Interbloc+ is a premium, locally manufactured wet cast precast concrete retaining system engineered for strength, speed, and sustainability. Designed with the asset owner, engineer, and contractor in mind, Interbloc+ delivers a robust, gravity-first retaining solution that is both cost-effective and visually refined.

The system uses precision-cast, interlocking concrete blocks with integrated connection features that ensure rapid, accurate assembly and exceptional stability. Interbloc+ provides flexible design options - from pure gravity walls to reinforced and mechanically stabilised configurations - allowing it to adapt to a wide range of site conditions and aesthetic requirements.

With its modular design, streamlined installation, and proven New Zealand engineering, Interbloc+ eliminates much of the manual labour and complexity associated with traditional retaining wall systems - offering a faster, safer, and more sustainable way to build.

Each premium block includes vertical reinforcement ducts, a shear key, and a lifting pin, all designed to enhance structural strength and integrity. The shear key transfers shear forces from lateral loads between the structure and the key but does not resist overturning forces, which are managed by the weight of the concrete block.