Industrial strength. Finnish soul.
Container Sauna
Built in Suffolk and installed across the UK, our container saunas are designed for gyms, hotels, wellness venues and operators who want a permanent, high-performing installation.
“We build commercial-grade saunas. That's our thing.”
The designs
Every one built by hand in Suffolk.










Built to last
Handmade in Suffolk, made to last for years, if not decades.
Every container sauna is built by hand in our Suffolk workshop, tested before delivery and designed to take years of daily use in commercial settings. Built using repurposed shipping containers finished with premium thermo aspen lining and top-of-the-line Finnish sauna heaters. Available in 10ft (6–7 person) and 20ft (14–16 person) formats, with a choice of bench layouts.
Layout options
Choose the layout that fits your space.
1 / 210ft: Tiered bench
Tiered bench layout in a 10ft container. Window in the door wall.
Approx. 3m × 2.4m (10ft container)
1 / 210ft: L-shape benches
L-shape bench layout in a 10ft container. Window can be relocated to the side wall.
Approx. 3m × 2.4m (10ft container)
1 / 220ft: Tiered benches
Tiered bench layout in a 20ft container. Windows and door in side wall.
Approx. 6m × 2.4m (20ft container)
1 / 220ft: Parallel benches
Parallel facing benches down both long walls of a 20ft container, with the heater in the far corner. The most social arrangement for big groups.
Approx. 6m × 2.4m (20ft container)
Specification
Container Sauna
- Capacity
- 6–16 people
- Dimensions
- 10ft or 20ft container
- Lead time
- Tell us when you need it open, and we'll explain the lead time against that date.
- Build time
- 12–20 days
- Built
- To order, in Suffolk
- Pricing
- 10ft from £30k · 20ft from £45k
A guide price for a UK-built unit, excluding VAT. Delivery is priced by where you are. We don't itemise: tell us your spec and we'll quote it properly.
What's included
Build quality
- Premium thermo aspen lining
- Relocatable, can be moved to different sites
Heating & performance
- Narvi heater included as standard
Lighting & ventilation
- LED under bench lighting
- Window as per plans above
Warranty & support
- 12-month warranty on the sauna build
- Heater manufacturer warranty (1 year)
- Spare parts available
Make it yours
- Wood-fired vs electric heater
- Heater upgrade
- Solar upgrade
- Glazed wall (10ft)
- Window relocated to side wall (10ft)
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“The nice thing about us both operating and building saunas is we've done it for five years now. We've made the mistakes so you don't have to.”Tom, founder
Hot. Cold. Rest. Repeat.
It's not the box. It's what happens inside it.
Step in, slow down, come out better. True rest, maybe the first time someone has sat down that day, belly laughter and connection. This is the bit the spec sheet can't show you.
Use it for
Where the container sauna earns its keep.
See how real operators run theirs, read the Sauna Stories.
Common questions
Can I visit the workshop or try a sauna before I buy?
Yes. You can visit our workshop in Suffolk, or we can send you a video walk-round. To sit in one first, find a sauna near you on our map that is open to the public, and book a session like any other guest. Ask through the build enquiry form and we'll arrange it.
Do you build indoor saunas?
We get asked this a lot, and the answer is no: we build outdoor saunas only. Fresh air on your face when you step out is half the experience; even a view of the sky in the middle of a city changes it. However nice an indoor sauna is, that sense of escape is what's missing. Every build we do, covered or not, keeps that connection to the outdoors.
How long does a sauna build take?
Every sauna is built to order, and the workshop queue changes month to month, so we don't print a fixed lead time. Tell us when you need it open, and we'll explain the lead time against that date.
Do you deliver outside Norfolk/Suffolk?
Yes. We deliver across the UK. Delivery costs depend on location. International shipping can be arranged. Contact us to discuss.
What warranty do you offer?
All our builds come with a 12-month structural warranty. Heaters are covered by a 1-year manufacturer warranty. Spare parts are available, and there is an optional care plan: two site visits a year, with video calls in between.
What is the order and payment process?
Get in touch via our build enquiry form, or email builds@saunabox.co.uk if you'd rather not fill in a form. We arrange a short call to go through your project, then send you a personalised quote. 70% on order secures your workshop slot, with the remaining 30% on delivery; we send progress photos as we build and confirm a completion date; final payment is taken on completion, along with a handover on using your sauna, and business tips, if relevant. Financing is also available, spread over three years, from about £1,100 a month for a 10ft container and about £1,300 for a horsebox.
Wood-fired or electric heater, which is best?
It's a personal choice based on how and where you'll use the sauna, and both let you pour water on the rocks. Wood-fired is the more traditional, romantic option and ideal for off-grid sites. Electric is the more convenient choice, with app control and timers.
How long does a sauna take to heat up?
Typically 45 to 90 minutes, depending on the sauna design, its size and the heater you choose.
Is the horsebox sauna road-legal?
Yes. It's built on an Ifor Williams 510 trailer or similar and is fully road-legal, so once it's yours it can go wherever a vehicle can tow it, whether that's a permanent pitch or a one-off event.
Can the container sauna be relocated once it is installed?
Yes. Unlike a permanent build, our container saunas are relocatable, so if you move site or your plans change, the sauna can move with you rather than being written off.
How long will my sauna last?
Our saunas are built to last for years, if not decades, when well maintained. Longevity depends a lot on the setting (coastal, woodland, garden) and how it's looked after.
What maintenance is required?
Fairly minimal. Clean with warm soapy water (an eco dish soap) and a microfibre cloth, and bake the sauna dry after each session (heat for around 30 minutes). Oil the benches as they need it: under heavy commercial use, at least every three months, sanding first if they need it. Once a month, take the stones out and hoover under the heater's little hatch, which keeps the air flowing, and check the stones while you are there: if they crumble or sound hollow when you knock them together, replace all of them, not just the top ones. Wood-fired heaters also need a chimney sweep.
However you’ll use it
One sauna, two ways forward.
Also consider
The other build
One of ours, in the wild
The Hidden Sauna Club, North Norfolk
A 10ft container sauna we built for the Wild Luxury glamping site at Drove Orchards, Thornham: Huum electric heater, thermo aspen interior, a picture window in the door wall and a larch frontage, with two beautiful cold plunge tubs alongside.
"Beautiful setting, lovely sauna and cool pools!" Google review, Eliza Talbot-Williams. 5.0 across 43 reviews.Go and see it for yourself at hiddensaunaclub.com