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.
Start in the 3D builder and shape your sauna in real time — size, benches, glass, wood, heater and layout, with the price updating as you design. Prefer a hand? Contact us with your requirements and our team will help refine the design. Either way, we confirm the specification and send a clear quote.
Approve the quote and a 50% deposit starts your custom build. For delivery or collection only, the remaining 50% is due before the sauna leaves our workshop. With on-site assembly, 40% is due before shipping and the final 10% at final inspection, once the sauna is delivered, assembled and complete.
Across Thailand, choose delivery only or on-site assembly. With assembly, our team assembles the sauna and wires its own components, including the heater to the control box. Your licensed electrician must provide the mains supply and make the final connection to the specification we provide.
Teak · 2000x2000 mm · Jomtien, Chonburi
Teak · 1800x1700 mm · Koh Samui
Pine · 1200x1700 mm · Koh Phangan
Teak · 1850x2350 mm · Hua Hin
Mixed wood · Varies mm · All over
Teak · 5000x2000 mm · Bangkok
Thinking about a sauna but unsure whether to buy custom-built or an imported flat-pack? Here's an honest side-by-side to help you decide.
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Unlike a built-in kitchen or that sofa you'll never move again, a Sisu Sauna is built in sections — so when you move house, it comes with you.
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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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We're developing a new ice shower for home and commercial use — built right here in Thailand. Here's why it might suit you better than an ice bath.
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Pairing a sauna with an ice bath amplifies the benefits of both — here's the science, the method, and how to get started safely.
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In a 90–100 °C sauna, the wrong glass or a tight frame is a safety hazard waiting to fail. Here's the engineering behind every Sisu Sauna glass installation.
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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
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