Coronavirus Update from Instarmac

Members of our Customer Sales and Support Teams are working remotely and in place to support your business requirements.

Manufacturing operations and logistics are running to support key essential customers with additional safeguarding measures in place.

If you need further information please contact us on +44 (0) 1827 254 400 or email

We are closely following the latest government guidance and will continue to monitor the situation.  Please check our website or social media channels for further updates.

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

For more details on this product call us on +44(0) 1827 254 400

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