Outdoor and garden saunas: a UK buying guide

Start with the shape and layout

A barrel gives you a compact, self-contained sauna. With a cabin, the heated room can sit alongside somewhere to change. Bespoke designs allow custom dimensions and features such as integrated decking. Each format offers a different way to use the space, not just a different appearance.

Glazing changes the feel of a barrel too. Steam & Oak distinguishes traditional timber designs with a small window from panorama models with a large glazed section. In its range, the panorama version costs more and makes the garden view central to the design.

Palmako lists oval and contemporary cabins, including designs with a dressing room and canopy. If a barrel does not suit your garden, these offer other layouts to consider. Somewhere to change may prove more useful to you than a particular silhouette.

Prices depend on what comes with the sauna

Timber Cladding Specialists gives guide prices of two thousand five hundred to six thousand pounds for a supply-only barrel sauna. Its fully installed cabins range from eight thousand to eighteen thousand pounds. Bespoke builds, also fully installed, run from fifteen thousand to thirty-five thousand pounds or more.

Installation makes a substantial difference to what those figures cover. These are attributed guide ranges, not a single price scale that applies to every outdoor sauna.

Individual retail listings sit outside those ranges. Telos lists a one-to-two-person outdoor hemlock infrared cabin at one thousand six hundred and fifty pounds. Its outdoor cube traditional sauna, with an 8 kW heater, is listed at three thousand eight hundred and seventy-five pounds.

At Steam & Oak, a two-person barrel starts at three thousand eight hundred and ninety pounds. A six-person Hekla Barrel 250 with a heater starts at six thousand four hundred and ninety-nine pounds.

Those listings give different impressions of the entry price because they cover different products and inclusions. A lower headline price is not enough to establish better value. Check how much seating it buys you and whether the heater is included, then look at who will handle installation.

Heating and the routine that comes with it

Hekla presents electric and wood-fired heating as distinct options for traditional garden saunas. Its electric Harvia Cilindro choices are 6.8 kW and 9 kW. Hekla gives a heat-up time of 30–45 minutes and highlights temperature control, with no fuel or ash to manage.

For wood-fired heating, it offers the 14.3 kW Harvia Linear 18. You will need to store fuel and light the fire, then clear away the ash. That routine may appeal if you enjoy a real fire. Electric heating may suit you better if you want less preparation. Use a qualified electrician for electrical work.

Infrared works differently: panels warm the body directly, unlike a stove that heats the air. Hekla discusses it chiefly as an indoor choice, but Telos explicitly lists outdoor infrared cabins. Their coverage differs. Check the intended setting of the model you are considering; an infrared cabin is not automatically suitable for the garden.

Leave room for more than the heated cabin

Capacity is only part of the space you need to consider. Timber Cladding Specialists describes cabins from 2.5 × 2.5 metres, with a two-person sauna and small changing room. Its larger example measures 5 × 4 metres and accommodates four to six people, with changing facilities and seating, plus an external terrace. These are guide examples, not standard dimensions across suppliers.

A changing room gives you a sheltered place between the sauna and the garden. Covered verandas and canopies also appear in the guides, as does decking. Think about which spaces you would use before comparing a simple barrel with a larger multiroom cabin.

Heater output follows room size, according to Hekla. It is part of the specification, not a quality ranking: a higher kW figure alone does not make a sauna a better purchase.

Timber choices and care after buying

Nordic spruce and ThermoWood appear in the guides as barrel sauna materials, alongside cedar. For cabins, Timber Cladding Specialists also describes ThermoWood exterior cladding with an alder interior. One timber name may not describe the whole sauna, so look separately at the inside and outside specifications.

Care advice varies. Timber Cladding Specialists describes ThermoWood exteriors as maintenance-free and says the colour gradually changes to silver-grey. Scottish Saunas recommends annual exterior oil or protective treatment for its outdoor timber saunas, discussing both spruce and thermowood. Neither statement should become a universal care schedule. Ask the supplier for guidance specific to your chosen product.

Cleaning is a separate job. Scottish Saunas recommends wiping down after use and cleaning with warm water or a mild sauna-safe detergent. It also advises airing the space until dry, checking heater stones for cracks or crumbling, and inspecting the structure for leaks or timber damage. Make sure you are comfortable with that ongoing care as well as the purchase price.

Questions people ask

What is the difference between a barrel and a cabin sauna?

A barrel is compact and cylindrical. A cabin can have a separate sauna room with a changing area, plus covered outdoor space. Both formats come in different sizes. Look at the actual layout to see how well it fits your plans.

Is a garden sauna price likely to include a heater?

Some listings explicitly include one. Steam & Oak describes the Hekla Barrel 250 as including a heater. Other headline prices in the supplied extracts do not make the full package clear, so check the stated inclusions before buying.

Can an infrared sauna be used outdoors?

Telos lists infrared models specifically described as outdoor saunas, while Hekla’s guide mainly presents infrared as an indoor option. Suitability depends on the individual model. Check its intended setting before choosing it for your garden.

Is ThermoWood maintenance-free?

Timber Cladding Specialists makes that claim for ThermoWood exteriors. Scottish Saunas, however, recommends annual exterior treatment for its outdoor timber saunas. Ask for the care guidance that applies to the product you are considering.

Does a more powerful heater mean a better sauna?

No. Hekla explains that heater output should match room size. Check the recommended heater configuration for the cabin; the highest kW rating is not a reason to choose it. Use a qualified electrician for electrical work.

Keep reading

• Sauna heaters compared
• Buying a sauna
• What a sauna costs to run
• Barrel vs cabin sauna
• Greenhouse and box saunas
• Best wood for a sauna