ACTFLEX 900S Self-Adhesive Fleece EPDM Sheet membrane
ACTFLEX 900S Self-Adhesive Fleece Back and Front EPDM Roll
ACTFLEX 900S Self-Adhesive Fleece Back and Front EPDM Roll
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ACTFLEX 900S Self-Adhesive Fleece EPDM Sheet Membrane

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ACTFLEX 900S Self-Adhesive Fleece Back and Front EPDM Roll is a versatile waterproofing solution designed for easy and efficient application. This 1m x 20m roll features a self-adhesive fleece backing for quick installation, perfect for direct stick tile applications. The front EPDM layer offers outstanding resistance to weathering, UV exposure, and chemical degradation, ensuring long-lasting performance. With a 60mm overlap requirement that must be welded to the overlapping sheet, it provides superior protection against water ingress, making it ideal for waterproofing roofs, decks, balconies, below-grade areas, and under-tile applications.

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ACTFLEX 900S Self-Adhesive Fleece EPDM Sheet membrane

ACTFLEX 900S Self-Adhesive Fleece EPDM Sheet Membrane

The Waterproofing Shop

Pickup currently unavailable

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517
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Frequently bought together

Waterproofing Systems Built for Australian Conditions

Engineered to perform in the most demanding environments.

Pool Waterproofing System

Designed for permanent water immersion. Chlorine, salt & UV stable.

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Retaining Wall System

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.

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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

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
Fast Shipping Australia Wide Fast Shipping
Australia Wide
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Support

Frequently asked questions

View all FAQs
  • What is ACTFLEX 900S?
    Compatibility

    900S is a self-adhesive fleece-backed EPDM rubber sheet membrane for internal and external waterproofing - balconies, decks, podiums, wet areas, and below-grade applications. Fleece backing bonds to substrate adhesives.

  • What's the membrane thickness?
    Performance

    900S is 1.2mm thick total, with 20 m² per roll. The EPDM rubber composition delivers over 450% elongation, 1.2 N/mm peel strength, and resistance to bending at -40°C without cracking.

  • How are seams sealed?
    Installation

    Seams are heat-welded for a permanent waterproof joint - or use the matching detailing adhesive per the TDS. The membrane becomes immediately waterproof once seams are welded. Tack-free in 12 hours, full cure in 24 hours.

  • Application temperature?
    Compatibility

    Apply between 10-35°C ambient. Below 10°C the adhesive doesn't activate properly; above 35°C the membrane becomes too soft to handle. 36-month shelf life when stored sealed.

  • Chemical resistance?
    Performance

    900S resists alkalis, salts, bleach, and most common construction chemicals. Suitable for pool deck and chemical-exposure applications. Class III waterproofing membrane meeting Australian wet area requirements.

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