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ARDEX WPM 444 4mm APP Bitumen Torch-On Membrane

*Professional Installation Required: Must be installed by a certified installer.*

Premium Waterproofing with ARDEX WPM 444 (Shelterbit Phoenix Star)

ARDEX WPM 444 is a high-performance 4mm APP (Atactic Polypropylene) modified bitumen waterproofing membrane. Engineered for maximum durability, this torch-on membrane features a distilled asphalt compound reinforced with a robust polyester and fibreglass composite, making it ideal for the most demanding environmental conditions.

Key Features & Performance Benefits

  • Extreme Cold Flexibility: Maintains pliability in temperatures as low as -15°C, preventing cracks in cold climates.
  • Superior Puncture Resistance: The 4mm thickness provides a heavy-duty barrier against mechanical damage.
  • Heat Stability: Resists temperatures up to 130°C, ensuring performance in high-heat environments.
  • Seamless Protection: Heat-welded laps create a homogenous, leak-proof joint.
  • High Elastic Memory: Excellent elongation properties accommodate structural movement and vibrations.

Common Applications

ARDEX WPM 444 is designed for multi-layer concrete or plywood systems, or as a single-layer system on concrete with protective topping.

  • Flat roofs (accessible and non-accessible)
  • Foundations, basements, and underground tunnels
  • Bridges, viaducts, and road infrastructure
  • Car parks and inverted roof systems
  • Major renovation and refurbishment projects

Technical Specifications

  • Type: APP Modified Bitumen
  • Reinforcement: Fibreglass and Polyester Composite
  • Thickness: 4mm
  • Roll Dimensions: 1m x 10m (Weight: 40kg)
  • Surface Finish: Sanded/Talc Top, Polythene Film Bottom

Recommended Primer: For optimal adhesion, use Ardex WPM 240.

Technical Resources

Technical data and specifications sourced from Ardex Australia.