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Expanded Polystyrene (EPS) Insulation


What is Expanded Polystyrene (EPS) Insulation?

An external wall insulation made from expanded polystyrene and is the most commonly used insulation type.


Why is Expanded Polystyrene (EPS) Insulation beneficial?

  • Economic
  • Lightweight : 19 kg/m3
  • A closed cell structure traps air and slows down transfer of heat towards cooler air
  • Contains graphite which underpins the structural integrity of the insulation
  • Low moisture absorption and high resistance to mould growth


What is Expanded Polystyrene (EPS) Insulation used for?

New-build or refurbishment projects, masonry substrates  and steel frame structures on low-rise buildings


Technical Information

  • Typical thermal conductivity: 0.030 – 0.032 W/mK
  • Class E reaction to fire