With decades of experience in both construction and circular innovation, we’re committed to helping builders, engineers, and developers build smarter and more sustainably. Together, we’re reshaping the future of construction for a lower-carbon world.

By combining engineering capability with waste-stream recovery, we transform high-quality surplus concrete into durable, reusable precast blocks - reducing landfill, lowering embodied carbon, and extending 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 our blocks in circulation.

Through 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.