Porcupine is a versatile concrete block retaining wall system. It needs no mortar and requires minimal plant and machinery for installation.

The individual Porcupine element is an interlocking curved concrete block, which achieves its stability by the spines on the top surface of one block matching those on the bottom of another. No mortar is needed.

The blocks can be laid very quickly, normally in a simple stretcher bond, similar to brickwork, leaving a small coursing gap between adjacent blocks.

Porcupine is a versatile and economic solution for effective and visually appealing retaining walls. It has been successfully used in the following applications:

  • Terracing walls

  • Dividing walls

  • Culvert wing walls

  • Separation of twin level highways

  • Protection of rock outcrops

  • Watercourse bank protection

  • Access denial walls

  • Railway signalling refuges

  • Supermarket car parks

  • Flood barriers

Porcupine concrete retaining blocks weigh less than 20kg.