Custom outdoor and indoor saunas — Finnish in soul, with real löyly — plus ice baths, chillers and accessories. Designed, built and delivered across Thailand by the same Finnish-rooted team since 2020.
Take a 2-minute quiz — discover your sauna spirit, or get a real model recommendation and price.
Fah, Narak and Barrel — built to your dimensions, wood and heater.
Cedar, teak and stainless plunge tubs — Finland's winter ice-hole dip, rebuilt for Thailand.
½ HP to 2 HP — sized for Thai ambient. Hose, filter and starter kit included.
Electric and wood-fired sauna heaters, sized to your room — stones and controls included.
Buckets, ladles, stones, controls, lighting, signage and more.
Build your sauna in the browser — pick size, wood and heater, get a price instantly.
Choose the size, wood, glass, benches and heater in the 3D builder. See the price update as you design.
Prefer some help? Our team can refine your design. We confirm the specification and send a clear quote.
For custom saunas with on-site assembly
Approve your quote and pay the deposit to confirm your order and start the build.
Before delivery, have a qualified electrician prepare a suitable, energised supply within 3 metres of the agreed sauna connection point, with the specified voltage, phase and capacity.
Pay the remaining half on the day of delivery, after your sauna is fully assembled and tested.
With on-site assembly, our team builds your sauna and connects from the prepared power point inward, then tests it. Your electrician is responsible for the supply to that point.
If you choose delivery without assembly, or collect from our workshop, the remaining 50% is due before the sauna leaves the workshop.
Pine · 1800x1700 mm · Chiang Mai
Teak · 2400 mm · Mae Sai
Teak · 2200x1600 mm · Koh Samui
Teak · 1850x2350 mm · Hua Hin
Pine · 2200x1700 mm · Bang Saen
Teak · 1800x1700 mm · Koh Samui
A Finnish newspaper noticed that a Finn in Thailand is building saunas. Shocking, we know.
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Finns have known it for centuries — a daily sauna session does far more than make you sweat. Here's what the science (and your body) will tell you.
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Finns have been splashing beer on sauna stones for centuries. It smells incredible — and yes, it's a completely legitimate reason to bring beer into the sauna.
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Design your custom sauna in minutes with our 3D builder — pick size, wood and heater, save your design, and we'll take it from there.
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Good ventilation in your indoor sauna room prevents moisture damage and mould — here's what to do, especially in Thailand's already-humid climate.
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Keep your sauna fresh and long-lasting with plain water, a good scrub, and the right oil — no chemicals, no lacquer needed.
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We are a small Thai–Finnish crew building out of our own workshop in Surin, with a showroom in Bang Saen. We cut, frame, clad and finish every cabin ourselves, then deliver and install it with you on-site. No middlemen, no drop-shipping — just people who love saunas building yours.
Every Sisu wall is a factory-built sandwich panel. A welded 50 mm box-steel skeleton carries the structure, insulation fills every cavity, a foil vapour barrier seals the hot side, and both faces are boarded with plywood and clad in real wood. Rigid, straight and insulated — built for Thai heat and humidity.
Animated cross-section — the actual construction of every Sisu wall panel.
Hot air rises, so the temperature climbs roughly 2–3°C for every 100 mm of height — up to 100°C at the ceiling. That layering creates natural micro-climates: sit on the upper bench for the full heat, the lower bench for a gentler session. Everyone in the same sauna picks their own.
Temperature layering in a Sisu sauna — the gradient every sauna bather knows.
The same 3D model you configure in the designer is the sauna we hand-build. Drag the handle to compare — or just watch it change.
3D Design
Built by Sisu
Panoramic commercial sauna
Your sauna arrives as finished panels and goes together in the same order as our real installation guide — from your level concrete pad to the first heat-up.
Typical on-site assembly sequence of a standard sauna.
A chiller plumbs into any shower head. Switch it on, wait about 20 minutes for the water to run ice-cold, then step under a fresh, flowing stream — no ice needed. It's far faster than an ice bath: no filling a tub, and no waiting 4–5 hours for the water to get cold.
How it works: mains water → chiller → any shower head → ice-cold.
The complete designer covers every Fah, Narak and Barrel build — glass, heater, benches and more, with live pricing and instant quotes.
Open the full 3D builder →The most interesting stories from the sauna & cold-plunge world — a short, free weekly email. No spam, unsubscribe anytime.
Read this before you apply
Sisu Sauna is owner-run and built for the long term. Before you apply, understand what you are joining:
Free to join · no stock needed
Calculated on prices excluding VAT · delivery & on-site assembly excluded
After approval you'll sign the full partner agreement online in your portal · see our reseller map
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