Shed Base

Having a shed base is a crucial part of your pub shed.

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Why should I build a shed base?

It’s really important that your shed has a solid foundation so a base is vital.

Without it, it’s likely that the shed will not be assembled correctly and is more than likely to deteriorate in the future.

Where should I build a base?

You may need to do some maintenance in the future on your shed or apply a wood treatment so don’t build a base too close to a fence or a tree.

Are you intending on running an electricity and/or water supply to the shed?

These are some things you may need to think about when positioning your shed.

What types of bases are there?

There are 3 main types of bases

  • Timber Bearers
  • Concrete
  • Paving Slabs

It’s essential that your shed has a dry and level foundation. If you try and assemble a shed on an unsound base, you run the risk of the screw holes connecting the wall panels not lining up correctly.

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How to build a base

So now we’ve worked out why it’s important to build a base and we’ve found an area to build the base and we know what type of base we are going to use, now it’s important to work out how to build it.

How to build a timber bearer base

Using pegs and string, mark out an area 2 inches larger each side than the shed size.

Measure the area diagonally across both sides to confirm your area is square and not slanted.

Remove any vegetation and dig out the area so it’s 2 inches deep. Once you have done this you can remove the pegs and string.

Within the dug out area, add about 1.5 inches of soil or gravel. Then use a rake to level it out. You may want to use a spirit level as well.

Lay the timber bearers across the gravel or soil. These should be spaced equally at intervals of between 400mm and 600mm.

Make sure that all the timber bearers are level. You can use a spirit level to do this.

Depending on the size of your shed, you will need different amounts of bearers.

  • 6×4 garden building – 4 bearers at 1150mm (4ft) long
  • 7×5 garden building – 4 bearers at 1450mm (5ft) long
  • 8×6 garden building – 5 bearers at 1750mm (6ft) long
  • 10×8 garden building – 6 bearers at 2350mm (8ft) long

Shed Base

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How to build a concrete base

Using pegs and string, mark out an area 2 inches larger each side than the shed size.

Measure the area diagonally across both sides to confirm your area is square and not slanted.

Remove any vegetation and dig out the area so it’s 6 inches deep.

To contain the cement you will need to create a timber framework to line the edges. You need to ensure this is sitting flat so use a spirit level to check this. You can also use a rake and a spade to flatten out the surface.

Add 3 inches of hardcore and level off with sand.

Once you have done this you can remove the pegs and string.

You can now add the concrete. Spread evenly and level off. Cover with a sheet and allow the concrete to dry naturally.

When the concrete is set, it will be firm and dry.

How to build a paving slab base

Using pegs and string, mark out an area 2 inches larger each side than the shed size.

Measure the area diagonally across both sides to confirm your area is square and not slanted.

Remove any vegetation and dig out the area so it’s 2.5 inches deep.

Once you have done this you can remove the pegs and string.

In the dug out area, lay approx 1.5 inches of 1 part cement to 8 parts sand.

Level off with a rake and a spirit level.

Starting at a corner, lay the paving slabs and tap them with a rubber mallet. Continue until all the slabs have been laid.

Use a spirit level to ensure all the slabs are level.

Brush off any excess cement and sand mix.

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