The Rocklok® System is the latest in segmental retaining wall innovation. Proudly developed in NZ in consultation with engineers, designers and other construction stakeholders. Rocklok® provides superior strength and performance with stronger pin-block connection for longer design life. This system allows for near vertical walls, maximising leading-edge connections between block-grid.

Rocklok® is a fully engineered system, ideal for bridge abutments and wing walls and improves existing connection strengths, providing extra safety and performing better when critical loads are present.

Rocklok® provides an attractive and economical alternative to other systems, but offering superior strength and performance.

A great looking, durable and easy-to-install NZ made product.

The Rocklok is ideal for:

  • Tall retaining wall heights up to 15m height
  • Terraced Walls
  • High seismic areas
  • Steel – ladder reinforced-soil retaining structures
  • Bridge abutments
  • Wing walls
  • Water applications
  • Embankment stabilisation
  • Soil-anchor and rock-anchor walls


Rocklok Flat
Dimension: 450mm L x 300mm W x 200mm H
Coverage: 11.12 blocks per m2
Pallet: 40 blocks per pallet
Setback: 0.9 degree from Vertical (near vertical)
Weight: 39.5 Kg

Rocklok Corner
Dimension: 400mm L x 225mm W x 200mm H
Coverage: 12.5 blocks per m2
Pallet: 54 blocks per pallet
Setback: N/A
Weight: 38 Kg

Rocklok Cap
Dimension: 450mm L x 300mm W x 100mm H
Coverage: 2.23 blocks per linear metre
Pallet: 63 blocks per pallet
Setback: 0 degree from Vertical
Weight: 27.5 Kg

Rocklok Fiberglass Pins*
Dimension: 135mm L x 16mm diameter
Box: 45 pins per box
* Each Rocklok Flat block requires 2 Rocklok fiberglass pins

Important information

  • Please consult with your local council for sign requirements and regulations prior to the construction of your wall.
  • For retaining walls exceeding 900mm, or supporting additional loads, slopes, etc., engineering advice should be sought. Contact us for advice.

Benefits and Features

  • 100% NZ designed and made
  • Fully engineered & tested
  • Versatile
  • Superior Strength
  • Durable
  • Flexible
  • Clean smart finish
  • Vertical
  • Environmentally Safe
  • Seismic Performance




Rocklok Flat

Iron Sand


Rocklok Corner

Iron Sand


Rocklok Cap

Iron Sand


Rocklok Flat

Rock Salt


Rocklok Corner

Rock Salt


Rocklok Cap

Rock Salt


Rocklok Fiberglass Pin


Made to order:


Contact us

Rocklok Ladder

Iron Sand/Rock Salt

Contact us

Rocklok Trench

Iron Sand/Rock Salt


Product Information


What is the minimum recommended width of the base trench?

What materials are recommended for the levelling pad?

How many Rocklok blocks should be buried as embedment?

I am building on a slope. Can I use the standard embedment depth?

I am building on a slope. Can I use the standard embedment depth?Can I replace the Rocklok fibreglass pins for other pins or equivalent products?

What type of soil should be used inside the Rocklok blocks and in the drainage column?

When do I start placing the geogrid reinforcement?

What is the suggested distance between terraced gravity walls to act as independent structures?

Related Products

Allan Block® Retaining

The Allan Block stacks beautifully and creates a smooth and fluid finish for every wall, bringing a refined look of classic natural beauty to any landscape.

DuraForce® Non-Woven AS Series Geotextile

DuraForce® Non-Woven Geotextiles are a premium range of needle punched engineering fabrics for, drainage, filtration, separation, reinforcement, and protection.

StrataGrid® – High Performance Soil Reinforcement Grid

StrataGrid® is a high-performance soil reinforcement product. It is made with polyester yarns that have a high molecular weight and excellent tensile strength.