Geofoam expanded polystyrene blocks from Foamex Group are used as cost-effective void fillers in a broad range of geotechnical applications encompassing civil, construction and landscaping works.

Foamex Geofoam is a lightweight material that delivers both strength and flexibility in application – it can provide protection from noise, vibration, and even earthquake shocks. Being highly controllable, it is easy to handle too. The expanded polystyrene blocks have a service life that’s comparable to other construction materials; besides, Geofoam does not settle or rot and provides zero nutritional value for insects or rodents. By retaining its physical properties under engineered conditions of use, Foamex Geofoam can help solve the challenges of working with soft ground, as well as slope stabilisation and retaining walls.

Foamex Geofoam is superior to traditional void filler materials such as waste tyres, wood chips or soil, which have higher densities and are unreliable due to their susceptibility to weather conditions as well as difficult handling. Additionally, natural materials will often become unstable over time due to lateral ground pressure and movement.

Key features of Foamex Geofoam EPS blocks include inert and water-resistant material ensuring a long service life; easy to handle and install, even during inclement weather conditions; ability to provide greater control of geotechnical projects; recyclability; and compliance with Australian Building Standards AS1366.3 (1992).

An extremely versatile void filler material, Foamex Geofoam finds application in sports arenas; roads and airfields as sub-grade insulation; and below-ground building segments to reduce seasonal heating and cooling requirements. 

Made in Australia, Foamex Geofoam is available in a range of densities and sizes.


Width: 1200mm ; Length: 5000mm; Thickness: 600mm   


Width: 1200mm; Length: 4800mm; Thickness: 600mm

Non-standard sizes and thicknesses are available to suit specific applications.