Paving is a floor covering, an aesthetic alternative to asphalt or eternal concrete. The floor is covered with cobblestones organized according to a plan, called a layout plan: you can draw patterns, rosettes or simply arrange them regularly.
Different paving techniques
For successful paving, we must take into account several criteria: the resistance to loads and weather, the necessary maintenance... Once the use of the pavement determined, we must decide on a method of laying: on sand bed or on mortar screed. How to choose between these two techniques of paving?
Paving on a sand bed
This paving technique is mainly used for paving more than 6cm thick and pedestrian walkways.
1. Delimit the paving perimeter and place markers for drawing patterns.
2. Disappear the area to a depth of 15 to 20 cm.
3. Install the sand bed and lady to stabilize it. Do not forget to provide a slight slope of 1cm / m to facilitate the flow of rainwater.
4. Lay the pavers following the layout plan leaving room for the joints: we use blocks of the same size to be inserted between the blocks to always have the same gap.
5. Lady pavingWith the help of the groomer, we cut the pavers to have a flat surface.
6. Join the pavement with sand and water to pack the pavers.
If the soil is loose, it must be stabilized as best as possible before starting the paving:
- Pavement for pedestrians: make a layer of sand and pebbles and compact with a groomer before starting the paving. So you get a stabilized seat, ideal for further operations. Note: a geotextile felt is placed between the underlayment and the pavement to avoid the mixing of materials and regrowth of grasses.
- Paving for cars: the load will be more important, that is why we use a mixture of stones, gravel or crushed bricks on a thickness of 20 to 40 cm.
Paving on mortar screed
This technique is often used to pave a concrete slab - for a terrace, a swimming pool... As well as in the case where the chosen pavers are irregular: the paving on mortar screed makes it possible to adjust the depth of the paving and of the bearing to the differences between the pavers.
1. Clean the concrete slab at the high-pressure cleaner: before starting the paving, make sure that the slab is clean so that the mortar adheres as well as possible.
2. Prepare the mortarmortar is a mixture of cement, sand and water. It is also available ready to use.
3. Lay the pavers: The pavers are placed on a mortar bed 2 cm thick. They must be aligned and tamped by regularly checking the level on the surface.
4. Join the pavement with sand or with mortar joints.
Whatever the paving technique used, the most important is to have a well-defined and stable paving area to receive paving. Care must be taken throughout the installation to ensure that the tiles are aligned according to the pattern and that the surface is flat.