You wouldn’t build a house without foundations first and that will always appear obvious, but the same applies when you’re looking at adding garden sheds to your garden. They will be stronger and exist longer if you place them on a firm base or foundation.

Providing that you are adding timber sheds within the planning permission rules of sizes and location, you can go ahead and lay a base for your wooden sheds without requiring any particular permission from your local authority.

Keeping your shed upright

When wooden sheds sit perfectly on a strong and level base, the joints and structure of the shed can sit perfectly in place. If the base is not level or is perhaps a little wonky, the structure of the shed may be compromised, causing it to become weak and over time, this may cause it to collapse.

You should never place timber sheds directly onto the ground, because the ground becomes damp and this damp will then gradually work its way, unseen at first, into your garden sheds. The damp will eventually turn into rot and the structure will begin to collapse from the bottom up.

The best base for any garden shed will be linked to the reasons and uses you put the shed to. If it’s just for storing a range of garden tools and no particular heavy items, you may be able to place it directly onto concrete garden slaps, providing you can place them extremely level.

Buy or make your base?

You can purchase a base made purposely for your specific timber shed from a number of manufacturers, but where the base is made of wood, it will need to be treated to stop it becoming susceptible to damp and wood eating bugs. Some companies will sell you a metal foundation base, which again, will need treating against the damp, but should last for a number of years.

A 4 or 6 inch concrete base will provide the sturdiest of finishes for any wooden sheds. Providing your concrete base is put onto a firm part of your ground, it will last you for many years and provide the perfect foundation for your timber sheds.

Where you have decided to build a concrete base for your garden sheds, the task will be much easier finished if there are at least two of you to complete the task. Mixing the sand cement and stones required to make a firm foundation is easier if you have a concrete mixing machine, but the old fashion way of using a shovel still works well for most people and is good exercise.

A foundation base works best if it is larger than the size of wooden shed so that it can be placed on top of it, and it is easier to clean and keep clear around the edges when your wooden shed kit is completed.

You will want the finish for your foundation to be above the ground level so that water, whether it is pooling or just in the ground, can’t have the opportunity to gain direct access to your wooden shed. This means that you will probably be digging down into the ground and filling any soft areas with hard-core before you add your concrete base. By using planks of wood or panels from feather edge fencing, around the edges, you can build a tidy area into which you will be placing the concrete as you make it.

Your new best friend will be a large spirit level that will agree that your foundation’s finish is extremely level so that your garden sheds can sit on it easily and evenly.