Oval Sauna Raiki Thermo

Standout curved profile versus standard barrels

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£8,395 inc VAT & Delivery Included
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Thermo Spruce

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Oval Sauna Raiki — 5–6 Person Thermowood Garden Sauna, 148cm Round Window, 4.05 × 2.4m
Sauna Accessories Set Black — Bucket, Ladle, Thermometer & Timer

Choose your add-ons

Product information

A curve all its own, not just another barrel variation. Oval Sauna Raiki brings a genuine 405 x 240cm oval profile, solid Spruce construction giving it real thermal performance behind a shape that stands apart visually. The elongated curve creates a different sense of flow than a tighter round barrel. Built for anyone who wants the curved sauna aesthetic with genuine visual distinction.

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: Oval
  • Accommodates: 5-6 People
  • Footprint: 405 x 240 cm
  • Max Height: 220 cm
  • Wall Thickness: Front 28mm / Sides 42mm
  • Material: Thermowood
  • Main Door: 59 x 169 cm
  • Glass Door: 59 x 169 cm
  • Round Window: Ø148 cm
  • Assembly: Self-assembly
  • Insulated: No
  • Design Note: Named after Inmedias Res contact Raiki Pozdnjakov; large round window
  • Power Supply: Single or Three Phase
  • Heater Compatibility: Electric & Wood-Fired
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
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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 sauna's visual distinction has no bearing on the physiological benefits it delivers, but it can genuinely affect how proud and willing owners are to use and show off the space regularly. Heat exposure itself raises heart rate and improves circulation in a way comparable to light cardiovascular exercise, and these benefits accumulate with consistent, regular use regardless of the cabin's exterior silhouette.

The large round window brings substantial natural light into the heat room, which many users find enhances the relaxation benefits of a session considerably, making the space feel brighter and more connected to the surrounding garden rather than fully enclosed. For households who specifically value their sauna as a garden centrepiece, that combination of genuine character and proper heat performance tends to encourage more frequent, enthusiastic use.

Group sauna sessions for five or six people, supported by the oval format's substantial room, bring social and mood benefits beyond the physical effects of heat alone, since the relaxed environment of shared bathing naturally encourages conversation in a way that's harder to access elsewhere. A sauna that's genuinely distinctive and pleasant to use tends to become a more deeply embedded fixture of regular household life than one that feels purely functional.
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 Oval Sauna Raiki needs the same fundamental care as any solid Spruce sauna, with particular attention to its large round window given its prominent role in the design. After every session, leave the door open for twenty to thirty minutes to let the heat room dry out fully, preventing mould and dark staining on timber surfaces. Wipe benches down once cooled, and sand the interior lightly once or twice a year wherever group use creates the most contact wear.

The round window and glass door need regular, careful cleaning with a standard glass cleaner and soft cloth, given their role as the sauna's signature visual feature; check for condensation build-up after sessions and wipe down before closing up.

Externally, treat the curved Spruce exterior with a wood treatment every two to three years depending on weather exposure, with the oval profile shedding rainwater effectively along its curve. Keep the base clear of debris and standing water along the full elongated footprint, checking drainage carefully given this model's distinctive proportions.
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 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
The Oval Sauna Raiki needs the same fundamental care as any solid Spruce sauna, with particular attention to its large round window given its prominent role in the design. After every session, leave the door open for twenty to thirty minutes to let the heat room dry out fully, preventing mould and dark staining on timber surfaces. Wipe benches down once cooled, and sand the interior lightly once or twice a year wherever group use creates the most contact wear.

The round window and glass door need regular, careful cleaning with a standard glass cleaner and soft cloth, given their role as the sauna's signature visual feature; check for condensation build-up after sessions and wipe down before closing up.

Externally, treat the curved Spruce exterior with a wood treatment every two to three years depending on weather exposure, with the oval profile shedding rainwater effectively along its curve. Keep the base clear of debris and standing water along the full elongated footprint, checking drainage carefully given this model's distinctive proportions.
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 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.
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — front view 1

A genuinely distinctive garden feature

Oval Sauna "Raiki" brings a genuine oval profile to outdoor sauna design, with a 405 by 240 centimetre footprint that distinguishes it from both the traditional round barrel format and the more angular cube influenced models elsewhere in the range. Solid spruce construction throughout provides the curved structural shell, built to deliver genuine thermal performance behind a distinctive silhouette that stands out clearly in any garden setting.

The oval shape gives a noticeably different interior feel from a true round barrel, with the elongated curve creating a sense of flow along the length of the structure rather than the more enclosed, circular feeling a tighter barrel diameter produces. This makes Raiki a strong choice for anyone who likes the curved aesthetic of barrel saunas generally but wants something that reads as distinctly its own shape rather than simply another variation on the standard barrel theme.

Oval Sauna "Raiki" suits anyone wanting a properly built sauna with genuine visual distinction, delivering the authentic heat retention and durability expected of solid timber construction behind a profile that few other structures in the wider range can match for sheer visual interest. It tends to be the model people ask about first when they spot it in a neighbour's garden over the fence.
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — lifestyle photo 1
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — angle view 1
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — side view 1
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — side view 2
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — back view 1
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — side view 3
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — lifestyle photo 1
Oval Sauna Raiki — Thermowood Garden Sauna, Distinctive Curved Profile — thermowood — lifestyle photo 2

A silhouette all its own

The Raiki's curved profile is the first thing guests mention — a sauna that reads as sculpture from the kitchen window.

Comfort built into the curve

The oval section opens up headroom and bench space where barrels pinch, making longer, easier sessions the default.

Thermowood that ages beautifully

Premium heat-treated Thermowood keeps its deep colour and stays true through every season, with minimal maintenance.

For gardens with a centrepiece missing

Chosen by people who wanted one beautiful thing at the end of the lawn — that also happens to reach 90 degrees.

Build your oval 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.

CREATE MY HEAT RETREAT

Frequently Asked Questions

An oval profile offers a more elongated, curved silhouette compared with the rounder, more compact look of a traditional barrel sauna, giving genuine visual distinction in the garden.

Comfortably five to six people, with the oval footprint giving substantial room across its 405 by 240 centimetre dimensions.

It brings substantial natural light into the heat room while serving as a distinctive visual feature, adding character beyond purely functional design.

No, the curved oval profile delivers the same even heat circulation benefits as a traditional barrel shape, with solid Spruce construction ensuring reliable thermal performance.

Pricing reflects the specific model and specification rather than shape alone; the oval format's distinctive character comes from genuine design choices rather than premium materials exclusively.

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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