Earth Retaining Systems


Geolok 300 is generally suitable for retaining walls up to 2m high, and Geolok 400 for retaining walls that exceed 2m.

Geolok is SANS:508:2012 certified.

Product Attributes:

  • Visible mechanical interlock in the form of a nib, which provides a high degree of shear resistance to block on block sliding.
  • Open face application requires less blocks per metre squared therefore it’s more cost competitive than closed face retaining block applications.
  • Nib ensures a maximum angle of inclination of 70 degrees.
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The Terraforce range consists of 3 different blocks

  • 4x4 blocks suitable for stadium seating & stairs.
  • L22 block suitable for walls up to 1.8metres – it also comes in a rock face finish.
  • L13 block suitable for walls that exceed 1.8 metres in height.

The Terraforce range is SANS:508:2012 certified.

Product Attributes:

  • It is laid in a closed face application which prevents backfill spillage, geofabrics are seldom required.
  • Interlocks on the horizontal plane in the form of the convex and concave shape of the block.
  • It is a versatile system and can be easily formed into curved shapes either convex or concave or into the walls in which the upper and lower profiles are continuously changing.
  • It can achieve quite tight curves.
  • Popular block for residential applications due to the versatility of the product.


Terrafix can be used for general erosion control, riverbank and lakeshore protection, storm water control and spillways, embankments and slope stabilisation, as well as bridge abutments.

Product Attributes:

  • Elements made from durable concrete and can be used in most saline or polluted conditions.
  • Highly permeable, but can be made impermeable by using an impervious membrane underneath the blocks, or grouting the structure with concrete or mastic.
  • Available 150mm thick and can be laid in different configurations, to reduce the quantity required.