Shed Bases

Building a base for your Garden Building

It is critical that all garden buildings are built on a solid level base. This not only help you build your shed without any issues, but will help prevent future issues and prolong the life of your new garden shed or garden building.

Issues like;

    • Doors dropping
    • Windows dropping
    • Doors & windows becoming difficult to use.
    • Water leakage

 

Should you erect your new garden building on an incorrect base you may find that any warranty provided with your building has been invalidated.

Good Bases

Concrete

What makes it good?
When made correctly it will be very strong and will provide a very level base for your shed. This will last a long time and will help extend the life of your shed as it will help prevent movement in the floor and shed.

Honeycomb & Gravel

What makes it good?
It is fairly cheap to buy and is readily available on Amazon. It can be built quickly and the gravel levels the areas quickly and a level base is key to a good shed base.

Block Paving

What makes it good?
This provides a good solid base that is level and helps prevent floor movement. The gaps between the blocks help provide drainage to keep water away from your base.

Timber

What makes it good?
It is fairly cheap to make and is a good way of getting your base level. It also creates a solid fixing point for your floor boards or flooring batons, depending on how you wanted to put it together. In the example above the horizontal beams will run opposite to the shed floor battens making the platform a solid base to sit the shed on.

Sleepers & Gravel

What makes it good?
Sleepers are very strong and when placed fairly close together, as shown in the image above, the base is very solid and prevents floor movement. 

Paving Slabs

What makes it good?
These tend to be very solid and very flat when installed correctly. Having a level base is key to the life of your shed and this helps prevent movement in your floor.

Plastic Honeycomb

What makes it good?
If you have a hard standing like tarmac, like in the image above, honeycomb plastic as a base on it's own is good as it raises your shed off the ground and help water drain away from your shed and keeps the bottom clear of water. This will help with the life of your shed, however, what it sits on must be level.

Decking

What makes it good?
Decking is good as it has grooves in it for ventilation and helps drain water way. Decking is level when made correctly and is a nice solid base to sit your shed on.

Framed Gravel

What makes it good?
The frame contains the gravel well and lifts the shed off the ground and the gravel helps the shed finds it's level and will always drain very well. It is relatively cheap to install also.

Bad Bases

Honeycomb & Gravel

What makes it bad?
If the gravel is patchy or overfilled you may find that it creates uneven areas on the base,

Paving Slabs

What makes it bad?
If the paving slabs are not well laid and they are not level consistenly across the entire base you get a lot of inconsistencies in the levels of the base which affects how well the shed sits on the base and you will find the floor will rise and fall in places.

Sleepers & Gravel

What makes it bad?
The sleepers must be level and well set. In the example above sleepers are inconsistently placed, not level and not fixed or set in any way. Also, a drawback with sleepers is their height off the ground. If you need to wheel things into your shed this can cause problems.

Framed Gravel

What makes it bad?
In this instance, the framing wood was not connected in any way, the gravel wasn't level and when weight was placed on the gravel it pushed the framing wood outwards. This created a lot of movement in the floor, which will affect the life of the shed. If you want to make a wooden frame and fill it with gravel as a base for your shed use the same sized wood and make sur eth level of the gravel is up to the top of the wooden frame.

Cinder Blocks

What makes it bad?
They can be different thicknesses and they will not sit level if the ground they are sitting on is not level either. The batons on our shed floors are set 12" apart and this type of base cannot guarantee these dimensions and this will create movement in the floor and affect the life of your shed. This is an example of one of the worst shed bases we have encountered.

Grass

What makes it bad?
With the best will in the world your grass will not be level and it will get wet and muddy, which will create a constantly changing floor surface and your floor will often be wet all the time, especially living in Scotland and this will directly affect your OSB flooring.

Dirt

What makes it bad?
Dirt will get wet and turn to mud and your shed will inevitably sink into the mud. If there was land fabric laid over the top of the mud you might get away with it, but this ideally is an absolute no no for a shed base.

Slab Gravel Mix

What makes it bad?
In this case the slabs do not align with all of the battens on the shed floor and the gravel is not raised to the level of the slab tops. This makes the base very uneven and the floor will not sit flat and will move a lot. This would affect the life of your shed.

Timber

What makes it bad?
This base is not adequate for holding a shed. The floor battens would not have any support in the middle of the frame and would make the floor bend and eventually break. If this had supports across the gaps that oppose the direction of the floor battens this would be more suitable as a shed base.

Where to Place a Base for Your Building

There is more to think about when deciding where to put your garden building than you might think. 

There are a few things you will need to pay attention to.

How close are thing like boundary walls, fences and/or other buildings?

Allow room for roof overhang as your shed footprint is likely to be bigger than your base.

Think about being able to access all areas of the shed. During installation you may need to fix shed parts to the back of the shed like finishing strips and fascia boards. Also, you may wish to be able to apply paint or wood treatments to your garden building or shed in the future.

Should you place your base close to trees and bushes, you may end up with problems occurring from overhanging branches. It is good advice to cut these back before erecting your garden shed or garden building and indeed keep them cut back in the future.

Overhanging branches can cause rubbing on the roofing material and may cause damage, leading to water ingress and voiding any guarantees.

How does the shed location affect its use?

When choosing the best location for your base, take into consideration what access is going to be required and what the building will be used for.

Try to visualise what the garden building will look like in the position selected – you may not want to transport large or heavy items into areas of your garden that may be hard to reach.
You may also want to consider an area of the garden where the building is most likely to receive natural light or have a nice view, especially for buildings such summer houses.
If you intend to fit electricity or water supplies to your building, you may need to consider locations that will be suitable for this. Taking into account where the mains supplies are.
How to Construct a Base for your Garden Building