
Do I Need A Shed Base?
Yes, you certainly need a shed base.
It is false economy to place a new shed directly on top of soil or grass.
Building or buying a shed base is essential because it helps ensure the longevity of your shed.
Purpose of A Shed Base


A shed base, whatever material it’s made from, needs to achieve 3 things:
1. Make the ground level
2. Support the weight of the shed
3. Allow air to circulate beneath the shed
Providing this is done, it will help keep the shed’s interior dry, prevent rotting, allow the door to open properly, and keep the shed firmly in position.
Preparing the Ground for A Shed Base
Clear vegetation, rocks and stones from the area in question.
Mark the size of your shed, plus an extra 20cm on each side, using string and pegs.
Then use a shovel to dig a 6cm-deep hole in the marked area. This provides the necessary depth to create a hard, level surface.
Your shed will need a hard, level base, otherwise the frame will distort and the door won’t open properly.
If your shed includes bearers, you can place it directly onto this surface.
The bearers will further protect the shed from moisture damage and create the space for air to circulate.
Building Different Types of Shed Base


Concrete Shed Base
Shovel a mixture of 8 parts sand and 1-part cement into the hole.
Evenly distribute the mixture with a rake until it looks level. A spirit level ensures greater accuracy.
Use wooden shuttering to keep the concrete in a fixed state before it sets, and before weight is placed on top of it.


Slab Base
Paving slabs are an easier way to create a solid foundation. They need to reach just above ground level to ensure efficient rainwater runoff.
Starting in one corner, use a rubber mallet to hammer down the slabs and get the surface as even as possible. Sand placed underneath the slabs can help rectify any problems on this score.
Again, using a spirit level is a good idea.
Wooden Shed Bases (Including Garden Decking)
Take a look at our video for a visual guide on building a wooden shed base:
Wooden garden decking achieves the same solid, level base.
Plastic Shed Bases
Plastic shed bases are a very popular option as they are the easiest to prepare.
In combination with shingle, they create a hard, level surface for the shed, and allow for excellent water drainage too.
Plus, plastic shed bases can always be reused if you move your shed.
Take a look at our ProBase Shed Bases. They are expertly made, eco-friendly and come in an extensive range of sizes.






Frequently Asked Questions
What is a shed base kit?
A shed base kit is a tough plastic interlocking grid system that you can lay over the grass to create a solid, level, vertical surface to put your new shed on. Our ProBase plastic shed base kits are available in various sizes and are easy to assemble and lay. The shed base kit has ventilation and a heavy membrane to stop weeds and moisture from getting into your shed. It also spreads the weight of your shed evenly, so it will not sink or shift over time. By using a shed base kit, you will keep your shed secure and protected no matter what the ground conditions.
What base do I need for a shed or garden building?
A shed or garden building needs a base; that is one thing we can say for sure. The kind of base depends on a few factors. What sort of ground will your shed sit on? If you have very wet soil, clay, or ground that lacks adequate drainage, you may install concrete hardstanding or concrete slabs. If you are installing your shed or garden building on grass, then you need a plastic grid, concrete, stone, decking or wooden base.
Are concrete bases for sheds a good option?
Concrete bases for sheds are the best kind of base for shed stability and durability. However, if you do not have the time or resources to lay a solid concrete base, then a base made of concrete or stone slabs is just as good. You can lay shed bases made of plastic and filled with gravel to give it weight and drainage. Decking is another stable base for your shed. The bigger the shed or garden building, the more robust the base must be.
Contact Us
If you have any further questions about preparing your shed base, please don’t hesitate to contact our UK-based experts on 0333 003 0518 or send us a message using our contact us form.