How to put sandstone slabs on sand - a practical guide

Laying of paving on sand

The laying of slabs gravitated on sand is a very easy technique to implement. For paving a terrace, a pedestrian or driveway, laying on sand is the fastest and most economical. It is also possible to replace the sand with gravel to prevent ants from building their anthill and destabilize the slabs in the future.

The best times for paving are when the floor is not too dry or too wet.

Ground preparation

Delineate the outlines of the chosen terrain and dig the pit

Start by delineating the contours of the place where the gravestones are laid with stakes and cords. Dig after the surface determined with the spade to a minimum depth of 10-20 cm in addition to the thickness of your slabs.

Strip the chosen terrain to a depth sufficient to install the stabilization layer

it is recommended to contemplate the place where you will lay slabs

Lay a geotextile film

Arrange in the bottom a non-woven felt or a geotextile film to block the growth of plant roots and prevent sand from leaking into the soil.

geotextile film

the geotextile film is often used to avoid the mixing of materials

Equalize the bottom, remove the roots and stones before laying the geotextile film

place either a geotextile film or a non-woven felt

Put an underlay to stabilize the ground

In the case of a very loose soil think to put a base underlayment. In some cases, especially in the laying of slabs on sand, it is advisable to use crushed stone, chippings or 'all coming' (stones, gravel, broken bricks, mineral rubble ...) as a product of development. level and stabilization. The thickness of the sub-layer is defined by the conditions of the ground and especially by the nature of the support. Nevertheless it should be at least 5 cm.

Stabilization underlayment

for example it's a layer of everything

for example we can ask all-comer to stabilize the slabs

Flattening of the underlay

level the underlayment

Level the surface

Flatten the bottom with a rake, a ruler and a level. Give the surface a slight slope to allow the evacuation of rainwater. Tamp with a manual lady to ensure tiling stability.

before laying sand it is necessary to level the whole

Install rafters and spread sand

Install rafters all around the pit. The top height of the rafters must correspond to the depth where the gravestones are laid. Fill the pit with sand at the top height of the rafters.

river sand

Pass a large metal ruler following the slope created by the parallel rafters to level the surface. Remove the rafters and fill the space left free with sand. Spread the rake by adjusting its thickness on previously stretched cords. Shoot with the ruler.

Laying gravestones

Anchor the slabs in the sand

Begin the laying of the slabs one by one, spacing them approximately 1 to 2 cm apart. Walk on the slabs already laid and use a rubber mallet to anchor them in the sand. Regularly check that the slabs are level.

The sand layer absorbs soil deformations

laying slabs on sand

Gently hammer the surface of the slabs with a rubber mallet

actually you have to put the gravestones one by one

level slabs

Fill the joints

When all the slabs are installed, spread sand, sweep and rain several times to tamp the joints. Remove excess sand or add if necessary.

After installation, it is necessary to fill the joints

if necessary add extra sand

the joints must be filled between sandstones

Indeed, the laying of slabs on sand combines strength of the structure and ease of realization

for example these are already installed slabs

for example it is a terrace of gravelled slabs

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