Light curbs and edges are not only placed on the edges of the pavement. They are very often set as visible elements separating two different surfaces. Their line can create a specific drawing on larger surfaces, e.g.. in the squares. Often, edgings are also used to separate cultivated areas with different plants. In this way, the plane of the lawn can be separated from the frequently dug part intended for periodic planting, you can also surround the outskirts of the place, in which plants are planted spreads quickly, creating underground runners, etc..
The curbs are usually placed before the pavement is made, after preparing the road bed. Heavy rolling of the pavement may push the curb outwards, therefore, as the surface or its layers are compacted, the position of curbs should be checked and secured by appropriate soil compaction on the outer side of the road. Roadway curbs have a wider base and are often set on the concrete layer, usually therefore they are sufficiently resistant to being thrown off during rolling. Light curbs and edges are usually placed on a sand bed. In order to ensure their greater stability, they can be placed on a cement-sand bedding. The gaps between the curbs are filled with cement mortar, which connects them together and protects the gaps against weeds.
It needs to be highlighted that, that in most cases curbs protruding above the ground (channel roads) are less desirable, because they reduce the aesthetic value of the road. Flat surfaces well connected with the surrounding planes always look better. In the vicinity of lawns, a protruding curb can also make mowing very difficult.