Sauna Magnus XL

Built for heavy, ongoing wellness use

Price

£14,395 inc VAT & Delivery Included

Complete DIY Assembly Kit

Every Order Plants 5 Trees

Professional Installation

Comprehensive Warranty

Free UK Mainland Delivery

Choose your installation

Choose your timber colour

Natural Spruce

Choose your roof shingles

Terracotta

Umber

Forest

Graphite

Onyx

Choose your sauna heater

Choose your roof insulation

Buy together
Multiroom Log Sauna Magnus XL — 4–6 Person 70mm Spruce Garden Sauna, Covered Pergola Terrace, 19m²
Modular Sauna LED Light Strips — Bench Lighting Kit, 1 Room

Choose your add-ons

About

The biggest sauna in the range, built to anchor a garden. Magnus XL covers 19m² in solid Spruce log construction, with a glazed multiroom layout separating heat from changing space across genuine length. Built for heavy use, large families, or small businesses running regular sauna sessions. Needs proper garden space, but rewards it with a structure everything else gets arranged around.

Natural Nordic Spruce

Natural Nordic Spruce

Built for UK Weather

Built for UK Weather

Everything You Need to Install

Everything You Need to Install

Designed for Fast Heat-Up

Designed for Fast Heat-Up

Specification

  • Shape: Rectangular
  • Capacity: 4-6 people
  • Footprint: 690 x 441 cm
  • Max Height: 246 cm
  • Floor Area: 19 m²
  • Wall Thickness: 70 mm
  • Material: Spruce
  • Main Door: 80 x 190 cm
  • Front Room Door 1: 80 x 200 cm
  • Front Room Door 2: 70 x 190 cm
  • Window 1: 177 x 60 cm
  • Window 2: 2pc 129 x 177 cm
  • Window 3: 60 x 177 cm
  • Glazing: Tempered Glass
  • Assembly: Self-assembly
  • Insulated: No
  • Design Note: Covered pergola terrace; privacy slat screening
  • Power Supply: Single or Three Phase
  • Heater Compatibility: Electric & Wood-Fired

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.
At this scale, a sauna stops being a single household amenity and starts functioning as genuine infrastructure for regular wellness use, whether that's a large family using it consistently, or a commercial setting offering it to multiple guests. The physiological benefits of sauna bathing don't change with scale: heat exposure raises heart rate and improves circulation in a way comparable to light cardiovascular exercise, and consistent, repeated use over time is associated with improved cardiovascular markers in long-term studies of habitual sauna users.

What scale does change is capacity for genuine group use without compromise. A sauna built to comfortably hold ten or more people, alongside a covered terrace for socialising beyond the heat room itself, removes the friction that smaller saunas create when groups are larger than the space comfortably allows. For glamping operators and holiday lets specifically, offering guests a wellness experience that doesn't feel cramped or rushed is often what separates a genuinely memorable stay from a token amenity ticked off a list.

The covered terrace adds a further dimension that's easy to underestimate: usability across a full UK year. Sauna bathing followed by sitting outside in the cold air, a key part of the traditional Nordic and Baltic ritual, is far more appealing and far more likely to actually happen when there's a sheltered, comfortable space to do it in regardless of rain or wind. Building that into the design rather than leaving it to chance meaningfully increases how often the sauna gets used, and frequency is ultimately what drives most of the long-term wellbeing benefits associated with regular sauna bathing.
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.

A sauna of this scale rewards a slightly more organised approach to upkeep simply because there's significantly more surface area across the heat room, multiple front spaces, and the covered terrace. After every session, prop the heat room door open for twenty to thirty minutes to let moisture escape fully, the single most effective step in preventing mould and dark staining. Wipe benches down once cooled, and sand the heat room interior lightly once or twice a year wherever hands and bare skin make the most contact.

The covered pergola terrace, while sheltered, should still be checked seasonally for general wear, particularly the roof covering and any seating, since it sees year-round outdoor use rather than the more limited exposure of the heat room itself. Multiple doors and windows across a structure this size mean more seals and hinges to check each season; work through them systematically rather than relying on noticing problems as they arise.

Externally, treat the full exterior, sauna room, front rooms, and terrace structure, on a two to three year cycle, though a build of this scale is worth tackling in sections across a season rather than all at once. Pay particular attention to the base of the structure across its full perimeter, since a footprint this large has considerably more edge length exposed to potential drainage and moisture issues than a standard single room cabin. For commercial installations, consider a more frequent inspection schedule given the higher volume of regular use.
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 6-8 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered flat packed unless otherwise stated. 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). Given this model's size and weight, additional pallet charges may apply and will be quoted separately based on your postcode, and forklift unloading may be required as it exceeds normal tail-lift limits (1000kg). 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
A sauna of this scale rewards a slightly more organised approach to upkeep simply because there's significantly more surface area across the heat room, multiple front spaces, and the covered terrace. After every session, prop the heat room door open for twenty to thirty minutes to let moisture escape fully, the single most effective step in preventing mould and dark staining. Wipe benches down once cooled, and sand the heat room interior lightly once or twice a year wherever hands and bare skin make the most contact.

The covered pergola terrace, while sheltered, should still be checked seasonally for general wear, particularly the roof covering and any seating, since it sees year-round outdoor use rather than the more limited exposure of the heat room itself. Multiple doors and windows across a structure this size mean more seals and hinges to check each season; work through them systematically rather than relying on noticing problems as they arise.

Externally, treat the full exterior, sauna room, front rooms, and terrace structure, on a two to three year cycle, though a build of this scale is worth tackling in sections across a season rather than all at once. Pay particular attention to the base of the structure across its full perimeter, since a footprint this large has considerably more edge length exposed to potential drainage and moisture issues than a standard single room cabin. For commercial installations, consider a more frequent inspection schedule given the higher volume of regular use.
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 6-8 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered flat packed unless otherwise stated. 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). Given this model's size and weight, additional pallet charges may apply and will be quoted separately based on your postcode, and forklift unloading may be required as it exceeds normal tail-lift limits (1000kg). 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.
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — lifestyle photo 5

The largest garden sauna for serious hosting

Magnus XL sits at the top of the log sauna range, with a 19 square metre footprint at 690 by 441 centimetres that puts it closer to a small garden building than a typical sauna cabin. This scale is built for genuinely heavy use, whether that is a large family, a small business offering sauna sessions, or simply a household that has decided to commit fully to outdoor wellness rather than fitting it around the edges of a smaller build that would soon feel limiting.

The rectangular multiroom layout uses the available length to properly separate the heat room from changing and relaxing space, with a tempered glass front bringing light into the sauna itself. Solid spruce log construction throughout gives the structure the thermal performance needed at this scale, since a larger volume of air needs walls doing real insulating work rather than relying on a heater to fight constant heat loss across a space this size, which a thinner build would struggle to manage efficiently.

Magnus XL is a serious investment in outdoor space, and it needs a garden with the room to match, both for the footprint itself and for whatever access is needed to get materials in during self assembly. For anyone planning a dedicated wellness area rather than a single feature, it is the model built to anchor that plan, the kind of structure everything else in the garden gets arranged around rather than the other way round.
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — lifestyle photo 2
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — lifestyle photo 6
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — lifestyle photo 1
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — spruce — angle view 1
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — painted finish option — angle view 1
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — lifestyle photo 3
Multiroom Log Sauna Magnus XL — Largest 70mm Spruce Sauna, 19m² — lifestyle photo 7

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.

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Bespoke wood-fired sauna and wellness space
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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Built on Tradition. Perfected for Today.

Classic Scandinavian design, refined with premium materials, precise craftsmanship and enduring performance.

Designed to Heat Efficiently

Every curve has a purpose, helping your sauna reach temperature faster while delivering an even, enveloping warmth.

Crafted from Exceptional Thermowood

Heat-treated for durability and stability, our premium timber is chosen for its natural beauty and long-lasting performance.

Premium Tempered Safety Glass

Our premium tempered glazing delivers a refined finish, excellent durability and complete confidence in every sauna.

Frequently Asked Questions

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.

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