Delivered flat-packed for self-assembly, with free UK mainland delivery on qualifying orders. Allow a full weekend for assembly and have at least one other capable adult available to help. Larger, heavier and multiroom models may require additional time and lifting assistance. 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. Worth running our sauna build checker before delivery day, and our heater size calculator to confirm the heater this one needs.

Inside, this sauna holds about 7.7 m³ of air, about the size of a small box room. To get that properly hot you want roughly 6kW of heat, and the Saunum Experience 6kW (Leil 1.1) is the one we'd point you at. Anything between 6kW and 9kW will do the job, so it comes down to how it looks, how you control it and what you want to spend. Our heater size calculator shows how we got to that and lists every heater that fits this model.

A heater this size runs off a normal household supply, but it can't go in a plug socket. It needs its own dedicated circuit, much like an electric shower or oven. Whichever heater you pick, check what it needs before you buy.

The heater gets wired straight into your electrics by a qualified electrician. Never a plug, never an extension lead. If you're near us in Leicestershire we can arrange the electrician for you for a fee, so it's all done in one go. There's more detail in our full guide to electric heater setup.

Two things worth doing before you buy: our running cost calculator tells you what a session will cost to heat, and our solar calculator works out the panels and battery you'd need if you'd rather run it from the sun.

Inside, this sauna holds about 7.7 m³ of air, about the size of a small box room. The Cozy 12 OG Wood Burning Heater is the stove we'd suggest for it, and anything from the 12kW to the 16kW will work. Our heater size calculator shows how we worked that out and what else fits.

A wood stove needs no electrics at all, but it does get extremely hot. It has to sit a set distance from the timber walls and benches, usually with a heat shield behind it, and something fireproof underneath in case an ember drops out. The stove instructions give you the exact distances. The walls are 70mm solid timber with no insulation layer, so it takes a bit longer to warm up and uses a bit more wood than an insulated one.

The chimney runs up and out through the roof. This one has a sloped roof, so the collar needs to suit the angle and the chimney has to sit high enough to draw properly. The fire also needs air to burn, and the room needs a vent low down and another high up so fresh air comes in and damp gets out. Have a think about where the smoke will blow, in relation to your house, your neighbours and where you sit outside.

Before you build, run our sauna build checker. It checks your vents, bench heights, clearances and drainage in a couple of minutes and flags anything that'll cause you grief later. Our full guide to wood-fired heater setup covers the rest. It's also worth a quick check with your council, as some areas have rules about chimneys and smoke.

A two room log sauna needs its two rooms looked after differently, which is the only real departure from standard spruce cabin care. After each session, prop the bronze glass door open for twenty to thirty minutes so moisture can leave the heat room properly; this single habit prevents more mould and dark staining than anything else you can do. Wipe the benches down once they have cooled, and give the interior a light sand once or twice a year wherever hands, backs and feet make the most contact.

The changing room is unheated, so it dries far more slowly than the heat room and is worth a periodic check, particularly through winter when wet robes and towels tend to be left hanging in it. Keep it ventilated rather than sealed, and don't let damp fabric live in there between sessions. The bronze glass door needs nothing more than a standard glass cleaner and a soft cloth; avoid anything abrasive that would dull the tint.

Externally, the 70 millimetre spruce needs a wood treatment reapplied every two to three years, sooner on south and west facing elevations. The pitched roof helps here by throwing water clear of the walls, but check that it is actually landing somewhere sensible rather than pooling against the lowest log courses, and keep the base clear of leaves. The overhang above the entrance is worth a look each autumn too, since it is the part of the roof that catches the most debris.

Production takes 10-12 weeks, plus 1-2 weeks dispatch time for haulage. Due to its size and weight, this sauna ships on an oversized pallet (typically around a tonne or more) and arrives kerbside on a flatbed truck. Free UK mainland shipping applies, but additional charges may apply by postcode for length, weight, or restricted access, quoted separately.

Because of its size and weight, this item cannot be unloaded by tail lift and unloading is not included in the price — it needs arranging in advance. Depending on your access, you have three options:

• Forklift – if there's space to move the pallet from the truck to its final position, this is the most cost-effective choice.
• HIAB – for lifting over a fence or wall near the road, a HIAB (truck-mounted crane) is a practical and affordable option.
• Crane – if the final position is far from the road and forklift access isn't possible, a crane will be needed.

Handballing is possible but requires a full team of able helpers and suitable lifting equipment at every stage, and is done at your own risk. We can help source a forklift, HIAB, or crane in your area for an additional fee — if you're unsure which suits your site, contact us before ordering and we'll advise. Please have a solid, level base and clear access ready before delivery. Final positioning is not included unless you use our installation team; once unloaded, moving and positioning the goods is your responsibility.