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.
Please pay the 40% instalment when our team arrives on site to avoid extra charges.
We will need access to the site for 1–3 days, depending on the size of your sauna and the location.
If you’re arranging assembly yourself, pay 50% to confirm your order and the remaining 50% before delivery or pickup.
Mixed wood · Varies mm · All over
Red Cedar · 3600x2500 mm · Bangkok
Teak · 2000x2000 mm · Jomtien, Chonburi
Teak · 1800x1700 mm · Koh Samui
Teak · 2200x1600 mm · Koh Samui
Teak · 5000x2000 mm · Bangkok
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.
Read →
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.
Read →
A thin 38 mm solid wall might look fine on day one — but it won't stay that way. Here's what proper insulated construction actually does for your sauna.
Read →
42 °C at the floor, 80 °C on the upper bench — same room, same heater. Here's why that gap is the design working exactly as intended.
Read →
Good ventilation in your indoor sauna room prevents moisture damage and mould — here's what to do, especially in Thailand's already-humid climate.
Read →
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.
Read →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.
Sisu builds its insulated wall panels in the factory. A welded 50 mm box-steel frame holds the insulation. A foil vapour barrier wraps the insulation on all sides to help keep moisture out. Plywood and real timber cladding finish both faces of the panel.
The silver foil vapour barrier covers the insulation on all sides.
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.
Tampering with any part of your sauna without our approval voids the Sisu Sauna warranty for that sauna, where permitted by law. Your statutory rights still apply.
Warranty support starts with remote diagnosis. Covered defects and Sisu installation faults are remedied under the applicable warranty and law. If inspection confirms a fault caused by the customer, both collection and return shipping, inspection and approved repairs are chargeable at reasonable rates or an estimate agreed in advance.
Read warranty, service and shipping terms →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
Already a reseller? Sign in
