The right substructure for laying sidewalk tiles

A stable and frost-resistant substructure is very important for the laying of paving slabs. It determines the later appearance of the entire sidewalk and is decisive for an optimal work result. Read what you should look out for.

The substructure and the edging for the sidewalk slabs

The laying of paving slabs usually begins with the excavation of the existing soil under the surface to be fastened. Already here, you should make sure to allow enough space for any attachment of the edge for the sidewalk or the area with. The depth of the excavation depends on several things:

  • the subsequent loading of paths or surfaces by pedestrians or vehicles
  • the strength of the pending soil
  • the material that is provided for the support layer
  • the stability of the paving slabs to be laid

What you should look for in the underground

Different types of soil, such as poured soil, require deeper excavation. If there are very unfavorable conditions and if the paving slabs are to be strong enough, it can sometimes take up to half a meter or even more. Also, be careful not to lay the paving slabs on areas that are soaked in rain during periods of rain. If this is necessary, the substrate must be improved, for example, by adding cement and then compacting it.

To the substructure and the edge enclosure

Note that often an additional border must be added. This prevents the flooring from slipping sideways when the payload is very heavy. For this purpose, you can use different types of concrete or natural stone curbs. The layer directly below the paving slabs to be laid later should be permeable to water. Waterlogging should never occur, otherwise the paving slabs will bloom and quickly become unsightly. To produce the necessary water permeability, a layer of gravel is usually applied, the strength of which depends on the nature of the existing soil. This layer should be compacted so that the plates do not lower later. It is best to use a vibrating plate, as you can borrow.

After the preparation of the underground

Once the preparation has been done thoroughly, you can start laying the paving slabs. Pay attention to appropriate joints, which should run evenly. Do not forget to sand the joints and compact them as well.

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