Garden Shed Base Kit – No Concrete or Digging Required
Swift Leveller is a trusted UK supplier of innovative shed and garden building levelling solutions designed to make installation faster, easier and more reliable. We offer a range of adjustable levelling products that provide a solid, stable base without the need for concrete or digging. Our core range includes the Flexi, a versatile all-rounder ideal for most standard garden buildings; the Mini, perfect for smaller sheds or confined spaces; the Max, built for heavier structures that need extra strength; and the XL, our most robust option for larger or commercial-grade buildings.




Screw the head u channel of the Swift levelling device to the frame at equal intervals. Complete this for the whole frame.

Flip the timber frame over so that the bases point to the floor. Slide the templates to the ground and pin them in position.

Move the frame leaving the templates in place, and drill the large centre holes in the ground.

Insert the base plates into the ground. Position the heads and frame over the large centre holes and drop into place.

Adjust each head to the required height and tighten each nut to secure the frame. Use a spirit level to check, and adjust if necessary.
Shed Base Leveling Kit
Building a stable shed base doesn’t have to be difficult or time-consuming. Our Garden Shed Base Kit is a smart, no-dig solution that gives you a level, durable foundation in a fraction of the time it takes to lay concrete. Designed for convenience and long-term reliability, each base is fully adjustable to suit uneven ground, completely reusable and made from weather-resistant materials built to last. Whether you’re installing a small garden store or a large outdoor workspace, we offer four tailored options to suit every need: the Flexi for everyday use, the Mini for tighter spaces, the Max for heavier structures and the XL for large or commercial-sized buildings. To avoid costly repairs from rot or damp, it’s important to understand how poor shed foundations can lead to long-term damage.
Each Garden Shed Base Kit comes complete with all the essential components you need to create a solid and level foundation straight out of the box. Designed for quick and easy installation, the shed base levelling kit takes the guesswork out of building a base and gives you the flexibility to suit a wide range of shed sizes. Depending on your requirements, kits are available in packs of 4, 6, 8, 10 or 12.
• Precision-engineered adjustable levellers,
• Heavy-duty fixings for secure installation,
• Easy-to-follow instructions for a smooth setup,
• Optional add-ons and accessories are available for bespoke configurations or added stability,
Choosing the right Garden Shed Base Kit size is key to ensuring your shed has the strength and stability it needs. As a general guide, the larger and heavier your shed, the more levellers you’ll require to distribute its weight and support the structure over time evenly. Lightweight garden stores or tool sheds often need just 4 or 6 levellers, while larger workshops, summerhouses or insulated garden rooms may require 10 or 12 for extra reinforcement. If your building has a timber base or bearers already in place, this can also influence how many shed base supports you’ll need. To make it simple, we recommend using our size guide chart to match your dimensions with the right shed base levelling kit.
Shed Base Supports
With years of hands-on industry experience behind every product we create, we’re proud to offer a practical, high-quality garden shed base kit trusted by tradespeople and homeowners alike. As a sister company of Isaac Granger’s—a name known for precision engineering and reliable craftsmanship—we bring that same level of expertise to every leveller and kit we manufacture. Our products are designed in the UK, thoroughly tested for durability and built to perform in real-world garden settings. We understand the challenges of creating a stable base on uneven ground and have refined our kits to be as user-friendly, adaptable and long-lasting as possible. When you choose us, you’re investing in proven quality with a personal touch.
Not sure which Swift Leveller kit is right for your shed or garden building? Our team is here to help you find the perfect fit based on your structure, ground conditions and layout. Get in touch today for friendly advice and tailored product recommendations.