Expanded polystyrene foam (or EPS foam) is a closed cell, resilient, lightweight rigid cellular plastics material produced in a range of densities between 10 kg/m3 and 35 kg/m3.

The two main grades of expanded polystyrene EPS foam we keep in stock are SL grade and VH grade. For when the project requires a higher density expanded polystyrene EPS foam we have two grades called X-28 and X-38.


EPS foam has many features such as:

  • Closed cell lightweight cellular plastics foam produced from polystyrene
  • Material has been modified by the addition of flame retardant additives
  • Gains excellent insulating properties from the stabilised air trapped within its cellular structure
  • Contains no CFCs or any other gas that can escape to harm the ozone layer or decrease its insulation properties
  • Highly resistant to the negative effects of moisture content
  • Exceptional floatation properties
  • Can withstand the effects of changes in temperature, thereby providing longevity in low temperature applications
  • Impervious to vermin or pests, including termites
  • Cost effective when compared to other insulating foams
  • Styrene can be painted with non-solvent based paints

Polystyrene Grades


The main applications for products manufactured from EPS foam are:

  • Thermal insulation systems (wall, roof and sub-floor)
  • Ceiling panels and other decorative surfaces
  • Concrete voids and block outs
  • Pipe insulation
  • Protective packaging
  • Floatation and buoyancy applications
  • Stage sets

You can read more about expanded polystyrene EPS foam in these reports published by the Plastics Association of Australia: