A slide is one of the most common features on a children’s playground. It is basically a smooth slope with ladder on one end, soft landing surface on the other and slightly folded sides to keep the child from falling over. Slides may be simple and straight but can also have a more elaborate, wavy or spiral shape. While slides in public playgrounds are mostly made of composite materials, plastic, fibreglass and metal, a garden slide is best made from wood and metal.
- Skill level:
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Things you need
- 90 by 120 cm (3 by 4 foot) timber
- 60 by 120 cm (2 by 4 foot) timber
- 30 by 120 cm (1 by 4 foot) timber
- Spray paint
- Hole digger
- Fast-setting concrete
- Wood braces
- Power drill and screws
- Plastic handles
- Metal tube
- Plastic slope element
Cut thick 90 by 120 cm (3 by 4 foot) wooden posts for the slide’s supporting structure. Measure and mark height of the posts from the ground to the platform at the top, but also add 90 cm (3 feet) for the foundation. Use a power saw and cut four identical wooden posts for the platform.
Mark the four posts on the ground with spray paint where you are building the slide. If there are any obstructions on the ground, such as plants and rock, remove them before installing the slide. This structure will be dug into the ground and is thus semi-permanent and immobile, so choose the location wisely.
Dig four holes in the ground, in the places you marked. Use a hole digger for this task or a pointed shovel. Make the holes around 90 cm (3 feet) deep and the same in width.
Pour around 12.5 cm (5 inches) of fine gravel into the hole. Place the post into the hole and screw in the wooden braces to support the post. Pour fast-setting concrete around the base of the post. Be sure to leave around 12.5 cm (5 inches) of space to cover with soil later. Use a level to ensure that the posts are absolutely vertical. Repeat for all four posts and leave the concrete to cure for around six hours. Then attach horizontal 60 by 120 cm (2 by 4 foot) wooden elements around each post to connect them and create a ring that makes the whole construction rigid and stable.
Construct the platform at the top of the four posts. Use 30 by 120 cm (1 by 4 foot) timber and 60 by 120 cm (2 by 4 foot) wooden boards and deck boards to assemble a sturdy and secure deck. First make a frame from the thicker boards and then add the thinner boards for the floor, across the frame. Attach the elements with screws and then mount the whole deck on to the wooden ring.
Add a rail and pickets to the edges of the deck, using 90 by 120 cm (3 by 4 foot) timber for four corner posts,60 by 120 cm (2 by 4 foot) timber for the top and bottom rail and 30 by 120 cm (1 by 4 foot) timber for the pickets. Make a hole on the side of the slide, adjusted to the age of the child. On the opposite side, make the same hole, with or without the top rail.
Attach a plastic slope below the hole in the hand rail, making sure to mount it securely and firmly to the deck. These ready-made plastic elements can be bought in a garden centre and usually come with an installation kit as well. Use the screws from the installation kit and follow the instruction for attaching the slope to the deck.
Add a small ladder on the opposite side and little plastic handles on the hand rail above the ladders, to assist the children when climbing on the deck. Note that the ladder can be gently sloped or vertical. Also, add a metal tube at the top of the hole above the slide itself for the child to hold onto before sliding down.
Treat the wooden surface of the structure with wood primer and wood paint of your choice.
Tips and warnings
- Paint the wooden structure of the slide in a bright colour to match the brightly coloured plastic slope element.
- Do not spray silicone over the slide’s plastic surface, since it might make the child go too fast down the slide, resulting in injury.
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