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ARDEX WPM 300 Kit

High-Performance Epoxy Moisture Barrier & Waterproofing Membrane

ARDEX WPM 300 (Hydrepox) is a specialized two-component, water-based epoxy polyamide membrane designed for professional-grade moisture protection. It functions as both a heavy-duty moisture barrier and a hydrostatic pressure-resistant waterproofing membrane, suitable for negative side applications.

Key Features & Benefits

  • Green Concrete Compatible: Can be applied to damp surfaces and freshly laid concrete to accelerate project timelines.
  • AS 4020 Certified: Potable Water Approved, making it safe for drinking water structures and storage tanks.
  • Hydrostatic Pressure Resistance: Highly effective as a negative side waterproofing barrier against ground water pressure.
  • Efflorescence Prevention: Blocks rising damp and prevents the formation of unsightly salt deposits on masonry.
  • Low VOC & Eco-Friendly: Water-based formulation with only 26g/L VOC, meeting strict Green Star building requirements.

Ideal Application Locations

ARDEX WPM 300 is the industry standard for low water vapour transmission. It is widely used as a seal coating over damp concrete or as a negative side waterproofing barrier in:

  • Basements, lift wells, and underground tunnels
  • Retaining walls and multi-level car parks
  • Sub-floor preparation for levelling compounds, carpets, or tile adhesives
  • Sealing concrete surfaces before applying conventional building paints

Technical Specifications

  • Available Colours: Grey, Mojo Black
  • Coverage (Water Stop): 60m² per kit (1 coat)
  • Coverage (Waterproof Membrane): 30m² per kit (2 coats)
  • Drying Times: Recoat in 4 hours; Full cure in 7 days
  • Pack Sizes: Available in 4L and 20L kits

Technical Documentation

Ardex WPM 300 PDS | SDS Part A | SDS Part B

Technical data and specifications provided by the manufacturer. View the official ARDEX WPM 300 Technical Resources.