How to Install Decking on Grass in Your Backyard

M. John
Composite decking on grass

Ultradecking can be a beautiful addition to your backyard. With composite decking in your backyard, you can sit comfortably outdoors, prepare a meal, and use the decking as a dining area. You can install your decking on a flat or rough surface. Even if there is grass in your backyard, you can still lay your decking there. Keep reading to learn how to install decking on the grass in your backyard.

decking on grass

Easy Steps to Install Decking on Grass

If you want to install decking on the grass in your backyard, you can do it yourself. Decking is easy to install, especially on the ground. You can install the decking directly on the ground or use a riser or a concrete pad. However, when installing decking on the grass, you don’t place the decking directly on the grass. This is because the decking material can absorb moisture, requiring additional decking maintenance. Here are some easy steps to follow if you want to install decking on the grass in your backyard.

Step One – Gather all the Equipment Needed

Before starting your decking project, you should have all the equipment you will need. Once you have everything you need, installing the decking will be easier and faster. The tools you will need include a pencil, measuring tape, pegs, spirit level, spades, screws, a handsaw, a drilling machine, and a string. You will also need a decking board, either wood or composite decking. In addition, you will need wood to make the deck frames, weed control fabric, and gravel.

Step Two – Prepare the Site

Before you start building the decking, measure the area you want to install the decking with measuring tape. After you have finished taking the measurements, get a hammer and drive pegs into each corner of the deck area. Then, outline the deck area by running a builder line on each peg.

After doing that, use a spade to remove the grass around where you want to place the decking. You don’t want to install your decking directly on the grass. Remove the grass from the area and use a spirit level to check if the area is even. You can now spread weed control fabric on the area to prevent grass from growing. Then cover the site with about 40mm to 50mm of gravel. You will lay the decking frame on the gravel.

Step Three – Install the Boards 

Use tape to measure and mark the deck board at the desired length. Then draw a line across the board with a combination square. Cut your deck boards to the desired length using a hand saw. It is advisable to use treated timber as your deck board. Treated timber has a longer lifespan; it will not rot or decay over time.

After cutting the boards, you can now start attaching the boards to form the decking frame.

Start by securing the outer boards, then attach more boards to the inside of the frame to create a strong framework. Then place the decking joist inside the frame. Ensure that you spaced the joist properly to prevent the decking from sagging.

Step Four – Install the Decking

Once you have finished building the decking frame, start installing the decking on the joists. Fasten the composite decking boards to the joist with a screw. It is important to note that there should be gaps between the boards when installing your composite decking boards. These gaps will allow the decking boards to expand without warping when there is a temperature change. You should leave a space of 5 mm between the decking and a space of at least 15 mm between the decking and the wall.

Step Five – Finish the Decking

Finishing the decking means that you should cover the edges. You can finish the edges using wood decking by smoothing them with a sander before applying an end grain preserver on them. The preserver will protect the decking against rot. For composite decking, you can use a trim board for the edges. You can also paint the edges with a matching colour as the decking.


It’s easy to install decking on the grass in your backyard. You can start by gathering all the equipment needed and preparing the site before installing the joist. After that, you can now install the composite or wood decking.


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