ACTFLEX 906 WPU Waterbase Polyurethane
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ACTFLEX 906 WPU Waterbase Polyurethane

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ACTFLEX 906 WPU is a Class III water-based membrane, free of solvents, engineered with modified polyurethane for both internal and external applications underneath
tiles or toppings. It stands as a singular component, boasting remarkable flexibility and high build properties. This waterproofing solution exhibits exceptional weather
resistance, emitting low VOC levels, and bearing a Non-Hazardous classification. ACTFLEX 906 WPU aligns with the mandates of AS3740:2021 through its adherence to
AS/NZ 4858 and AS4654.2 2012, further reinforcing its suitability and performance standards.

Water-based polyurethane with excellent flexibility Water-based polyurethane with excellent flexibility
Class III certified for internal & external wet areas Class III certified for internal & external wet areas
Ready-to-use single component, no mixing required Ready-to-use single component, no mixing required
Size: 20 KG
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Pickup available at The Waterproofing Shop

Usually ready in 24 hours

ACTFLEX 906 WPU Waterbase Polyurethane

ACTFLEX 906 WPU Waterbase Polyurethane

20 KG

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517
ACTFLEX 906 WPU Waterbase Polyurethane20 KG
$166.00
Add it to your kit

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High performance negative pressure waterproofing for below ground structures.

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Tank Waterproofing System

Potable water safe. Ideal for concrete water tanks and reservoirs.

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System Build-Up Guide

Correct application makes all the difference.

View All Details

Pool System Build-Up

  • 1 Concrete Substrate
  • 2 Crack Repair (if required)
  • 3 ACTFLEX FLEXPLUS
  • 4 ACTFLEX HYDROPLUG
  • 5 ACTFLEX AT MESH
  • 6 ACTFLEX 988 CWP (2 Coats)
  • 7 Tile Adhesive
  • 8 Pool Finish
Pool System Build-Up

Retaining Wall System Build-Up

  • 1 Concrete Substrate
  • 2 Crack Repair (if required)
  • 3 ACTFLEX MS PRO
  • 4 ACTFLEX AT MESH
  • 5 ACTFLEX 988 CWP (2 Coats)
  • 6 Protection Board (Optional)
  • 7 Drainage System
  • 8 Backfill
Retaining Wall System Build-Up

Tank System Build-Up

  • 1 Concrete Substrate
  • 2 Crack Repair (if required)
  • 3 ACTFLEX FLEXPLUS
  • 4 ACTFLEX AT MESH
  • 5 ACTFLEX 988 WMP (2 Coats)
  • 6 Protective Coating (Optional)
  • 7 Water
Tank System Build-Up

Technical overview

ACTFLEX 906 WPU is a Class III water-based, single-component polyurethane-modified waterproofing membrane designed for internal and external applications under tiles or screed. Solvent-free, low VOC and classified non-hazardous. Highly flexible with excellent build properties on horizontal and vertical surfaces. Compliant with AS3740:2021, AS/NZS 4858 and AS4654.1:2012.
Product Type Single-component, water-based polyurethane-modified
Classification Class III waterproofing membrane
Colour Grey
Chemical Base Water-based polyurethane-modified polymer
Solid Contents 73% ± 2%
Elongation at Break >500%
Tear Propagation Resistance No fatigue cracking – Pass
Chemical Resistance Good resistance to mild acids, alkalis, and environmental weathering
Cure Mechanism Water evaporation
Touch Dry Time (Tack Free) 6 hours @ 25°C / 50% RH
Recoat Time 6 hours @ 25°C, 50% RH
Full Cure 3 days @ 25°C, 50% RH
Waterproof Time 72 hours after final coat (full cure)
Application Temperature 10°C–26°C
Recommended Thickness - Walls 1.2 mm DFT (2 coats)
Recommended Thickness - Floors 1.2 mm DFT (2 coats)
Coverage 8–10 m² per 15L pail @ 1.2 mm DFT (two coats)
Shelf Life 12 months
Compliance Standards AS3740:2021, AS/NZS 4858, AS4654.1:2012
Available Sizes 5 Kg / 20 Kg

Key applications

  • Internal wet areas
  • External wet areas
  • Under-tile waterproofing
  • Concrete surfaces
  • Facades and parapet walls
  • Podiums
  • Rendered surfaces
  • Exposed roof areas (requires UV top-coat — ACTFLEX ATC or ACTFLEX ULTRA FC)

Surface suitability

  • Concrete (cured 28+ days, wood-trowel finish)
  • Renders & screeds (cured 7+ days, wood-trowel finish)
  • Fibre cement sheets — walls (min. 6mm, wet area grade)
  • Compressed fibre cement (min. 15mm, wet area grade)
  • Brickwork, blockwork & masonry
  • Asbestos, sycon & cement surfaces
  • Timber, metal & PVC surfaces

UV resistant only up to 6 months — use ACTFLEX 101 UV for prolonged sun exposure. Not recommended for planter boxes (use ACTFLEX 929 SPU). Not for constantly submerged applications (pools, ponds) or chlorine environments. Not a vapour barrier; not for negative-side pressure. Not compatible with silicon-based or bitumen surfaces.

Calculate your coverage

You will need:

ACTFLEX 906 WPU Waterbase Polyurethane

ACTFLEX 906 WPU Waterbase Polyurethane

20kg Kit

0 Kits

Total coverage: 0 m²

This is an estimate only. Add 10% for wastage.

Technical Specifications

Product TypeSingle-component, water-based polyurethane-modified
ClassificationClass III waterproofing membrane
ColourGrey
Chemical BaseWater-based polyurethane-modified polymer
Solid Contents73% ± 2%
Elongation at Break>500%
Tear Propagation ResistanceNo fatigue cracking – Pass
Chemical ResistanceGood resistance to mild acids, alkalis, and environmental weathering
Cure MechanismWater evaporation
Touch Dry Time (Tack Free)6 hours @ 25°C / 50% RH
Recoat Time6 hours @ 25°C, 50% RH
Full Cure3 days @ 25°C, 50% RH
Waterproof Time72 hours after final coat (full cure)
Application Temperature10°C–26°C
Recommended Thickness - Walls1.2 mm DFT (2 coats)
Recommended Thickness - Floors1.2 mm DFT (2 coats)
Coverage8–10 m² per 15L pail @ 1.2 mm DFT (two coats)
Shelf Life12 months
Compliance StandardsAS3740:2021, AS/NZS 4858, AS4654.1:2012
Available Sizes5 Kg / 20 Kg

Downloads

Real Projects. Real Results.

View All Projects
  • Pool Renovation Pool Renovation Before After

    Pool Renovation

    Gold Coast, QLD

  • Below Ground Retaining Wall Below Ground Retaining Wall Before After

    Below Ground Retaining Wall

    Sydney, NSW

  • Concrete Water Tank Concrete Water Tank Before After

    Concrete Water Tank

    Perth, WA

  • Commercial Podium Commercial Podium Before After

    Commercial Podium

    Melbourne, VIC

  • Before After

    Swimming Pool Construction

    Brisbane, QLD

How to install

Watch the install

Step-by-step from prep to top coat. Filmed on the tools, not in a studio.

Watch the install poster

Why Choose

The Waterproofing Shop?

We supply premium waterproofing products backed by expert advice, fast service and real-world experience.

100% Australian Owned & Operated 100% Australian
Owned & Operated
30+ Years in the Waterproofing Industry 30+ Years in the
Waterproofing Industry
Thousands of Products in Stock Thousands of Products
in Stock
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Australia Wide
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Support

Frequently asked questions

View all FAQs
  • Where is ACTFLEX 906 WPU used?
    Compatibility

    906 WPU is used in internal wet areas (bathrooms, laundries, ensuites), external balconies, podiums, and rooftops under tiles or screed. Class III certified for both internal and external use.

  • What's the coverage and DFT?
    Performance

    Coverage is 8-10 m² per 15L pail at 1.2mm DFT in a two-coat application. Achieves over 500% elongation, fully waterproof 72 hours after the final coat.

  • How is 906 WPU applied?
    Installation

    Single-component, ready-to-use - no mixing required. Apply two coats at 90 degrees to each other over a primed substrate using brush or roller. Recoat after 6 hours at 25°C/50% RH; full cure in 3 days.

  • Standards compliance?
    Compliance

    906 WPU is certified to AS3740:2021, AS/NZS 4858, and AS4654.1:2012 - Class III (non-vapour-barrier). Compliant for both internal wet area and external above-ground applications.

  • Is it low VOC and indoor-safe?
    Performance

    Yes. 906 WPU is a water-based polyurethane with low VOC content, making it suitable for occupied buildings and indoor wet-area applications. 12-month shelf life when stored sealed.

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