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NZ’s only accredited product stewardship scheme turning surplus concrete into durable, reusable building systems.

about us

Envirocon is a New Zealand-owned construction and circular innovation company committed to helping builders, engineers, and developers build smarter and more sustainably. By combining engineering expertise with waste-stream recovery, we transform high-quality surplus concrete into durable, reusable precast products that reduce landfill, lower embodied carbon, and extend material life. As New Zealand’s first accredited construction product stewardship scheme, we design for reuse from day one-backed by a buyback guarantee that keeps materials in circulation.

Our product range includes Interbloc and Interbloc+, premium interlocking precast systems designed for demanding bulk storage and heavy-duty applications; Stonebloc, a large-format solution for civil and retaining projects requiring mass and stability; engineered precast counterweights for safe, certified ballast solutions; and EnviroCalc, our embodied carbon calculation tool that quantifies sustainability outcomes and supports informed procurement decisions.

Through Interbloc, Interbloc+ and Stonebloc, we’re not just supplying retaining and infrastructure solutions - we’re building a construction system designed to perform today and sustain tomorrow.

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“WHEN WE ARE LOOKING FOR THE SOLUTION THAT IS ROBUST AND COST EFFECTIVE WE ALWAYS TURN TO INTERBLOC”

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Lets get communities moving again.

With severe weather impacting new zealand, Envirocon has Interbloc in stock and ready to deploy for remediation, stabilisation and retaining works.

Popular solutions

See Solutions for Interbloc, Interbloc+ and Stonebloc below.

Civil Infrastructure

Expert civil engineering solutions for all projects, helping you build stronger and more efficiently.

Industrial Storage 

Cost-effective bulk storage solutions, designed for industrial use and adaptable to any environment.

Rural Storage 

Rural storage is ideal for keeping equipment secure on your farm. Additionally, it works well for silage pits.

Residential  

Timeless designs tailored for every residential retaining wall project

SUBMISSION READY ENGINEERING DESIGN IN MINUTES

Automated calculations for fast, NZBC-compliant design
The design and submission process for retaining walls can be complex and time-consuming. But what if there was a tool that could simplify it all?
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Get in touch with our team