Description

Save on our 3.5m Thermowood Barrel Sauna — a complete sauna package with your choice of premium heater included. Limited time offer while stocks last.

3.5m Thermowood Barrel Sauna

Outdoor Barrel Sauna | Complete Sauna Package | Wood Fired & Electric Heater Options | Seats 5-7

Experience the authentic warmth and relaxation of a traditional wood fired sauna with our 3.5m Thermowood Barrel Sauna. Designed to provide a spacious and comfortable sauna experience, this model offers a perfect balance between generous seating and efficient heating — and with a range of door, window, glazing, heater and lighting options, you can configure it exactly the way you want. With a maximum internal sauna volume of approximately 8.84m³ or 11.74m³ for the larger diameter model (based on the full cabin length with the optional changing room omitted), the barrel design allows the sauna to heat up quickly while maintaining excellent heat circulation throughout. Opt to keep the standard changing room and the sauna space reduces accordingly — still beautifully usable, just with that dedicated dry-changing zone. The curved structure promotes natural airflow, helping groups looking to enjoy a traditional sauna experience in their own garden.

Choose Your Diameter

Available in two diameters to suit your space and preference:

• Ø 1.97m — the compact option, perfect for tighter garden spaces
• Ø 2.27m — the larger option, giving extra headroom and a more spacious feel

Floor Plan & Dimensions

Plan your space with confidence — here’s the full floor plan and elevations for the 3.5m Thermowood Barrel Sauna:

Dimensions shown for the Ø1.97m model. Ø2.27m also available — please contact us for the larger floor plan.

Built-in Changing Room — Standard, but Optional

Your 3.5m barrel sauna comes from the factory with a built-in changing room as standard — perfect for getting changed in comfort, hanging your robe and keeping your essentials dry. But if you’d prefer to maximise your sauna space, you can choose to omit the changing room at no extra cost — giving you the full 2.9m of cabin length and the larger volume quoted above.

Just let us know your preference at checkout or get in touch when ordering.

Premium Thermowood Construction

Built from 46mm Thermowood pine staves — heat-treated for exceptional durability, dimensional stability and resistance to the British weather. Thermowood is the gold standard for outdoor saunas, offering:

• Superior weather and moisture resistance
• Reduced shrinkage and warping
• A beautiful, warm honey colour that ages gracefully
• Long-lasting performance with minimal maintenance

Your Free Premium Bundle — Included as Standard

Every 3.5m Thermowood Barrel Sauna comes with everything you need to start enjoying it straight away — no hidden extras:

• Sauna heater of your choice (see options below)
• Sauna stones
• Stainless steel chimney (for wood-fired heaters)
• Wooden bucket & ladle
• Thermometer / hygrometer
• Wooden back rests
• Finnish bitumen shingle roof
• Internal lighting
• Sturdy treated timber support cradles

Select Your Perfect Choice of Heater

Simply select your preferred heater from the options depending on your preferred use & preference. We’ve hand-picked five crowd-pleasing options — easy to use, easy to install and fool-proof:

• Harvia M3 — Traditional, Tried & Tested Wood Burning Sauna Heater
• Harvia M3 SL — Externally fed version of the M3, great for commercial operation & keeping it clean & tidy inside
• Harvia Spirit — Modern Electric Heater with Harvia Reliability
• HUUM Drop — Designer Electric Heater (smart-app compatible)
• HUUM HIVE Flow Mini — Compact Elegant Wood Fired Heater with Huge Stone Capacity

Customise Your Sauna

🎨 Shingle Colour

Choose from five finishes for your Finnish roofing shingles:

• Red
• Grey
• Green
• Black
• Wooden shingles (premium upgrade)

🚪 Door Style

• Standard wooden door with window
• Wood-framed glass door with lock
• Frameless tempered glass door

🪟 Front Wall Glazing

• No windows
• Two small windows in the front wall
• Panoramic glass front wall

🌅 Rear Wall Glazing

Make the most of your garden view from inside the sauna:

• No windows
• Two small windows in the rear wall
• Half-glass panoramic rear wall — a stunning half-circle of tempered glass that floods the cabin with natural light while keeping the lower bench area private (as featured in our customer photos)
• Full-glass panoramic rear wall — uninterrupted garden views from inside the sauna, complete with safety fence

🪑 Bench Layout

• Standard layout: two straight benches running down either side with the heater positioned centrally at the far end
• Wrap-around layout: benches joined across the rear wall with the heater sunk into the bench arrangement — a beautifully modern look (electric heaters only — wall-mounted or freestanding; log fired heaters must be side mounted for safe operation)

💡 LED Lighting

Add atmospheric lighting to your sauna with a sauna-rated LED kit:

• White LED — clean, soft and traditional
• Colourful (RGB) LED — set the mood with your choice of colour
• Smart control with HUUM — if you choose a HUUM electric heater, you can control both your lighting and your heater from a single app or control panel
• Dimmer with remote available for non-electric heater setups, or a simple switch if you prefer

Finnish Roofing Shingles

All of our barrel saunas are finished with high-quality Finnish roofing shingles, designed specifically for the demanding conditions of Nordic climates. These shingles offer excellent weather protection, long-lasting performance and a clean, traditional finish that complements the natural Thermowood beautifully.

Delivery & Installation

Your barrel sauna will be delivered & Installed by our professional installation team. Lead times are typically 6–8 weeks from order and our team will deliver in large Sprinter type vans. For delivery only you will be contacted for preferred delivery type, whether palletised for forklift unloading, assembled for HIAB crane or forklift unloading or by Crane delivery if required and arranged. Full assembly instructions are included, and most customers complete the build in a weekend with two people.

Looking for a specific configuration that isn’t listed above? Give us a call or drop us an email — bespoke specifications are available on request.