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All Metal Sheds from SHEDMASTER come with full instructions and are designed to be home assembly. You may however, choose the SHEDMASTER professional metal shed installation service to save you the time and effort of assembling yourself. Whichever decision you make, please read the following advice.

Before taking delivery of your new metal shed.

Before taking delivery, we recommend that all storage sheds are situated on a firm, flat, level base. Ideally, this should be 50mm concrete or flagstones (patio). You will notice all of the products on this website site have a “base size”, this is the minimum level base size we feel is appropriate for each product. A firm, flat base will ensure doors open cleanly and will make assembly of the units much easier.

The location of your shed is also important to ensure the ventilation system works as designed. Please ensure your shed is suitably away from plant life and walls to minimise shed condensation.

Please note, if your base isn’t suitable to build on when the SHEDMASTER shed installation teams arrive and you ask to proceed against our advice, you may be asked to sign a disclaimer.

Why does the shed base need to be bigger than the shed?

All metal sheds feature an integral metal base so can be bolted down to a concrete base as an added security measure. If the shed base is built to the exact size of the shed and you attempt to bolt the shed down, the impact of the drill can cause the concrete below to break and crumble.

We highly recommend the base size need to be exactly the same size as the roof or larger.

Our recent Metal Sheds Installations are below:-

Yardmaster 6′ x 4’5″ Apex Metal Shed – Emerald (Installed by SHEDMASTER April 2023)


Outsunny 6.5’x4′ Metal Pent Garden Storage Shed with Foundation Grid – Olive Green (Installed by SHEDMASTER April 2023)


Outsunny 9ft x 6ft Metal Garden Shed – Green with Foundation Grid (Installed by SHEDMASTER April 2023)


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