Start with drainage
Water should move away from the shed instead of collecting beneath it. Look at the grade during wet weather if possible. Site preparation can matter as much as the foundation type itself.
Gravel based foundations
A properly prepared aggregate base can provide drainage and a stable working surface for some shed designs. The depth, compaction and edge treatment need to suit the project and site.
Concrete
Concrete can create a durable base or floor, but it requires more site preparation and careful planning. Frost conditions, reinforcement and local rules can affect the design.
Skids and other raised systems
Some sheds use structural skids or other approved supports that keep the floor framing above the ground. The support layout should come from the shed design rather than guesswork.
Match the base to the plan
Do not choose the foundation in isolation. Shed dimensions, weight, floor design and site conditions all connect to the support system. If you are still choosing a design, start with our shed plan guide.
Choose the shed design first so the foundation can be planned around the actual structure.
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