Lumi Painted Black

Pitched-roof sauna with black exterior

Prices from

£15,895 inc VAT
STEP 1 OF 1

Choose your sauna timber

Choose your timber colour

Natural

Walnut

Crimson

Obsidian

Mahogany

Arctic

Silver

Larch

Golden

Midnight

Olive

Cedar

Choose your roof shingles

Terracotta

Umber

Forest

Graphite

Onyx

Choose your sauna heater

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.

Heat Treated Thermowood

Heat Treated Thermowood

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

Designed around your ritual

Full Moon Back Window

Full Moon Back Window

Bring the outdoors in. A full circular 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.
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 as pre-assembled wall sections rather than individual panels, with free UK mainland delivery on qualifying orders. The considered layout doesn't add to installation time, with sections fitting together quickly on site. Needs a solid, level base and clear access. Professional installation available as an upgrade; see our Self Assembly Guide.
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 as pre-assembled wall sections rather than individual panels, with free UK mainland delivery on qualifying orders. The considered layout doesn't add to installation time, with sections fitting together quickly on site. Needs a solid, level base and clear access. Professional installation available as an upgrade; see our Self Assembly Guide.
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.

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.
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Close

A considered layout in a compact footprint

A considered interior layout that makes the most of a compact footprint. Factory-assembled and fully insulated, with LED lighting included as standard, built for couples or individuals wanting genuine regular use.

Faster installation than a self-build sauna

Faster installation than a self-build log sauna, with a thoughtfully arranged interior that doesn't feel like a compromise. Insulated construction throughout, sized for two to three people.

Built for households wanting genuine comfort

Built for households who want a properly made sauna without the weekend-long self-assembly project. The Lumi's considered layout and included LED lighting bring real comfort to a compact format.

Ready for use without a long build

For personal or couple's sauna use, the Lumi balances a small footprint with a genuinely thoughtful interior. Fully insulated, factory-built, and ready for regular use without an extended build process.

What our customers say

Don't just take our word for it

"The Cascina feels solid and well made. The aluminium frame has a clean finish, the roof panels sit neatly, and the whole structure gives the garden a much more complete look."

Aluminium Veranda | The Cascina | Modular Interlinkable | Multiple Roof & Post Styles

Olivia

The Cascina

"The Nobile has a really premium feel. The frame colour looks sharp, the materials feel durable, and the finished veranda has a clean modern appearance."

Aluminium Veranda | The Nobile | Wide Span Up To 7m | Extra-Large Gutter | Polycarbonate or Glass Roof

James

Nobile

"The Cascina suits the house perfectly. What stood out most was the sturdy frame, neat roof finish and how well the design works with the garden."

Aluminium Veranda | The Cascina | Modular Interlinkable | Multiple Roof & Post Styles

Charlotte

The Cascina

"The Fiano Glass Doors feel smooth, sturdy and well finished. They keep the space bright and open while adding extra comfort when the weather turns cooler."

Frameless Glass Sliding Doors | Fiano Glass Sliding Doors | 10mm Glass | Up To 7 Tracks | Veranda Garden Room Conversion

Henry

Fiano Glass Doors

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.

Become a ROMA VIP

Sign up free for early sale access and member-only discounts.

By subscribing, you agree to our Terms & Privacy Policy and consent to marketing emails.