ARDEX WPM 155 Rapid

Single Component Fast-Drying Polyurethane-Acrylic Undertile Membrane for Internal Wet Areas

$11-$18/m2 (2 coats)

0.87 litres/m2 (2 coats)

ARDEX WPM 155 Rapid is a water based polyurethane-acrylic waterproofing membrane developed for high performance under-tile waterproofing. ARDEX WPM 155 is extremely fast drying and can be tiled over in just 4 hours.
  • Overview

    Why we like it: ARDEX WPM 155 Rapid is an extremely fast drying system which can be ready for tiling just 4 hours after application and is compatible with ARDEX tile adhesives for direct sticking.

    Videos

  • Description

    USES

    • Commercial and residential internal wet areas.
    • External wet areas, balconies and decks.
    • Other areas to be tiled or protected from foot traffic.

    FEATURES

    • Fast drying polyurethane acrylic membrane.
    • Excellent film build easy to gauge thickness.
    • Class III membrane in accordance with AS 4858 requirements.
    • Tough flexible film.
    • Excellent adhesion to a wide range of substrates.
    • Green Star meets the benchmark for VOC credit in the Green Building Council of Australia's Rating Tools

    LIMITATIONS

    • Not suitable for permanent immersed conditions.
    • Not suitable for foot traffic.
    • Not suitable for prolonged UV exposure.
    • Not suitable under negative hydrostatic pressure.
    • Not suitable for wet substrates or green screeds/concrete (unless first sealed with ARDEX WPM 300)
    • Not suitable for substrate temperatures below 10C or above 35 deg C.
  • Performance

    Technical

    Sustainability

    VOC Content: 42 g/L (DOWNLOAD Test Certificate)

  • Compliances and Accreditations

    Compliances

    • AS 3740 / AS 4858 (Class III)
    • AS 4654.1

    Third Party Verification

    Accreditations / Certifications

  • Systems & Installation

    Systems

    Option 1: Standard Application

    Primer: ARDEX P9, ARDEX WPM 300, or WPM 270 or WPM 265 or ARDEX Multiprime and Abaprime.
    1st coat: ARDEX WPM 155 Rapid (1.0 mm WFT on floors, 0.5 mm WFT on walls, 1-2 hours recoat time)
    2nd coat: ARDEX 155 Rapid (1.0 mm WFT on floors, 0.5 mm WFT on walls, 4 hours drying time for standard flat areas or 24 hours drying time required where silicone bond breakers or reinforcement is used)

    Option 2: Rapid Application

    Primer: ARDEX P9, ARDEX WPM 300, or WPM 270 or WPM 265 or ARDEX Multiprime and Abaprime.
    Junctions/Joints: ARDEX STB Tape
    1st coat: ARDEX WPM 155 Rapid (0.5 mm WFT on floors, 0.25 mm WFT on walls, 1-2 hours recoat time)
    2nd coat: ARDEX 155 Rapid (4 hours drying time until tiling)

    Installation

    SUBSTRATES

    Concrete

    Cured for minimum 28 days, wet concrete should be allowed to dry thoroughly or sealed with one coat of ARDEX WPM 300 at coverage rate of 3.0 m2 per litre.

    Renders and screeds

    Cured for min 7 days. Wet render should be allowed to dry thoroughly or sealed with one coat of ARDEX WPM 300 at coverage rate of 3.0m2 per litre and allowed to cure overnight.

    Fibre cement sheets

    Wet area grades only.

    Plywood

    Structural plywood (PAA branded) or marine grade or other wet area grade only. Not recommended for external use (refer ARDEX).

    PRIMERS

    ARDEX WPM 155 Rapid is suitable to use over ARDEX P9, ARDEX WPM 300, or WPM 270 or WPM 265 or ARDEX Multiprime and Abaprime.

    APPLICATION TYPES:

    Option 1: STANDARD APPLICATION

    ARDEX WPM 155 Rapid should be thoroughly mixed to a uniform consistency and ensure the coating is applied evenly at recommended coverage rates. Mobile joints should be reinforced using Deckweb and the membrane must be lapped to intrusions such as waste outlets in accordance with AS 3740. Apply ARDEX WPM 155 Rapid by brush or roller. A medium nap (8–12mm pile) or 50mm long bristle paint brush is recommended.

    COVERAGE

    This will vary with the porosity of the substrates. Two coats are recommended to get optimum performance.

    For floors

    A minimum dry film thickness of 1.0mm is required. A 20kg unit (15 Litres) will cover approximately 8.6m2 (based on two coats). A 5.3kg (4 Litres) will cover approximately 2.3m2.

    For walls

    A minimum dry film thickness of 0.5mm is required. A 20kg unit (15 Litres) will cover approximately 17.2m2. A 5.3kg unit (4 Litres) will cover approximately 4.6m2.

    DRYING TIME

    Recoat time is 1–2 hours between first and second coats. Drying time on flat surfaces under standard conditions is 4 hours. However, dry through time will be slowest in areas where ARDEX WPM 155 Rapid is applied over neutral cure silicone bond breaker, or is reinforced. Make sure these areas are dry before tiling, this will generally be 24 hours after the last application at 23 deg and 50% RH. Drying times will vary depending on humidity, surface temperature and porosity of substrates.

    Option 2: RAPID APPLICATION

    ARDEX WPM 155 Rapid should be thoroughly mixed to a uniform consistency and ensure the coating is applied evenly at recommended coverage rates. All junctions and joints should have ARDEX STB Tape applied. See above for detailed video on application of this tape.

    1. Ensure area is free from contaiments and clean making sure to remove all dust and prime fibre cement sheet with an approved primer (listed in the primers section). Apply the tape and use a roller to ensure that a secure bond is made between the tape and substrate and carefully moulded into the corners.

    2. Apply a coating of WPM 155 Rapid to the entire area to be waterproofed using a brush or roller, a medium nap (8–12mm pile) or 50mm long bristle paint brush is recommended. This first coat should be applied at 0.5mm (wet film thickness) to provide a 0.25mm dry film thickness. Allow to dry. Dry time is approximately 1-2 hours.

    3. Apply a second coat of the WPM155 Rapid membrane at a thickness of 0.5mm (wet film thickness) to provide a dry film thickness of 0.25mm. This will provide in total a dry film thickness of 0.5mm total dry film thickness.

    Note: The second coat needs to only be applied up to the edge of the ARDEX STB Tape (as pictured below)

    Tiling can begin once the second coat has dried which is generally 3 hours at 23°C in undertile applications. Drying times will vary depending on humidity, surface temperature and porosity of substrates.

    The membrane must be lapped to intrusions such as waste outlets in accordance with AS 3740.

    COVERAGE

    This will vary with the porosity of the substrates. Two coats are recommended to get optimum performance.

    A 20kg unit (15 Litres) will cover approximately 17.2m2. A 5.3kg unit (4 Litres) will cover approximately 4.6m2.

    CLEANING

    Wash hands, brushes, rollers with water while product is still fresh. For cured material, use mineral turpentine.

    PRECAUTIONS

    All surfaces must be structurally sound, dry and free from all surface contaminants.

    Do not use ARDEX WPM 155 Rapid under the following conditions:

    • Areas subject to negative hydrostatic pressure or rising damp, unless treated with ARDEX WPM 300.
    • Wet substrates or green screeds/concrete – need to be sealed with one coat ARDEX WPM 300 as described earlier.
    • Surface temperatures below 10°C or greater than 35°C.
    • Do not expose to prolonged UV conditions.

    SAFETY DATA

    ARDEX WPM 155 Rapid is a non-hazardous and non-dangerous product. Wear protective clothing when handling.

    Wash off splashes with clean water. In case of eye contamination, rinse thoroughly with clean water. If irritation persists, seek medical advice.additional information is listed in the material safety data sheet.

  • Compatible Products

  • Spec Clause

  • Projects & Installers

    Project Showcase

    Bathroom, Ringwood East, VIC

     

     

     

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    Bathroom Project

     

     

     

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    Bathroom Project

     

     

     

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  • Downloads

    ARDEX WPM 155 Rapid

    Two part, water based epoxy polyamide membrane/barrier coating suitable for damp substrates

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