m2/24 hours (ASTM E96)
Water Absorption: 1.88% maximum (AS3558.1)
Elongation after deionised water, bleach and detergent immersion (56 days): Pass (AS/NZS 4858)
Minimum Lap: 40mm side and end laps, heat welded with an approved hot-air welding unit
Minimum Floor to Wall Upturn: 150mm above finished floor height
Wall Membrane Height: 1800mm above finished floor height, or minimum 50mm above the shower rose
Bonding Adhesive: ARDEX CA 750 applied by brush or roller to both faces at 10 m2 per litre
Flood Testing, Tiling or Screeding: From 1 hour after the membrane system is fully installed
Installer Requirement: Must be installed by an ARDEX Accredited Applicator
Shelf Life: Indefinite when stored between 5C and 30C, rolls stored horizontally out of direct sunlight
Hazard Classification: Non-Hazardous Chemical, Non-Dangerous Goods

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Technical overview

ARDEX WPM 750 is a fleece-lined waterproofing sheet membrane designed for the direct adhesion of tiles and screeds within internal wet areas such as showers and bathrooms. It is bonded with ARDEX CA 750 water-based contact adhesive and heat-welded at the laps and seams to create a sheet membrane of consistent thickness, with a minimum 40mm overlap and no fillet or bond breaker required. The TDS states it is compliant to AS/NZS 4858, and BRANZ tested the membrane to AS/NZS 4858:2004 (Report DC13305-011-2) and classified it Class III (High Extensibility). Application must be carried out by an ARDEX Accredited Applicator.

View full technical data sheet

Key applications

Waterproofing internal wet areas such as showers and bathrooms
Directly under adhered tiled applications
Directly under screed applications
Wall waterproofing 1800mm above finished floor height or 50mm above the shower rose
Floors with electric underfloor heating encapsulated in an ARDEX screed or levelling compound
Transitions to ARDEX WPM 002, ARDEX WPM 155 Rapid Plus and ARDEX WPM 130 Builders Express

Surface suitability

Screed
Concrete (new concrete cured for a minimum of 28 days)
Masonry
Plywood
CFC sheet
Paper-faced plasterboard
Light weight fibre cement tongue and groove internal flooring sheets (refer to the ARDEX Technical Bulletin or ARDEX Technical Services)
Electric underfloor heating (wires encapsulated with an appropriate ARDEX screed or levelling compound under the membrane)

The application of ARDEX WPM 750 must be carried out by an ARDEX Accredited Applicator. The membrane is not suitable as a trafficable surface or to be left UV exposed for long periods of time. Do not apply any ARDEX engineered screeds directly to ARDEX WPM 750. Do not apply ARDEX CA 750 over any area that will later be heat welded to another sheet or flashing, as glued laps and seams cannot be welded. Do not lay reinforcing mesh directly onto the membrane, it must be installed between the screed layers. It is the responsibility of the main building contractor to make all sub-trades aware the membrane has been installed and to protect it from damage. Rolls must be stored horizontally, out of direct sunlight, away from sources of puncture and physical damage, and away from ignition sources and open flame.

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Technical Specifications

Membrane Classification	Internal undertile sheet membrane, compliant to AS/NZS 4858; Class III (High Extensibility), BRANZ Report DC13305-011-2
Construction	Fleece-lined waterproofing sheet membrane, heat-welded at laps and seams
Membrane Gauge	0.75mm
Roll Size	1.4m wide x 20m long
Weight per Roll	Approximately 16kg
Tensile Strength	5.0 MPa minimum (ASTM D412)
Elongation at Break	Greater than 300% (AS/NZS 4858)
Tear Die	26.5 kN/m minimum (ASTM D624)
Hardness	70 +/- 5 IRHD (ASTM D1415)
Tensile Retained	70% minimum (ASTM D412)
Cyclic Movement	Pass, no fatigue exhibited (AS/NZS 4858)
Service Temperature	-30C to 80C
Water Vapour Transmission	0.21 g/m2/24 hours (ASTM E96)
Water Absorption	1.88% maximum (AS3558.1)
Elongation after deionised water, bleach and detergent immersion (56 days)	Pass (AS/NZS 4858)
Minimum Lap	40mm side and end laps, heat welded with an approved hot-air welding unit
Minimum Floor to Wall Upturn	150mm above finished floor height
Wall Membrane Height	1800mm above finished floor height, or minimum 50mm above the shower rose
Bonding Adhesive	ARDEX CA 750 applied by brush or roller to both faces at 10 m2 per litre
Flood Testing, Tiling or Screeding	From 1 hour after the membrane system is fully installed
Installer Requirement	Must be installed by an ARDEX Accredited Applicator
Shelf Life	Indefinite when stored between 5C and 30C, rolls stored horizontally out of direct sunlight
Hazard Classification	Non-Hazardous Chemical, Non-Dangerous Goods

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Frequently asked questions

View all FAQs

Where is WPM 750 used?

Compatibility
WPM 750 is a single-pack polyurethane waterproofing membrane suitable for balconies, podiums, planter boxes, and external above-ground applications under tiles, screed, or pavers.
Is WPM 750 UV stable?

Performance
WPM 750 is intended to be covered with tiles or a protective top coat. For permanently exposed applications, overcoat with WPM 822 or WPM 823.
How many coats are needed?

Installation
Apply two coats at 90 degrees to each other to achieve minimum 1.0mm dry film thickness. Reinforce corners and penetrations with ARDEX reinforcing fabric.
Is WPM 750 standards-compliant?

Compliance
Yes. WPM 750 is certified to AS4858 and compatible with the full ARDEX waterproofing and tiling system.
Can WPM 750 be tiled over?

Compatibility
Yes. WPM 750 is fully compatible with ARDEX tile adhesives and liquid membranes. Allow 24 hours cure before tiling.

Why trade professionals choose Ardex

Ardex is a global leader in high-performance building products, trusted by Australian trade professionals. The range spans liquid and sheet waterproofing membranes, primers, sealers, screeds and repair systems, engineered for lasting results on residential and commercial projects.

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