Edging and Kerbs

Kerbs (raise or flat edging) are typically used on the edge of roads and side-walks.  The profile (shape) and height of kerbs vary according to the application.

Kerbing is a versatile product that provides both a neat finish as well as practical uses.  The most obvious function of kerbs is to guide storm water to catchment structures and precision measurements are required to ensure that no puddles are formed.

Two construction methods are used for the installation of kerbs and edging; in-situ casting or packing pre-manufactured blocks (pre-cast).

Using pre-cast kerbs

For pre-cast kerbs a foundation is dug, filled with a suitable stabilized mixture and then the kerbing blocks are positioned carefully according to horizontal and vertical measurements.  Every block is individually aligned and secured into position with the stabilized mixture before the openings between the blocks are filled with cement by experienced masons to create a neatly finished product.  This construction method is very labor-intensive creating jobs for a vast array of skilled, semi-skilled and unskilled laborers.

Casting kerbs in-situ

In-situ kerbing is most cost-effective where long stretches of edging is required.  With in-situ (on site casting) the kerbing strip is cast with a “moving mould” (kerbing machine) in the correct position and finished by hand.  Although the concrete mixture for this process may vary according to application, every mixture requires specific ratios of the various materials (typically coarse gravel, river stone, sand, water and cement) to achieve the neat, yet strong final product.

The continuous kerbing strip is cut at intervals to allow for fractional movement caused by differing weather conditions; this prevents unsightly cracking.

Our Experience

Kerbs and edging (both pre-cast and in-situ) are almost always included in the construction contracts performed by Marracon and it would be an impossible task to calculate how many kilometers of drive-ways, roads and side-walks were edged with this product.  Suffuse it to say that we’ll gladly include a quality guarantee!