How to build a sandpit

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A sandpit in the garden is a lot of fun for children and parents alike. You can choose a ready-to-use solution or you can do the job yourself. Then you can make it in the size that best fits your garden.

Required materials
– Planed garden planks
    Impregnated for resistance to rotting, fungus and insects
    Size 142 mm x 1800 mm long, thickness 16 mm
– Fence posts for the 4 uprights: 65 x 65 mm, 240 cm long
– Anti-root membrane and sandpit sand
– For extra protection: hardwood oil or varnish

  1. Find the best location

    The sandpit shouldn’t be exposed to full sunlight. The best location is half in sunlight and half shaded. But it also shouldn’t be in a dark corner, or in a moist location. The sandpit is usually a place where children are running around with a lot of activity. It’s ideal to have a shock-absorbent path made of rubber tiles around the sandpit. Also remember that dogs and cats love sandpits, so make sure you can cover the sandpit with a cover or tarpaulin.

  2. Dimensions

    A sandpit is mainly there for young children, so it’s only temporary. Of course the size has to be matched to the available space in your garden. If you want to make the sandpit higher, you can simply use more planks. But don’t make a sandpit for small children too large – they often play alone, and can feel lost in a large sandpit.

  3. Digging out the ground

    To start with, you need to mark out the perimeter of the sandpit with small posts and string. Dig out around the edges with a spade and then finish digging out the whole area to a depth of around 20 cm.

  4. Anti-root membrane

    Make sure the bottom of the sandpit is flat, and remove any roots and stones with a shovel. Line the dug-out area with ant-root membrane. The big advantage of this material is that it allows rainwater to drain away but stops weed growth.

  5. Building the walls

    Saw the planks for the side walls and the fence posts to the desired size. Drive the posts into the ground at the corners, and fit the planks to the posts. Pre-drill the screw holes to prevent splitting. Each side consists of 3 or 4 planks of the same length. Use 4 planks to make the top edges of the sandpit, and saw the ends at 45° so they fit together neatly. Screw the edge planks firmly to the tops of the fence posts.

  6. Making a cover

    You want to be able to cover the sandpit to keep dogs, cats and garden debris out. Fix the planks at right-angles onto 2 similar planks (or narrower fence posts), with a gap of about 1 cm for ventilation. If you make the cover in 2 parts it’s easier to lift it off and replace it.

  7. Finishing

    Treat the wooden planks and posts with a protective varnish for a longer lifetime.

  8. Filling

    Place the sandpit on the ground so it is level, and fill it with sandpit-grade sand. 12 bags of 25 kg is enough for a sandpit of 1.5 m x 1.5 m. You’ll need to replace the sand regularly for hygiene reasons.


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