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A good base for your shed is vital, as a poorly built base, or no base at all, can drastically reduce the lifespan of your shed or garden building. We have put together these simple instructions on how you can build a slab base for your shed or garden building that will keep your building in great condition for years to come.

Wondering which size shed is best for you? Please click here to view our range of quality garden sheds or here to view our range of tool sheds.

Step 1: Prepare the Area

Prepare the area where you want your building by measuring out the size of base you need, then start digging to your preferred depth. A 50mm deep layer of hardcore topped with sand is recommended. Create your concrete mixture by mixing four parts sharp sand (or building sand) to one-part cement. Use a trowel to lay the mixture onto the base. Do enough for one slab at a time.

shed base area being measured and prepared

Step 2: Lay the First Slab

Carefully lift the first slab and lay it on top of the concrete mixture

shed base area being laid with the first slab

Step 3: Level the Slab

Use a rubber mallet to tap the slab into position. Take care not to crack the slab. Use a spirit level to check that the surface is flat and level from all angles.

shed base area being levelled

Step 4: Repeat for Each Slab

Continue to lay the slabs whilst checking that the slabs are flat and level with one another. If the slabs are rocking it is best to pick it up and re-lay the slab.

shed base area being completed

Step 5: Leave the Base to Set

Leave the base to set for 24-48 hours before walking on the slabs or having your new building installed.

shed base completed

Step 5: Enjoy your New Building

Enjoy your new garden building for many years to come!

playhouse on shed base

A slab base is the simpliest and easiest way to get a solid base ready for your shed or garden building. These instructions are a great starting point but if you would prefer this work to be completed for you, please don't hesitate to get in touch and we would be glad to help you locate a suitable contractor in your area.

If you found this guide helpful, please check out our blog page for more advice and guides including how to paint a wooden shed.

Posted by Dominic Cross

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