GeoFoamX^®

High-performance, extremely strong, lightweight EPS blocks for structural fill

GeoFoamX® by Foamex is a high-performance expanded polystyrene (EPS) void fill solution engineered for civil engineering, landscaping, and structural applications. Lightweight yet remarkably strong, GeoFoamX® reduces ground pressure while supporting heavy structural loads, making it ideal for bridge abutments, road embankments, piling walls, elevation changes, and retaining structures. Manufactured in Australia to stringent standards, it offers consistent quality, cost-effective transport, and weatherproof installation.

Made using recycled content, GeoFoamX® supports circular construction practices by turning waste into space—transforming post-consumer and offcut EPS into dependable, high-strength fill. With a variety of densities and sizes available, GeoFoamX® is dimensionally stable, easy to shape, and a smarter alternative to traditional fill materials in complex ground engineering projects.

Benefits of GeoFoamX^®

Lightweight and easy to transport, reducing freight and installation costs
High compressive strength suitable for structural and civil applications
Manufactured to AS 1366.3 (1992) – meets Australian Standards
Long-term dimensional stability and low moisture absorption
Fast installation – no need for specialist earthmoving machinery
Can be cut or shaped on-site to suit complex designs
Ideal for slope stabilisation, bridge abutments, piling and foundation works
100% recyclable – with Foamex offering an EPS take-back service
Inert and non-toxic – will not rot, degrade or attract pests
Suitable for all weather – enables year-round construction

GeoFoamX- EPS Blocks

Sizes & Grades

GEoFoamX void fill is produced in lightweight EPS block form with configurable dimensions to suit structural design loads.

Widths	Lengths	Thickness
1200 mm	2400 mm to 5000 mm	600 mm

Applications

GeoFoamX® is a lightweight, structural-grade void fill solution used across a wide range of civil, commercial and geotechnical applications. It can be used in confined urban sites or challenging soil conditions where traditional fill is unsuitable or creates excessive settlement.

Typical applications include:
Bridge abutments and retaining structures
Slope stabilisation and embankment fill
Road embankments and lightweight subgrades
Void forming beneath slabs, terraces and platforms
Stadium seating, stepped auditoriums and plaza decks
Piling wall formers and secant wall systems
Elevation changes and load reduction over utilities

Performance & Strength

GeoFoamX® offers high compressive resistance and a consistent strength-to-weight ratio, outperforming conventional fill materials like soil or aggregate. Key performance features include:

Available in multiple densities to meet engineered load requirements
Maintains compressive strength under long-term static and dynamic loads
Dimensionally stable with negligible creep or settlement over time
Low water absorption (closed-cell structure), retaining structural integrity even when buried
Withstands environmental loads without degrading, rotting or attracting pests

Sustainability

GeoFoamX® is manufactured in Australia using expanded polystyrene (EPS) that includes post-consumer and post-industrial recycled content. By incorporating recovered EPS into new high-strength blocks, Foamex is turning waste into space—delivering a circular solution for ground engineering projects.

Sustainability credentials:

Contains recycled EPS recovered from packaging and construction offcuts
100% recyclable at end-of-life through Foamex’s national take-back program
No CFCs, HCFCs or HFCs used in manufacturing
Inert and non-leaching – does not release harmful substances into soil or water
Reduces transport-related emissions due to its ultra-lightweight nature
GeoFoamX® helps reduce waste to landfill while supporting low-impact construction practices, aligned with sustainable design goals and environmental certification pathways.

Product Brochure

Technical Specifications

ENVIRONMENTAL

FAQ's

Frequently Asked Questions About Geofoam Void Fill

What is GeoFoamX® used for?

GeoFoamX® is a lightweight, high-strength EPS fill material used in civil construction, landscaping, and infrastructure projects. It’s ideal for bridge abutments, void filling, slope stabilisation, raised platforms, piling formwork, and elevation adjustments.

How strong is GeoFoamX®?

Despite being lightweight, GeoFoamX® has a high compressive strength and excellent load-bearing capacity. It is available in a range of densities to match engineering design loads, with strength profiles verified to meet Australian Standard AS 1366.3.

Can GeoFoamX® be cut to shape on-site?

Yes. GeoFoamX® is easy to cut, shape or notch using standard construction tools, enabling precise installation in complex geometries. Foamex also offers pre-cut solutions for specific applications.

Is GeoFoamX® recyclable?

Absolutely. GeoFoamX® is made from expanded polystyrene (EPS), which is 100% recyclable. Foamex accepts offcuts through a dedicated take-back program and recycles EPS into new construction materials like insulation and sheet products

Is GeoFoamX® suitable for piling and wall formers?

Yes. Its dimensional stability and ease of cutting make it ideal for piling wall formers and voids in complex foundations. Many projects use GeoFoamX® for secant walls and precast beam voids, especially where precision formwork is critical.

Where can I get technical advice or specifications?

Contact Foamex directly for technical data sheets, load tables, and installation guidance tailored to your project. Our team will assist in choosing the right density and configuration to suit your site conditions.

GeoFoamX®