Shed and Garage Foundations
The foundation of your shed is what keeps the building standing and stable when exposed to wind, weather, and ground movement. Similar to a keel on a yacht, it plays a critical role in the overall performance of the structure.
The additional cost of using more concrete is small compared to the total cost of the building and its contents, but it makes a significant difference to strength and longevity.
Designed for Your Site
Every building we supply includes a full set of foundation drawings designed specifically for your shed and its location on your property. These drawings are straightforward and easy to follow, allowing concrete contractors to complete the work without the need for additional assistance.
Stronger Foundations for NZ Conditions
A building’s ability to withstand high winds and earthquakes comes down to its foundations. Following the Christchurch earthquakes, building code requirements were updated, increasing footing sizes, pile depths, and reinforcing requirements.
Here is an example of a real good shed’s foundation design, the shed slab would have a 100mm 20-25 MPa flat concrete surface, with a 200 x 300 perimeter footing, this might increase to 600mm deep depending on ground condition, your shed will have pads below each portal or upright, the size of these pads range from 450mm to 800mm square for large shed sometimes more.
Find Answers to the Most Common Questions Here
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A standard shed slab is 100mm thick using 20–25 MPa concrete. This is suitable for most residential and home workshop applications such as storage and light vehicle use.
A 125mm slab is common when used for dedicated workshop use, and for heavier workloads like machinery and high traffic 150mmis a better option.
The foundations form part of the shed’s structural design, and each shed comes with specific, builder-friendly foundation plans. The simplest option is to hand these plans to a concrete layer, who can build foundation to a high standard for you. If you want to save some money, you can prepare the boxing and reinforcing yourself, then have a concrete layer place and finish the concrete for you. We strongly you use a professional to place and finish the floor.
Shed Resources
Explore more guides, materials, and technical information to help with your shed project.
