Size the Slab to the Shed
The slab should generally match the shed footprint, often with a small margin to catch the door threshold cleanly. Manufacturer specifications usually list a recommended pad size.
Thickness
Thickness depends on shed size, stored contents, and site conditions. A garden shed and a shed used for heavy equipment aren't the same specification.
Base Preparation
A well-prepared base carries the slab and reduces settlement risk. Grading, base material, and compaction all matter here.
Slope Away From the Shed
A subtle slope away from the shed keeps water from pooling at the door. It also helps rain shed off the pad rather than sitting on it.
Door Threshold
How the slab meets the shed door affects how easily equipment or a mower rolls in and out. A ramp lip or level threshold — plan it before pouring.
Anchoring
Many sheds get anchored to the slab. If that's the plan, the shed's anchor pattern is worth referencing during the pour.
Ready to talk about your project?
See Concrete Slabs