IsoBoard thermal insulation is a high density, rigid, extruded polystyrene insulation board, which has a 100% closed cell structure. Since 1970, IsoBoard has been tried and tested internationally. Since 1995, it has been manufactured in South Africa using a fully automated extrusion process in accordance with international specifications and standards.


The use of advanced, state-of-the-art manufacturing technology makes it possible to guarantee exceptional attributes, such as:

  • Low thermal conductivity
  • High resistance to water vapour diffusion and water absorption
  • Uniform density distribution
  • Very high compressive strength
  • Ageing resistance as well as resistance to bacteria and microorganism growth.

These and many other features make ISOBoard an innovative and cost-effective alternative to conventional insulation products. This versatility means that ISOBoard is used in various applications in numerous different markets.