Two Geofoam blocks next to each other

Advanced Geofoam ground stabilisation, giving you maximum control of your project’s design, timeline, and costs.

Unibloc Geofoam® is a high performing fill material made from moulded polystyrene, designed and engineered specifically for civil and commercial building construction. Its durability and exceptional strength to weight ratio, allow Unibloc Geofoam® to resist heavy structural loads and reduce underlying soil stresses for a variety of applications, such as lightweight road construction, bridge abutments, elevation changes, foundations and many more.

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Engineered in design, and manufactured using the world’s most technologically advanced machinery, we supply Geofoam to builders around Melbourne to help maximize on-site efficiency.

The lightweight convenience with consistent strength and stability for various civil and building applications surpasses the performance of traditional fill materials; making it a highly versatile and dependable product. It can easily be cut and shaped on-site, so you can keep your project running on schedule.

EPS geofoam road construction diagram with annotations

Lightweight Roads

lightweight roads 2D model


Geofoam foundations 2D model

Weight Reduction for Utilities

Weight Reduction for Utilities 2D model

Bridge Abutments

Side Hills

Geofoam side hills 2D model

Elevation Changes

Geofoam elevation changes 2D model

Retaining Walls

retaining wall 2D model

Weight Reduction for Structures

Geofoam weight reduction for structures model

Why use Geofoam?

  • Durable, strong, and stable

  • Faster, more efficient installation

  • Contains no CFC, HCFC, or HFC

  • Inert in all weather conditions

  • Resistant to water absorption

  • Lightweight

  • Exceptional strength to weight ratio

  • Reduced construction times – more cost effectivele

  • Easily shaped on site or supplied prefabricated

  • Improved throughput

  • Reduce lateral loads

  • Manufactured to International Standard

  • Reliable material performance

  • Custom grades and sizes available


Unibloc Geofoam® is produced in block form, available in various standard and custom sizes, and is easily installed or shaped on-site.




2.5m, 3m, 5m, 6m

Custom sizes and profile cutting available.


Pricing is based on weight and cut complexity. You can select from our standard geofoam sizes or customise your size & shape specific to your project.

For a detailed pricing take-off, please send through your information, drawings and requirements for an obligation free estimate.


Get a free estimate


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