How to Build a Concrete Shed Base: Complete DIY Guide 2026
Matt W · 25th Jul 2025
A concrete shed base is a 100 mm thick slab of C25-mix concrete poured over 75 mm of compacted MOT Type 1 hardcore. It suits sheds up to 3 m x 2.4 m on level ground. This guide covers the full process: excavation, formwork, mixing, pouring, and curing. Written by installers who lay concrete bases every week.