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Australia’s Leading Precast System

One Block Endless Retaining

Why Interbloc

Why Interbloc for Retaining

Engineered System

Design with certainty. Backed by Envirocalc®.

Envirobuild® 3D

See it before you build it. Free design tool.

Supply & Install

Blocks and installation. One relationship.

Rapid Install

Walls standing in hours, not weeks.

Buyback Model

Return blocks when the project is done.

Retaining Walls

Fast, Durable Retaining
Solutions

Interbloc® is a precast concrete retaining wall system built for speed, engineering certainty, and a long service life. The blocks interlock as they are placed, so a gravity wall, a reinforced cantilever wall, or a temporary retaining structure can be built in hours rather than weeks.

Interbloc® retaining walls have been used on civil, subdivision, and infrastructure projects since 2004. Every wall is designed for your specific site conditions and loads using our Envirocalc® engineering software, and every block has reinforcement ducts and shear keys built in. A retaining wall should last a long time, and Interbloc® walls are built to serve their full design life. Where the works are temporary, our buyback programme means you can sell the blocks back when the job is done.

Find Your Sector

Who We Work With

Interbloc gravity retaining wall under a canopy at a construction site

GRAVITY RETAINING

Interbloc® gravity retaining walls hold back earth using the weight of interlocked concrete blocks, with no structural footing needed. Engineered for your soil and loads, built in hours, and well suited to temporary works, yards, and civil works.

CANTILEVER RETAINING

Where space is tight and walls need to go higher, reinforcing steel runs through ducts in the blocks and ties into a concrete footing. The result is a taller wall with a smaller footprint, fully engineered and certified.

Reinforced Interbloc cantilever retaining wall under construction
Interbloc blocks stabilising a slip face during emergency road repairs

EMERGENCY RESPONSE

When a slip closes a road or threatens an asset, Interbloc® moves fast. Only Envirocon has the scale and stock for rapid deployment, stabilising a slip face within days, protecting people and property while the permanent fix is designed.

TEMPORARY WORKS

Push walls, excavation support, and staged works that install fast and come down just as fast. Every configuration is engineered and certified. When the job is finished, sell the blocks back through our buyback programme.

Interbloc blocks configured as a temporary push wall on a civil site

Other Solutions

More Ways to Build With Interbloc®

Storage

- Industrial bulk storage solutions

View Storage

Portables

- Temporary foundation and deadman solutions

View Portables

Mining

- Engineered mine site infrastructure

View Mining

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