In the field of buildings and public works, there are several types of floor covering. Paving stones, for example, are widely used for large spaces. There are several types, including classic paving stones and interlocking paving stones. The latter are made in shapes that allow them to interlock to form a solid, unified block. Find out here how interlocking paving stones are laid.

Characteristics of interlocking paving stones


Careful observation of the structure of a paving stone reveals a perfect interlocking layout of the paving stone units. This is made possible by the shape and dimensions of the paving stone. This is a rule that the manufacturer has to follow in order to make it easier for the construction company to carry out the work. But very often, the two are the same entity.

The prefabrication or purchase of interlocking paving stones can be detrimental during installation. The shape and dimensions must be respected according to the size and architecture of the surface to be filled. These characteristics must be followed to the letter, especially for interlocking pavers. There are S, L, X, H or T-shaped pavers, which are shapes that are easily held together.

The different installation methods

Interlocking paving stones have special features that make them different from conventional paving stones. Although their installation is not complicated, it requires a specific and precise methodology. There are two ways of laying these paving stones.

Laying on mortar

This is a stabilized layer that can be a paving or screed system. This technique is reserved for heavily used surfaces or those that are supposed to support heavy loads. The level of traffic, the mobility and the size of the ground are, therefore, the criteria that call for the use of this laying method.

Firstly, it is necessary to ensure the solidity of the foundation by respecting all the stages of good mortar construction. The surface must be uniform with the stability of each layer up to the semi-cementing. Next, it is very important and even mandatory to use geotextile to separate the layers of soil and gravel, for example.

This ensures a better solidity of the soil and a particular thermal resistance. It is a very economical solution. Finally, a stable and suitable homogeneous bed must be formed before the paving stones are laid. These are two finishing steps that must be respected to obtain a perfect result.

Laying on a sand bed

The sand bed is a surface prepared by compressing the layers of sand to form a homogeneous and resistant surface. It is used for small spaces and can be achieved with a sand compression device. The type of sand is also important. Yellow earth should be used here, if possible, or clay soil. The same method follows as for laying on mortar. This also involves the use of geotextile.

The advantages of using interlocking paving stones

The use of interlocking paving stones has several advantages. Nowadays, this material is widely used. One of the first advantages is the ease of installation. Indeed, it is very easy to lay out if you follow a good methodology. The laying time is also very fast. Interlocking paving stones are available on the market, and their cost is relatively low.

Final thoughts

How to Lay Pavers on Concrete Slab

In summary, there are two main ways to lay interlocking paving stones. Each of these methods requires certain rules to be followed. The choice of installation technique depends on the shape and size of the area to be paved. The use of interlocking paving stones also has many advantages, such as ease and speed of installation. Sound off in the comments section below, and tell us what you want to read next and if you want to read more about stone paths.