Dry sauna
Dry sauna in Batam: custom cabins for homes and villas
Timber-lined room running 70-90 degrees off a 3.6-9 kW heater, sized to fit the space you have instead of a fixed factory template.
This is a timber room held at 70-90 degrees and kept dry, 10-20 per cent humidity, built for families, villa owners and hotel health clubs alike. Budget an indicative IDR 60-120 million for the common four-seat 2x2 m room; fitting starts only once the timber and heater have cleared the port. Full price tables are public.
What a cabin here actually has to hold up against
Two things, mainly: humidity that sits between 73 and 96 per cent, and air that carries salt with it. Build a cabin like a plain plywood box and it looks fine for one season before it starts to smell. Ours is layered instead - lining panel, 50 mm rockwool, a taped foil vapour barrier over every seam, a 20 mm air gap, then the cladding on top. The foil keeps the room's own moisture out of the insulation, and the gap gives the wall somewhere to dry between sessions.
Interior cladding is western red cedar, Scandinavian spruce or thermowood, and benches are aspen or abachi specifically because neither gets painfully hot under bare skin. Ulin and bengkirai are genuinely excellent hardwoods for this island, but they belong on a deck or a step outside, never on a bench you're about to sit on.
What Nongsa, Sukajadi and Tiban households actually order
Three patterns show up again and again. Nongsa coast villa owners want four to six seats with a glazed front facing the pool, usually in thermowood and usually paired with a plunge nearby. Cluster households across Sukajadi, Batam Centre and Orchard Park go for the 2x2 m four-person room in red cedar with a 6 kW heater, sized to fit a spare bedroom without any structural work. Older houses in Tiban and Sekupang have the floor space but not the amperage, so they end up with the two-person 1.5x1.2 m cabin at 3.6 kW instead.
In money terms: the pinewood two-seater with its 3.6 kW heater lands around IDR 55-70 million, the red cedar family room on 6 kW around IDR 75-95 million, and the thermowood six-seater on 8 kW around IDR 110-150 million, all indicative until the survey.
What a 6 kW heater actually asks of the PLN Batam meter
Most cluster houses on the island connect at 2,200 or 5,500 VA, enough for air conditioning and a rice cooker and not a great deal more. A 6 kW heater calls for 7,700 VA, an 8-9 kW unit wants 11,000, and anything club-sized moves to three-phase. PLN Batam runs its own tariff and its own upgrade process separate from the national grid, and that fee is the owner's to pay; our part is telling you which tier a given size implies before you sign anything.
The wiring itself is our responsibility: heat-resistant SiHF cable running from the consumer unit to the heater, its own breaker, an ELCB, and the whole run kept clear of the insulation. Where an upgrade genuinely isn't on the table - a rented Nagoya apartment being the usual case - the honest recommendation is an infrared cabin at 1.7-2.4 kW rather than trying to squeeze an undersized hot room past the meter.
The real timeline, not the optimistic one
Two to four weeks on site for a home cabin, on top of one to two weeks while the heater, glass and timber are being supplied. That supply window is the part clients underestimate: sea cargo out of Jakarta takes four to fourteen days and free trade zone paperwork has to clear before any of it moves again. We fold that into the schedule at quotation stage rather than let it surface as a surprise halfway through the job.
The sequence doesn't vary job to job. Free survey, a drawing with an itemised quote, half down, fabrication in Batam Kota, the second payment, installation, then a test heat-up with you actually standing in the room while we take it to 80 degrees and check the ELCB. Two years on the structure once you sign for it.
Indicative pricing
| Configuration | Indicative price (IDR) |
|---|---|
| Made-to-order 2x2 m room for four | IDR 60-120 million |
| Pinewood cabin for two, 3.6 kW | IDR 55-70 million |
| Red cedar room for four, 6 kW heater | IDR 75-95 million |
| Thermowood room for six, 8 kW heater | IDR 110-150 million |
| Budget build, mixed timber species | from IDR 40 million |
| Swap-in of a 6-9 kW Harvia heater | IDR 15-35 million |
| Accessory bundle: bucket, ladle, thermometer, light | IDR 1.5-8 million |
Treat these as ballpark IDR numbers - the confirmed price comes out of the free on-site survey.
Frequently asked questions
A boutique hotel in Nagoya needs this finished before a fixed opening date - how much lead time should we give you?
Six weeks minimum from a signed quote for a single commercial cabin, and that already assumes material is ordered the day the deposit clears. Tell us the opening date at survey stage rather than at deposit stage; a date discovered late is the one thing that turns a normal build into a rushed one.
Is Scandinavian spruce actually comparable to what's fitted in Singapore spas, or is that just a sales line?
It's the same timber grade used across the region, spruce being the entry point and thermowood or cedar the step up that most Singapore-standard fit-outs specify. What separates a good result from a disappointing one is rarely the species - it's whether the vapour barrier and ventilation gap behind it were done properly, invisible once the cladding goes on.
The house sits empty for weeks at a time while we're back in Singapore - does the heater or timber suffer?
The timber copes better than people expect, provided the vents stay open so the wall keeps drying on its own schedule. The heater is the part worth switching off at the breaker between visits - stones and elements last longer idle than left live with nobody around to notice a fault.
Do you only fit Harvia, or can we ask for a different heater brand we've used before?
Harvia is the default because spares sit in our own store, but Sawo and Tylo go in just as readily and we've fitted other European brands on request when a client already owns one. The only condition is that spares and voltage compatibility get checked at quotation stage, not discovered during installation.
Service areas
Other products
Villa luxury sauna
Thermowood-and-glass cabin built for a pool deck, framed so the outlook stays open while the sea air stays outside.
IDR 80-150 million
Prefab sauna cabin
Ready-built two-person unit from the workshop - carried in, wired and heating within the day, and just as easy to relocate later.
IDR 15-35 million
Infrared sauna
Carbon-panel room for one or two at 45-60 degrees, drawing only 2,200-5,500 VA and finished inside a single day.
IDR 30-70 millionGet a range
Tell us what you're picturing and we'll size it up
Name the district or estate and roughly what you'd like built. Expect a same-day callback in English, plus a free survey booked off the back of it.
Snap three photos and we will text back a ballpark figure
Doesn't matter if it is a Nongsa villa, a Nagoya health club or a bare room in a Sukajadi cluster house - three photos plus your VA rating gets you a first number.