Heat-Welded Sheet Waterproofing System


ARDEX WPM 750 is a weldable sheet membrane system that is used for waterproofing tiled areas such as showers and bathrooms. As compared to liquid waterproofing membranes, ARDEX WPM 750 Undertile Sheet Membrane gives a thin and consistent waterproofing gauge. This system can also fast track installation as there is no need to wait for liquids to dry – simply apply the solvent free adhesive and then the membrane (like wallpaper). Tiling can begin 60 minutes after the membrane is installed. This product has a fleece on both sides of the fabric that help with tile application, while still excelling in durability and waterproofing capabilities. The laps of the membrane can be heat-welded using a Leister Hot Air Gun. This ensures a standard thickness and that all the laps are securely joined, creating a fail-safe waterproofed area.

  • BRANZ Appraised (No. 727)
  • Safe and secure undertile waterproofing solution
  • Suitable for use with undertile heating systems
  • Consistent 0.75mm gauge
  • Suitable for walls and floors
  • Installed by ARDEX Approved Applicator
  • Tiling can begin 60 minutes after membrane installation
  • Heat-welded corners and laps


  • Typical Uses:
    • Bathrooms
    • Kitchens
    • Laundries
    • Wet areas
  • Substrates:
    • Plywood and timber
    • Concrete
    • Fibre-cement sheet
    • Wet-wall linings (Gib Aqualine, Villaboard)
  • Drying & Curing:
    • Tile after 4 hours
  • Location:
    • Internal
  • Packaging:
    • 20m Roll