Looking for a faster, stronger, and more versatile alternative to traditional concrete
foundations?
Our Swift Plinth, Piered Plinth 280 & Swift Mini Plinth systems are the original, trusted
solution for creating solid, level bases for garden offices, summer house, log cabins,
modular buildings, glamping pods and timber-frame structures — without the mess,
curing time or cost of poured concrete.
Create reliable, sustainable foundations for your buildings — from log cabins and garden
offices to sheds, decks and off‑grid pods.
From small garden upgrades to full-scale outdoor living projects, Swift
Foundations provides durable, affordable, and easy-to-install solutions that
meet modern garden building standards across England, Scotland, Wales,
and Northern Ireland.
Why choose Swift Foundations?
- We are the UK’s original concrete plinth & EcoBase grid foundation specialists — trusted across the country.
- Our products have stood the test of time - celebrating our 20th anniversary.
- Fast UK-wide delivery and expert support
- Eco‑conscious materials, precision design and long-term performance.
Why choose Swift Plinth systems?
- No digging or wet trades – Install directly on compacted ground or pads.
- Pre-cast & precision-made – Consistent height, shape and structural integrity.
- Perfect for timber buildings – Designed with standard joist sizes in mind.
- Modular & adjustable – Ideal for uneven ground and sloped gardens.
- Eco-conscious & reusable – A low-impact, long-life foundation system which can be reused or moved if needed.
- Time efficient - No Waiting Around - Precast concrete means no curing time – install and build straight away.
- DIY Friendly - No special skills, tools, or experience needed. Anyone can install it!
Our Products
Easy to use, quick delivery and great quality
Swift Plinth
A steel reinforced precast concrete height
adjustable foundation system for garden
rooms and log cabins
Swift Plinth Plus
capable of supporting loads
of up to 2.5 tonnes
Piered Plinth 280
A taller plinth for use on sloping or undulating ground to avoid the need for extensive ground works to level the site first.
Foundation Raft
A ready-to-use building foundation system complete with cut to length timbers creating a suspended floor.
Ecobase Fastfit
for garden buildings.
Ecobase Porous Pavers
Ecobase Porous Pavers for Paths and Driveways have been designed to create a free-draining simple-to-install path…
No Concrete. No Mess. No Hassle
Choose a smart alternative to traditional foundations with our easy install Swift Plinth
Your Builds
Start your project with confidence.
Garden Office Foundations
It s important to preserve your
work-life balance and create a
space where you can work.
Garden Decking & Edging
As the weather warms, give your friends and family a place to gather & admire your garden.
Glamping Foundations
A glamping site is the perfect place to de-stress, hang out, or have an adventure.
Shed Roofs and Foundations
Transform your back garden with the addition of a workshop, a studio, or a sanctuary.
Testimonials
Swift Plinth Foundations
FAQ
Do you have questions?
Can I use Swift Plinth foundations to support my garden building?
Yes! Swift Plinths are ideal for a wide range of structures including garden offices, garden studios, SIPs buildings, modular annexes, and timber-frame constructions. They're engineered to offer strong, stable, and level support, even on sloping or uneven ground.
Can I install Swift Plinths myself?
Absolutely. Swift Plinth foundations are DIY-friendly and designed for easy self-installation. No specialist tools or previous experience are needed — just a shovel, string line, and spirit level. Perfect for self-builders across the UK.
Do I need to level the ground before installation?
No — ground levelling is often unnecessary. Swift Plinths are height-adjustable, making them ideal for sloping, uneven, or undulating ground. For extreme slopes or unusual conditions, get in touch with our team for tailored advice.
Do Swift Plinth brackets only connect to timber?
No. While perfect for timber structures, we also offer bracket solutions for steel ring beams — including box section, I-section, and C-section profiles. Just let us know your frame type, and we’ll provide the correct bracket system.
What are the environmental benefits of Swift Plinths?
Swift Plinths are an eco-conscious foundation solution. They use up to 80% less concrete than traditional bases and are non-invasive, preserving natural soil drainage. They're also removable and reusable, reducing long-term environmental impact.
Can Swift Plinths be installed on any type of ground?
In most cases, yes. Swift Plinths are suitable for solid ground, grass, gravel, and even some made ground. For soft or weak soils, we offer ground reinforcement solutions to ensure safe and even load distribution.
Do plinths have to sit above ground?
Not at all. You can bury the plinths for a lower profile and to minimise visibility. We recommend maintaining a minimum 50mm air gap between the ground and your floor timbers to prevent damp issues and promote airflow
How are Swift Plinths delivered?
Your Swift Plinth system will arrive on a pallet, delivered directly to your property. The delivery driver will place it on your driveway using a pallet truck. You can then unload the components by hand — each part weighs under 29kg for ease of handling.
Do I need building control approval?
Possibly — depending on your project and local authority regulations. If you need building control consent, our expert team can assist you. Contact us today for advice tailored to your site and building type.
What ground types can it handle?
Clay, loam, granular soils—even uneven terrain. The adjustability means small imperfections are manageable. For very poor soils (soft peat, compressible fill) we advise geotechnical guidance. Clay, loam, granular soils—even uneven terrain. The adjustability means small imperfections are manageable. For very poor soils (soft peat, compressible fill) we advise geotechnical guidance.
How do I choose between plinths, rafts and grids?
Choose based on load, ground conditions, and speed needs:
● EcoBase / Grid: fast, lightweight, great for sheds or modest structures.
● Plinth series: for heavier buildings or more demanding use.
● Raft: when you want a full suspended floor ready to take loads and finishes.
