Steam & Oak Kesä 480 XL Sauna Garden Room — Lounge, Sauna and Terrace
Steam & Oak · our rating 42
from £17,950 at 1 retailer
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Options (8)
| Option | Best price | Availability | |
|---|---|---|---|
| No heater — building only | £17,950 | In stock | View |
| Harvia electric 6 kW | £18,430 | In stock | View |
| Harvia electric 8 kW | £18,450 | In stock | View |
| Wood-fired — Harvia M series | £18,720 | In stock | View |
| Gas — Botnia 81, no safety pack | £19,745 | In stock | View |
| Gas — Aurora 81, no safety pack | £19,945 | In stock | View |
| Gas — Botnia 81 with safety pack | £20,045 | In stock | View |
| Gas — Aurora 81 with safety pack | £20,245 | In stock | View |
Where to buy
| Retailer | Price | RRP | 30-day change | |
|---|---|---|---|---|
| Steam & Oak | £17,950 | — | — | View at Steam & Oak |
Price history
Specs
| Dimensions | W 681cm × L 461cm |
|---|---|
| Features | lounge, sauna-room, covered-terrace, sliding-patio-doors |
The Kesä 480 XL is the largest building in the range: 6.81 m across in total, with sliding patio doors onto a lounge, a separate sauna room, and a covered terrace big enough to furnish properly. Built in 70 mm solid log, 4.61 m deep. A garden room first, with a sauna built in The extra width over the Kesä 460 goes into the lounge — 2.6 m rather than 2.0 m — and into a 2 m covered terrace. That is the difference between a room you change in and a room you would actually sit in with people. Sliding patio doors open the lounge to the terrace, so in summer the two become one space. The sauna room keeps its own door off the lounge. Why 70 mm logs Solid 70 mm log throughout. On the sauna side that is thermal mass — walls that store heat and hold temperature steadily. On the lounge side it is a building with enough substance to use in spring and autumn, not just high summer. Available in black or natural spruce. Specification Building Lounge, sauna room and covered terrace Total width 6810 mm (4810 building + 2000 terrace) Depth 4610 mm Lounge approx. 2600 mm Sauna room approx. 2000 mm Heated sauna volume approx. 8.2 m³ Walls 70 mm solid log Doors Sliding patio doors to the lounge Finish Black or natural — tell us your choice Weight approx. 2800 kg What's in the box Everything structural. No hidden extras to buy before you can build it: Pre-cut, numbered 70 mm log walls Sauna benches Sliding patio doors, glazed doors and windows Internal partition wall Covered terrace structure and posts Roof covering Floor and foundation beams Complete fixing kit Ventilation grids Step-by-step assembly instructions Run the sauna on gas — no electrician, no cable across the garden A FinSteam gas heater runs on a standard propane bottle — the same sort you would use for a patio heater or a barbecue. No armoured cable, no trench across the lawn, no electrician's quote you had not budgeted for. The sauna room is around 8.2 m³, so the 8.1 kW heater is well matched to it. One honest caveat on a building this size: gas heats the sauna room, not the rest of the building. If you want the lounge heated in winter too, you will need a power supply for that regardless — so the gas option makes most sense if the lounge is a three-season space, or if you are heating it another way. Pick a gas option above and we fit the flue and commission the heater on installation day. Which gas option? Botnia 81 Our standard 8.1 kW gas heater. Everything you need to run the sauna. Aurora 81 The premium version of the same 8.1 kW heater — better finish and detailing. And then: safety pack, or without? With safety packrecommended on a building used by guests Adds the Njord heat shield and the Halo guard rail. The heat shield cuts the required clearance to combustible timber from 200 mm to 50 mm. The guard rail stops anyone brushing against the hot stones. Without safety pack Heater and stone cage only. Suits an install where clearance is generous and the sauna is for your own use. Every gas option includes the heater, the Orbis stone cage, and our fitting and commissioning. See the full gas heater range → Or choose electric or wood-fired above Electric — a Harvia heater with a full stone load, integrated controls and a 2-year warranty. On a building like this you are likely running a supply out anyway for lighting and sockets, so the marginal cost of a sauna circuit is lower than on a standalone cabin. Budget £400–£1,200 for the garden supply itself. Wood-fired — a Harvia M-series stove. No electrics needed for the sauna at all. We fit the flue on installation day. If you are in a smoke control area, check the model against DEFRA's exempt appliance register first — see our smoke control area guide. 2-year warranty Two years on the structure and on the heater, whichever heat source you choose. Covers manufacturing defects and workmanship. Planning permission — read this before you order This matters more on a garden room than on a small sauna, and we would rather you knew now. Mos
