Sauna Lumi

Pitched-roof sauna with painted exterior

Prices from

£10,395 inc VAT & Delivery Included
STEP 1 OF 1

Choose your installation

Choose your timber colour

Natural Spruce

Choose your roof shingles

Terracotta

Umber

Forest

Graphite

Onyx

Choose your sauna heater

Buy together
Modular Garden Sauna Lumi — 2–3 Person Painted Spruce Insulated Sauna, Full Front Glass & LEDs, 3.55m²
Water Tank for Wood Burning Sauna Heaters — Off-Grid Hot Water

Choose your add-ons

Product information

A modular sauna sized for everyday use, not just occasional weekends. Lumi gives 3.55m² of relaxed layout in pre assembled Spruce sections, slightly more generous than the Cube version while staying manageable for most gardens. Solid timber construction holds heat efficiently through every session. A sensible middle ground between the smallest and largest modular options, built for regular rather than occasional use. The Spruce structure is supplied with its exterior factory-finished in painted black.

Natural Nordic Spruce

Natural Nordic Spruce

Built for Every Season

Built for Every Season

Everything You Need to Install

Everything You Need to Install

Designed for Fast Heat-Up

Designed for Fast Heat-Up

Specifications

  • Shape: Square
  • Accommodates: 2-3 People
  • Footprint: 234 x 249 cm
  • Max Height: 244 cm
  • Floor Area: 3.55 m²
  • Material: Spruce
  • Main Door: 179 x 70 cm
  • Front Wall Glass: Front wall glass
  • Glazing: Tempered Glass
  • Assembly: Factory assembled
  • Insulated: Yes
  • Design Note: Only factory assembled and insulated; LED lights included as standard
  • Power Supply: Single or Three Phase
  • Heater Compatibility: Electric & Wood-Fired
Free Mainland UK Delivery Naturally Insulating Spruce Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Naturally Insulating Spruce Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Naturally Insulating Spruce Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
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Designed around your ritual

Full Glass Back Window

Full Glass Back Window

Bring the outdoors in. A full glass rear window fills the sauna with natural light and opens up wider scenic views.
Half Moon Back Window

Half Moon Back Window

Privacy meets natural light. A half-moon rear window creates a softer, brighter feel while keeping more enclosed wall space.
Full Glass Front Barrel

Full Glass Front Barrel

Turn every session outward. Full front glazing opens the barrel sauna to natural light and uninterrupted outdoor views.
Full Glass Front Cube

Full Glass Front Cube

Modern design, open views. Full-height front glazing creates a brighter, cleaner space with a sharper architectural finish.
LED Lighting Kits

LED Lighting Kits

Set the perfect mood. Integrated LED lighting creates warmth and atmosphere, transforming the sauna experience day or night
Bluetooth Speakers

Bluetooth Speakers

Soundtrack your downtime. Built-in Bluetooth speakers bring music, podcasts, and guided sessions straight into your sauna.
Quality Accessories

Quality Accessories

Complete the experience properly. Practical finishing touches that improve comfort, convenience, and the overall sauna ritual.
Premium Thermowood

Premium Thermowood

Built to age beautifully. Thermowood offers a richer finish, stronger durability, and better long-term performance.

From Your Sketch
To Reality ✏️

A sauna built entirely around your space, your ideas and how you want it to feel.

Send us your hand-drawn sketches, and we’ll turn them into detailed CAD designs ready to bring your vision to life.

Chat With Us →
Bespoke wood-fired sauna and wellness space
A well laid out compact sauna does real work for regular personal or couple's use, since a thoughtfully arranged interior makes a small footprint feel genuinely comfortable rather than cramped. This matters for consistency: the documented wellbeing benefits of sauna bathing, improved circulation, reduced muscle tension, a cardiovascular effect comparable to light exercise, depend heavily on regular use, and a sauna that feels pleasant and unhurried to use is one that gets used more often than a purely functional, awkwardly laid out space.

The insulated factory construction ensures reliable heat retention regardless of the compact size, meaning warm-up times and temperature consistency match larger modular alternatives. Combined with included LED lighting, the interior is built to feel considered rather than basic, which contributes to the kind of relaxed atmosphere that supports the calming, stress-reducing effects many regular sauna users report.

For individuals or couples building a personal sauna habit specifically, a compact, well-designed space removes much of the friction that might otherwise discourage daily or near-daily use. Rather than treating sauna bathing as an occasional event requiring a fully prepared session, a thoughtfully laid out personal sauna makes it easier to use regularly, which research on habitual sauna bathers consistently identifies as the key factor driving long-term cardiovascular and wellbeing benefits.
Delivered flat-packed for self-assembly, with free UK mainland delivery on qualifying orders. The larger Cube format requires a little more assembly time than the smaller Icon models, so we recommend allowing a weekend and having a second person to help. A solid, level base and suitable delivery access are required.

For a complete setup, select Professional Installation and choose your preferred date, allowing for the stated production lead time. We’ll then arrange the installation around your requirements, including any additional preparation or works needed to accommodate your sauna where possible.

Electric sauna heaters require a suitable dedicated electrical supply and are not simply plug-and-play. The power requirements depend on the heater's output and the electrical supply available at the property.

Smaller heaters may be suitable for a 230V single-phase supply, while larger or more powerful heaters can require a 400V three-phase supply. Single-phase power uses one electrical phase, whereas three-phase power distributes the load across three phases and is better suited to higher-powered equipment.

The correct supply will depend on the specific heater you choose, so the heater's electrical requirements should always be checked before installation.

Sauna heaters will normally need to be hard-wired into a correctly rated dedicated circuit with the appropriate cable, isolation and electrical protection. They should not be connected using a standard household plug or extension lead.

The final electrical connection should be completed by a suitably qualified electrician in accordance with the heater manufacturer's instructions and applicable electrical regulations. This is important for both safety and reliable operation of the heater.

If you're based in the Leicestershire area, we can arrange the electrical installation of your sauna heater for an additional fee. Please speak to our team if you'd like this included with your sauna.

Wood-fired sauna heaters do not require an electrical supply for heating, but they do require the correct installation of the stove, chimney, flue and surrounding heat protection.

The stove must be positioned according to the manufacturer's required safety distances from timber walls, benches and other combustible materials. Depending on the stove and sauna design, suitable heat shields or other non-combustible protection may also be required.

The floor beneath and immediately around the stove may also require suitable non-combustible protection, particularly where there is a risk of embers or hot material falling from the stove.

A suitable chimney and flue system must be installed to safely carry smoke and combustion gases outside the sauna. Where the flue passes through the roof, the correct insulated chimney components, roof flashing and heat-resistant protection should be used.

Correct ventilation is also important. A wood-fired stove requires an adequate supply of combustion air, while the sauna itself needs sufficient airflow to provide fresh air, circulate heat and allow moisture to escape.

When choosing the position of an outdoor wood-fired sauna, you should also consider where the chimney will discharge in relation to your house, neighbouring properties, windows, boundaries and outdoor seating areas.

Any applicable local requirements should be checked before installation, particularly where chimney positioning, smoke control or other restrictions may apply.

The Sauna Lumi needs straightforward, regular care typical of any insulated modular sauna. After every session, prop the door open for twenty to thirty minutes to let the heat room dry out fully, the most effective habit for preventing mould and dark timber staining over time. Wipe benches down once cooled, and sand the interior lightly once or twice a year wherever contact is heaviest.

The glass front wall needs only a standard glass cleaner and a soft cloth, with a quick check for condensation after each session given the glazed area. The included LED lighting needs no particular maintenance beyond the occasional dust of the fittings.

Externally, treat the spruce exterior with a wood treatment every two to three years, adjusting timing for weather exposure. The compact footprint makes this a manageable job to stay on top of each cycle. Keep the base clear of leaves and standing water, checking that ground preparation continues draining properly over time, the same basic principle that applies to any outdoor timber building regardless of size or layout.
This sauna comes with a 5 year warranty for residential use and 2 years for commercial use, covering structural timber, glazing, and hardware. Valid claims are assessed case by case, and we'll supply replacement parts wherever possible rather than the whole sauna.
Production takes 10-12 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered as pre-assembled wall sections rather than fully flat packed. Free UK mainland shipping applies to orders over £500 covering up to one double pallet (2.4m x 1.2m x 2.2m) or two single pallets (1.2m x 1.2m x 2.2m). If your order exceeds this due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode. Please have a solid base, clear access, and suitable unloading space ready before delivery, with help on site if needed. Pallet deliveries are kerbside only, and you're responsible for moving goods onto your property.
Health Benefits
Assembly & Installation
Delivered flat-packed for self-assembly, with free UK mainland delivery on qualifying orders. The larger Cube format requires a little more assembly time than the smaller Icon models, so we recommend allowing a weekend and having a second person to help. A solid, level base and suitable delivery access are required.

For a complete setup, select Professional Installation and choose your preferred date, allowing for the stated production lead time. We’ll then arrange the installation around your requirements, including any additional preparation or works needed to accommodate your sauna where possible.
Electric Heater Setup

Electric sauna heaters require a suitable dedicated electrical supply and are not simply plug-and-play. The power requirements depend on the heater's output and the electrical supply available at the property.

Smaller heaters may be suitable for a 230V single-phase supply, while larger or more powerful heaters can require a 400V three-phase supply. Single-phase power uses one electrical phase, whereas three-phase power distributes the load across three phases and is better suited to higher-powered equipment.

The correct supply will depend on the specific heater you choose, so the heater's electrical requirements should always be checked before installation.

Sauna heaters will normally need to be hard-wired into a correctly rated dedicated circuit with the appropriate cable, isolation and electrical protection. They should not be connected using a standard household plug or extension lead.

The final electrical connection should be completed by a suitably qualified electrician in accordance with the heater manufacturer's instructions and applicable electrical regulations. This is important for both safety and reliable operation of the heater.

If you're based in the Leicestershire area, we can arrange the electrical installation of your sauna heater for an additional fee. Please speak to our team if you'd like this included with your sauna.

Wood-Fired Heater Setup

Wood-fired sauna heaters do not require an electrical supply for heating, but they do require the correct installation of the stove, chimney, flue and surrounding heat protection.

The stove must be positioned according to the manufacturer's required safety distances from timber walls, benches and other combustible materials. Depending on the stove and sauna design, suitable heat shields or other non-combustible protection may also be required.

The floor beneath and immediately around the stove may also require suitable non-combustible protection, particularly where there is a risk of embers or hot material falling from the stove.

A suitable chimney and flue system must be installed to safely carry smoke and combustion gases outside the sauna. Where the flue passes through the roof, the correct insulated chimney components, roof flashing and heat-resistant protection should be used.

Correct ventilation is also important. A wood-fired stove requires an adequate supply of combustion air, while the sauna itself needs sufficient airflow to provide fresh air, circulate heat and allow moisture to escape.

When choosing the position of an outdoor wood-fired sauna, you should also consider where the chimney will discharge in relation to your house, neighbouring properties, windows, boundaries and outdoor seating areas.

Any applicable local requirements should be checked before installation, particularly where chimney positioning, smoke control or other restrictions may apply.

Cleaning & Care
The Sauna Lumi needs straightforward, regular care typical of any insulated modular sauna. After every session, prop the door open for twenty to thirty minutes to let the heat room dry out fully, the most effective habit for preventing mould and dark timber staining over time. Wipe benches down once cooled, and sand the interior lightly once or twice a year wherever contact is heaviest.

The glass front wall needs only a standard glass cleaner and a soft cloth, with a quick check for condensation after each session given the glazed area. The included LED lighting needs no particular maintenance beyond the occasional dust of the fittings.

Externally, treat the spruce exterior with a wood treatment every two to three years, adjusting timing for weather exposure. The compact footprint makes this a manageable job to stay on top of each cycle. Keep the base clear of leaves and standing water, checking that ground preparation continues draining properly over time, the same basic principle that applies to any outdoor timber building regardless of size or layout.
Warranty
This sauna comes with a 5 year warranty for residential use and 2 years for commercial use, covering structural timber, glazing, and hardware. Valid claims are assessed case by case, and we'll supply replacement parts wherever possible rather than the whole sauna.
Delivery
Production takes 10-12 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered as pre-assembled wall sections rather than fully flat packed. Free UK mainland shipping applies to orders over £500 covering up to one double pallet (2.4m x 1.2m x 2.2m) or two single pallets (1.2m x 1.2m x 2.2m). If your order exceeds this due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode. Please have a solid base, clear access, and suitable unloading space ready before delivery, with help on site if needed. Pallet deliveries are kerbside only, and you're responsible for moving goods onto your property.
Modular Garden Sauna Lumi — Painted Black, Pitched Roof 3.6m² — painted — angle view 1

A compact sauna with a thoughtful layout

Sauna Lumi sits in the middle of the modular range at 3.55 square metres, with a 234 by 249 centimetre footprint that gives a slightly more generous layout than the Cube version while remaining a manageable size for most gardens. The same pre assembled modular construction applies, with solid spruce wall sections built and finished before they reach site for a faster overall installation than a comparable log built cabin would require.

The slightly larger footprint compared with Lumi Cube allows for a more relaxed interior arrangement, useful for anyone planning to use the sauna regularly rather than occasionally, where the difference between a tight and a comfortable layout becomes more noticeable the more often the cabin actually gets used. Heat retention benefits from the solid timber construction in the same way as the rest of the modular range, so the faster build process does not come at the expense of how the sauna performs once it is up and running through a typical session.

Lumi works well as a straightforward, well proportioned garden sauna for anyone who wants a quick, solid installation without sacrificing comfort for speed, landing in a sensible middle ground between the most compact and the largest modular options available. It is the size many households settle on once they have thought through how they actually intend to use a sauna, rather than simply choosing the smallest or largest number on a spec sheet. The Spruce structure is supplied with its exterior factory-finished in painted black.
Modular Garden Sauna Lumi — 2–3 Person Painted Spruce Insulated Sauna, Full Front Glass & LEDs, 3.55m²
Modular Garden Sauna Lumi — Painted Black, Pitched Roof 3.6m² — painted — angle view 2
Modular Garden Sauna Lumi — Painted Black, Pitched Roof 3.6m² — painted — front view 1
Modular Garden Sauna Lumi Painted Black — lifestyle
Modular Garden Sauna Lumi — Painted Black, Pitched Roof 3.6m² — painted — lifestyle photo 9
Modular Garden Sauna Lumi — 2–3 Person Painted Spruce Insulated Sauna, Full Front Glass & LEDs, 3.55m²
Modular Garden Sauna Lumi Painted Black — lifestyle
Modular Garden Sauna Lumi — 2–3 Person Painted Spruce Insulated Sauna, Full Front Glass & LEDs, 3.55m²
Modular Garden Sauna Lumi Painted Black — lifestyle
Modular Garden Sauna Lumi Painted Black — lifestyle
Modular Garden Sauna Lumi — Painted Black, Pitched Roof 3.6m² — painted — lifestyle photo 10

The everyday sauna

Lumi's 3.6m² and relaxed layout are sized for daily use — the sauna that becomes part of the routine, not the occasion.

Painted black, pitched and polished

The black factory finish sharpens the familiar pitched roofline into something unmistakably contemporary.

Modular spruce, solid results

Pre-assembled solid spruce sections install quickly and hold heat efficiently through every session.

For ritual over occasion

Chosen by people who wanted a sauna they'd use on a random Tuesday — and do.

Build your outdoor sauna

1

Choose the sauna size, layout and feel that suits your garden and routine.

2

Place your order and we confirm the key details before preparing your sauna.

3

Get ready for delivery, installation and proper heat sessions at home.

BUILD MY SAUNA SPACE

Frequently Asked Questions

The interior is laid out specifically to make the most of a compact footprint, balancing bench positioning and space efficiently rather than simply fitting standard seating into a small box.

Both are similarly sized, factory-assembled, insulated modular saunas; the standard Lumi uses a square footprint with a different door and window arrangement, while the Cube offers a more distinct, glass-fronted silhouette.

Yes, LED lights come fitted as standard as part of the factory build, with no need to source or fit lighting separately.

Factory-assembled, insulated wall sections mean installation is considerably faster than a self-build log sauna; exact timing depends on site preparation and access but the structure itself goes together quickly.

Yes, its compact, well laid out interior and reliable insulated construction make it a strong fit for individuals or couples wanting to use their sauna regularly rather than occasionally.

5-Year Guarantee

5-Year Guarantee

Built for years of wellness and relaxation

Free UK Mainland Delivery

Free UK Mainland Delivery

Free delivery throughout England, Wales, and Scotland.

Expert Help, When You Need It

Expert Help, When You Need It

Friendly specialist support before and after your purchase. Schedule a virtual appointment.

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