PY4: Polyester Resin System

PY4 produces a stiff supporting mortar, and is effective for the rapid installation and reinstatement of manhole covers and frames in heavily trafficked areas. It is highly recommended for ductile ironwork and has been HAPAS approved since 2005. PY4 conforms to HA104/09, has a rapid strength gain and can be opened to traffic in 40 minutes.

  • Workability: 5 – 10 minutes
  • Set time: 15 minutes
  • Depth: 5mm – 50mm
  • 8.25N/mm² tensile strength in 1 hour
  • 61.5N/mm² compressive strength in 1 hour
  • 19N/mm² flexural strength in 1 hour
  • Size: 25kg bucket
  • NBS Source registered for ease of specification
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