What substrates does WPM 1000 bond to?

WPM 1000 bonds to concrete, render, fibre-cement, plasterboard, and primed metal. Substrates must be primed with Multiprime or P51 before application.

Is WPM 1000 suitable for external use?

Yes. WPM 1000 is a high-performance polyurethane membrane suitable for balconies, podiums, and external above-ground waterproofing under tiles or screed.

How many coats of WPM 1000 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 1000 Australian standards certified?

Yes. WPM 1000 is certified to AS4654, AS4858, and AS2904 covering external, internal wet area, and damp-proof course applications.

Can WPM 1000 be tiled over?

Yes. WPM 1000 is fully compatible with ARDEX tile adhesives and water-based liquid membranes. Allow the second coat to cure for 24 hours before tiling.

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Ardex WPM 1000

Name: Ardex WPM 1000
Brand: Ardex
SKU: AARA78
Price: 2419.95 AUD
Availability: InStock

$2,419.95

or 4 interest-free payments with

ARDEX WPM 1000 Weldable Waterproofing Membrane is a polypropylene-lined waterproofing sheet membrane specially formulated for the direct adhesion of tiled systems or for other non-exposed use. ARDEX WPM 1000 is heat-welded at laps and seams to create a superior sheet membrane with a consistent membrane thickness, that allows for quick installation.

Compliant to AS4654, AS4858 and AS2904 for damp-proof course and flashings

Flood testing, tiling or screeding can begin 1 hour after installation

BRANZ tested Class III high extensibility, no fillet or bond breaker required

Quantity: 1

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Ardex WPM 1000

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

Product Details

Polypropylene-lined construction for enhanced durability.

Suitable for direct adhesion of tiled systems or non-exposed use.

Heat-weldable at laps and seams for secure bonding.

Provides excellent waterproofing and moisture resistance.

Consistent membrane thickness for easy and quick installation.

How to Use

Bond both the sheet underside and the substrate with ARDEX WA 98 Adhesive at 4m2 - 8m2/litre, then heat weld all side and end laps at a minimum 40mm overlapRemove all dirt, dust, curing compounds, oils, grease, surface sealers and any other contaminants by mechanical methods and vacuum cleaning
Prepare the surface to leave it sound, clean, dry and free from sharp edges and loose material
Treat damaged concrete between 2mm and 30mm with ARDEX A 46, and spalling concrete with the ARDEX Concrete Repair range
Where substrate moisture is above 80% relative humidity (ASTM F2170), apply two coats of ARDEX WPM 300 HydrEpoxy at 3m2/litre per coat and allow a minimum 24 hours to dry
Fill all transition substrate gaps so the membrane is adequately supported
Detail all external corners, pipe penetrations and drainage waste outlets with ARDEX Flashing Tape cut to size and adhered with ARDEX WA 98 Adhesive
Apply a neat primer coat of ARDEX WA 98 Adhesive to the prepared substrate and allow it to dry totally
Apply a second neat coat of ARDEX WA 98 Adhesive to the primed substrate and to the sheet underside at 4m2 - 8m2/litre and bring together once tacky
Roll out the membrane, cut to the measured length and smooth on contact to minimise air entrapment
Compress the bonded portion of the sheet to the substrate with a pressure roller
Lay the membrane tightly into all corners and transitions without over-stretching it, using the ARDEX Brass Roller and ARDEX Small Hand Roller
Install all side and end laps at a minimum 40mm overlap and heat weld with an approved hot-air welding unit
Glue and heat weld the membrane to the ARDEX Flashing Tape at all detailed areas
Probe every seam and lap to confirm the weld, and re-weld where necessary
Roll the installed membrane with a weighted or large water-filled heavy roller to ensure uniform substrate adhesion
Terminate the membrane to AS 4654 using a pressure seal strip, an over-flashing or a minimum 15mm x 15mm reglet
Protect the membrane from following trades and cover it within 30 days of UV exposure

Technical Specifications

Membrane Classification: Polypropylene-lined weldable sheet membrane
Chemical Base: Vulcanised butynol rubber sheet with polypropylene fleece lining
Colour: Black
Membrane Gauge: 1.2mm
Service Temperature: -30C to 80C
Membrane Class: Class III (High Extensibility), AS/NZS 4858-2004 and AS 4654.1-2012, BRANZ Reports DC16981-08-01 and DC16981-06-1
Tensile Strength (Min): 4.74 MPa (AS 4654.1)
Elongation at Break: Greater than 300% (AS 4654.1 Appendix A)
Field Seam Strength: Shear 278 N end lap, 231 N side lap; Peel 87 N end lap, 71 N side lap (EN 12316.2, EN 12317.2)
Bond Strength: 42 N to plywood, 23 N to concrete (ASTM C794, BRANZ Report DC16981-06-1)
Heat Ageing: Pass (AS 4654.1)
Temperature Resistance: Pass (AS 4654.1 Clause 2.6)
Durability: Pass (AS 4654.1 Table A4)
Tear Die: 26.5 kN/m (min), ASTM D624
Tensile Retained: 70% (min), ASTM D412
UV Resistance: Pass, no visible cracks (AS 4654.1 Table A)
Water Vapour Transmission: 0.62 g/m2/24 hours (ASTM E96)
Damp-proof Course and Flashings: Compliant to AS2904 (Bureau Veritas Report 10513314-Metal-1)
Minimum Lap: 40mm side and end laps, heat welded
Substrate Adhesive: ARDEX WA 98 Adhesive at 4m2 - 8m2/litre
Tiling, Screeding or Flood Testing: May commence 1 hour after membrane installation
Maximum UV Exposure: 30 days for direct tiling and screed applications
Roll Size: 1.4m wide x 20m long
Roll Weight: Approximately 35kg
Storage: Indefinite shelf life stored between 5C and 30C
Hazard Classification: Non-hazardous chemical, non-dangerous goods (SDS)

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Ardex WPM 1000

$2,419.95

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Technical overview

ARDEX WPM 1000 is a polypropylene-lined weldable sheet waterproofing membrane, 1.2mm gauge, formulated for the direct adhesion of tiled or screed systems and for use under decking and paver pedestal systems. It is bonded to the substrate with ARDEX WA 98 Adhesive and heat welded at all laps and seams with a minimum 40mm overlap. It is compliant to AS4654 and AS4858, and to AS2904 for damp-proof course and flashings. BRANZ tested it to AS 4654.1-2012 (Report DC16981-06-1) and to AS/NZS 4858-2004 (Report DC16981-08-01), and in both it met the requirements to be classified Class III High Extensibility. AS2904 compliance was assessed by Bureau Veritas, Report 10513314-Metal-1. Application must be carried out by an ARDEX Accredited Applicator.

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Key applications

Direct adhesion of tiled or screed systems
Undertile waterproofing
Under decking and paver pedestal applications
Damp-proof course and flashings to AS2904
External above-ground waterproofing to AS4654
Transitions to ARDEX water-based liquid applied membranes using ARDEX STB Tape

Surface suitability

Concrete (sound, clean, dry and free from sharp edges; damaged concrete 2mm - 30mm treated with ARDEX A 46)
Screed (bonded with ARDEX WA 98 Adhesive)
Masonry (bonded with ARDEX WA 98 Adhesive)
Plywood (bonded with ARDEX WA 98 Adhesive)
CFC sheet (bonded with ARDEX WA 98 Adhesive)
Some PVC types (confirm with ARDEX Technical Services)
Damp or green concrete above 80% relative humidity (ASTM F2170) primed with two coats of ARDEX WPM 300 HydrEpoxy at 3m2/litre per coat

The application of ARDEX WPM 1000 must be carried out by an ARDEX Accredited Applicator. The membrane is not suitable as a trafficable surface. For direct tiling and screed applications it must not be exposed to UV greater than 30 days, and suitable protection must be provided if tiling or screeding is delayed, as UV may damage the polypropylene-lined fleece component. Do not apply any ARDEX Engineered Screed products directly to ARDEX WPM 1000. Do not use a medium or hard bristle broom, as this may partially remove the polypropylene fleece. ARDEX WA 98 Adhesive is for external use only, and must not be applied over any area that will later be spliced or seamed, as glued laps and seams cannot be welded. Store rolls horizontally between 5C and 30C, out of direct sunlight and away from ignition sources and open flame. Use appropriate PPE.

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Technical Specifications

Membrane Classification	Polypropylene-lined weldable sheet membrane
Chemical Base	Vulcanised butynol rubber sheet with polypropylene fleece lining
Colour	Black
Membrane Gauge	1.2mm
Service Temperature	-30C to 80C
Membrane Class	Class III (High Extensibility), AS/NZS 4858-2004 and AS 4654.1-2012, BRANZ Reports DC16981-08-01 and DC16981-06-1
Tensile Strength (Min)	4.74 MPa (AS 4654.1)
Elongation at Break	Greater than 300% (AS 4654.1 Appendix A)
Field Seam Strength	Shear 278 N end lap, 231 N side lap; Peel 87 N end lap, 71 N side lap (EN 12316.2, EN 12317.2)
Bond Strength	42 N to plywood, 23 N to concrete (ASTM C794, BRANZ Report DC16981-06-1)
Heat Ageing	Pass (AS 4654.1)
Temperature Resistance	Pass (AS 4654.1 Clause 2.6)
Durability	Pass (AS 4654.1 Table A4)
Tear Die	26.5 kN/m (min), ASTM D624
Tensile Retained	70% (min), ASTM D412
UV Resistance	Pass, no visible cracks (AS 4654.1 Table A)
Water Vapour Transmission	0.62 g/m2/24 hours (ASTM E96)
Damp-proof Course and Flashings	Compliant to AS2904 (Bureau Veritas Report 10513314-Metal-1)
Minimum Lap	40mm side and end laps, heat welded
Substrate Adhesive	ARDEX WA 98 Adhesive at 4m2 - 8m2/litre
Tiling, Screeding or Flood Testing	May commence 1 hour after membrane installation
Maximum UV Exposure	30 days for direct tiling and screed applications
Roll Size	1.4m wide x 20m long
Roll Weight	Approximately 35kg
Storage	Indefinite shelf life stored between 5C and 30C
Hazard Classification	Non-hazardous chemical, non-dangerous goods (SDS)

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Frequently asked questions

View all FAQs

What substrates does WPM 1000 bond to?

Compatibility
WPM 1000 bonds to concrete, render, fibre-cement, plasterboard, and primed metal. Substrates must be primed with Multiprime or P51 before application.
Is WPM 1000 suitable for external use?

Performance
Yes. WPM 1000 is a high-performance polyurethane membrane suitable for balconies, podiums, and external above-ground waterproofing under tiles or screed.
How many coats of WPM 1000 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 1000 Australian standards certified?

Compliance
Yes. WPM 1000 is certified to AS4654, AS4858, and AS2904 covering external, internal wet area, and damp-proof course applications.
Can WPM 1000 be tiled over?

Compatibility
Yes. WPM 1000 is fully compatible with ARDEX tile adhesives and water-based liquid membranes. Allow the second coat to cure for 24 hours 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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