Sauna 400 Deluxe Thermo

Max capacity, bright interior, Thermowood

Prices from

£11,895 inc VAT
STEP 1 OF 1

Choose your sauna timber

Choose your timber colour

Thermowood

Choose your roof shingles

Terracotta

Umber

Forest

Graphite

Onyx

Choose your sauna heater

Choose your back window

Choose your add-ons

Product information

Maximum length, maximum light. Sauna 400 Deluxe matches the largest standard barrel length at 400cm but adds a tempered glass front, bringing genuine brightness into the curved interior. Solid Thermowood construction keeps thermal performance intact behind the glazing. The most premium standard specification, suited to households who want both serious capacity and a more open, connected feel inside.

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: Barrel
  • Accommodates: 7-8 People
  • Length: 400 cm
  • Diameter: 230 cm
  • Wall Thickness: 42 mm
  • Material: Thermowood
  • Main Door: 70 x 180 cm
  • Half-Moon Window: 2pc 38 x 92 cm
  • Glazing: Tempered Glass
  • Weight: 1450 kg
  • Package Size: 400 x 120 x 120 cm
  • Assembly: Self-assembly
  • Insulated: No
  • Design Note: Half-moon tempered glass end wall

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.
Combining maximum group capacity with the most elevated specification in the range gives households who want both genuine practical scale and premium finish a single, considered choice rather than a compromise between the two. The core physiological benefits of sauna bathing, improved circulation, reduced muscle tension, a cardiovascular effect comparable to light exercise, remain consistent regardless of finish, but the distinctive half-moon glazing brings substantial natural light into a sauna of this scale, which many users find enhances the overall relaxation experience considerably.

For households treating their sauna purchase as a serious long-term investment, choosing the most premium specification available within the standard barrel range often reflects a genuine commitment to making the sauna a centrepiece feature rather than a purely functional addition. That sense of pride in a well-specified, considered purchase tends to support more consistent, enthusiastic use over time.

The brighter, more open feel created by the substantial glazing also suits group sessions particularly well, since a connected, well-lit space tends to feel more sociable and inviting for a larger group than a fully enclosed cabin might. For households specifically planning regular, serious group entertaining around their sauna, this combination of maximum capacity and premium light makes for a genuinely standout garden feature.
Delivered flat packed for self-assembly, with free UK mainland delivery on qualifying orders. The maximum length and distinctive half-moon glazed end make this one of the more involved builds in the range, best planned over a full week with experienced help. Needs a solid, level base and good access. Professional installation is strongly recommended; see our Self Assembly Guide.
The Sauna 400 Deluxe needs the same fundamental barrel sauna care as other models in the range, with particular attention to the distinctive half-moon glazed end wall given its larger size and premium specification. After every session, leave the door open for twenty to thirty minutes to let the heat room dry out fully, preventing mould and 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 half-moon glazing needs careful, regular cleaning with a standard glass cleaner and soft cloth, given its distinctive curved shape and prominent visual role; check for condensation build-up after sessions and wipe down before closing up.

Externally, treat the curved Thermowood exterior with a wood treatment every two to three years, budgeting considerable time for this large, premium structure. Keep the full extended base clear of debris and standing water, checking drainage around the glazed end particularly carefully given its distinctive shape and the additional weight this premium model carries.
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 maximum length and distinctive half-moon glazed end make this one of the more involved builds in the range, best planned over a full week with experienced help. Needs a solid, level base and good access. Professional installation is strongly recommended; see our Self Assembly Guide.
Cleaning & Care
The Sauna 400 Deluxe needs the same fundamental barrel sauna care as other models in the range, with particular attention to the distinctive half-moon glazed end wall given its larger size and premium specification. After every session, leave the door open for twenty to thirty minutes to let the heat room dry out fully, preventing mould and 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 half-moon glazing needs careful, regular cleaning with a standard glass cleaner and soft cloth, given its distinctive curved shape and prominent visual role; check for condensation build-up after sessions and wipe down before closing up.

Externally, treat the curved Thermowood exterior with a wood treatment every two to three years, budgeting considerable time for this large, premium structure. Keep the full extended base clear of debris and standing water, checking drainage around the glazed end particularly carefully given its distinctive shape and the additional weight this premium model carries.
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.

Maximum capacity, maximum specification

Sauna 400 Deluxe matches the 400 centimetre length of the standard largest model but adds tempered glass to the front of the structure, bringing natural light into the barrel format in a way the standard fully enclosed version does not offer. Solid Thermowood construction continues throughout the rest of the build, with the glazing positioned to maximise the view out while the curved barrel shape behind it keeps thermal performance properly intact.

The combination of maximum length and a glazed front makes this the most premium specification within the standard barrel sauna range, suited to households who want both the largest group capacity and a more open, connected feel from inside the sauna itself. Tempered glass is heat treated to withstand the repeated thermal stress a sauna front faces, heated air against cold air every time someone moves in or out during a session.

Sauna 400 Deluxe suits anyone who has decided that both scale and a brighter, more open interior matter to their overall sauna experience, delivering the largest standard capacity available alongside a finish that feels distinctly more considered than the fully enclosed barrel saunas elsewhere in the range. It represents the top of the standard barrel range in every sense that matters, length, finish, and overall presence in the garden.
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

Maximum length and maximum specification, together

Maximum length and maximum specification, combined. The Sauna 400 Deluxe pairs serious group capacity with a distinctive half-moon glazed end, solid Thermowood construction throughout.

The most elevated barrel sauna available

The most elevated barrel sauna in the standard range. Genuine capacity for seven to eight people meets a brighter, more open feel thanks to substantial premium glazing.

For households wanting both scale and statement

For households wanting both scale and statement. This deluxe barrel sauna brings maximum length and a striking half-moon glazed end together in one considered purchase.

Serious capacity, seriously specified throughout

Serious capacity, seriously specified. The Sauna 400 Deluxe combines maximum group room with premium glazing, built for households investing properly in their garden wellness feature.

What our customers say

Don't just take our word for it

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

James

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"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."

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Charlotte

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"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."

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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.

CREATE MY GARDEN SAUNA

Frequently Asked Questions

It combines the maximum 400 centimetre length with a distinctive half-moon tempered glass end wall, giving both serious capacity and a genuinely elevated, brighter specification.

Comfortably seven to eight people, matching the standard 400's capacity while adding the premium glazed end wall feature.

A distinctive curved glazing design at the end of the sauna, bringing substantial natural light into the heat room while creating a striking visual feature.

At 1450 kilograms versus 1050 for the standard version, the additional weight reflects the premium glazing and elevated specification of this deluxe model.

The glazing is specifically engineered for sauna application and performs reliably alongside the solid Thermowood construction, so heat performance remains strong despite the larger glazed area.

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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