1 - 6 Person Black Square Rounded Sauna Room

Frequently Asked Questions

How many people can comfortably use this sauna?

The spacious 2000mm × 2000mm square design comfortably accommodates 1-6 people. Solo sessions feel luxuriously spacious with room to stretch out and relax fully. Couples have a generous space with room to move around. For 3-4 people, everyone enjoys comfortable seating with plenty of personal space. At full capacity with 5-6 people, the sauna provides a social gathering space whilst maintaining comfort. The square footprint offers flexible bench configurations, including U-shaped layouts that suit various group sizes.

What’s the difference between this and a barrel sauna?

This is a square sauna with rounded corners for aesthetic softness and improved airflow – NOT a barrel. Barrel saunas feature curved walls that encircle their entire circumference, creating cylindrical interiors with no flat surfaces. This model features four straight walls joined by rounded transitions at the corners, maintaining a square architecture while eliminating harsh 90-degree angles. You walk into a rectangular room with subtle, curved corners, rather than a tube-shaped space. The construction methods, bench configurations, and spatial feel differ significantly from those of authentic barrel designs.

Can this be installed indoors or outdoors?

Both locations work well with appropriate preparation. Indoor installations are suitable for spaces with an adequate ceiling height (minimum 2.3 m), a proper floor load capacity, ventilation for steam release, and electrical access for the heater. Common indoor locations include basements, garages, spare rooms, or purpose-built wellness areas.

Outdoor installations require a level foundation, weather protection if in exposed locations, and longer electrical runs to the heater. The untreated timber can be finished with exterior-grade wood treatment to protect against sun and rain damage. Consider covered locations or roof overhangs to extend the longevity of wood outdoors.

How long does assembly take?

Experienced DIY builders typically complete assembly in 2-3 days, working at a relaxed pace. First-time sauna installers should plan 3-5 days. The pre-cut panel system eliminates complex carpentry, but careful attention to alignment, levelling, and panel sequencing ensures proper results.

Professional installation services can complete the project in one to two days. Some builders prefer professional help for the initial wall construction, then complete interior fitting themselves. The modular design allows component delivery through standard doorways for indoor installations.

What timber should I choose?

Pine: A budget-friendly option with a light blonde colour and a pleasant, mild aroma when heated. Heats up quickly and insulates well. Shows natural knots and grain variation that add character. Requires more frequent maintenance than harder woods, but remains cost-effective for most users.

Hemlock: Mid-priced choice with pale cream colour and minimal knots for a cleaner appearance. Slightly harder and more durable than pine. Neutral aroma when heated. Popular compromise between cost and longevity.

Red Cedar: Premium option with rich reddish-brown colour and distinctive aromatic scent. Naturally rot-resistant and insect-repellent. Exceptionally durable for outdoor installations. Maintains appearance longer with less maintenance. Worth the investment for longevity and aesthetics.

All timbers are kiln-dried for stability in Thailand’s humid climate.

Do I need a qualified electrician?

Yes, electric heater installation must be performed by qualified electricians to ensure safety and code compliance. The heater requires dedicated circuit wiring (typically 220-240V, 30-40A) with appropriately sized cable for the power rating. Incorrect wiring creates serious fire and electrocution risks.

Budget approximately ฿15,000-30,000 for professional electrical installation, depending on complexity and distance from your electrical panel. This cost is in addition to the base sauna price. Wood-burning heaters eliminate electrical requirements but require proper chimney installation in accordance with fire safety regulations.

What size heater do I need?

For this 2000mm × 2000mm sauna, a 6-8kW electric heater provides adequate heating capacity. Calculate approximately 1kW per cubic metre of internal space, then add 10-20% for Thai ambient temperatures and desired heat-up speed. Undersized heaters struggle to reach proper temperatures; oversized units waste electricity and may overheat the space.

Wood-burning options typically use medium-sized Finnish sauna stoves designed for 8-12m³ spaces. Consult the heater manufacturers’ specifications to match your sauna dimensions. Proper heater sizing ensures comfortable sessions without excessive heat-up times or energy consumption.

How much does the operation cost?

Electric heaters (6-8kW) running at full power consume approximately 6-8 baht per hour at Thailand’s residential electricity rates. A typical session, including the heat-up, might use 2-3 hours of operation time, costing ฿12-24 per session. Insulated construction and efficient heaters keep running costs reasonable for regular use.

Wood-burning saunas have minimal operating costs beyond firewood purchase. A single session uses approximately 3-5kg of hardwood depending on duration and desired temperature. Monthly operating costs depend on usage frequency, but many users find 3-4 weekly sessions costs ฿200-400 monthly for electricity or ฿150-300 for wood.

Can I customise the bench layout?

Yes, bench configurations can be adapted to your preferences. Standard options include single-wall benches (maximising floor space for movement), L-shaped corner benches (ideal for couples or small groups), or U-shaped layouts (maximising seating for larger groups). Upper and lower bench levels provide temperature options.

Discuss your preferred configuration before ordering to ensure the proper supply of components. Simple modifications, such as changing a single-wall to an L-shaped design, can be adjusted during assembly, but significant changes after construction require more effort. Consider how many people typically use the sauna and whether you prefer seating for conversation or individual relaxation areas.

Is this suitable for the Thai climate?

Absolutely. The kiln-dried timber maintains its dimensional stability in varying humidity levels. Proper ventilation and post-session drying prevent moisture problems. Many Thai resorts, hotels, and private homes successfully operate Finnish saunas throughout the year.

The insulated construction retains heat efficiently even in warm ambient temperatures. Electric heaters work reliably in Thai conditions. Regular maintenance (wiping benches, allowing drying time, and occasional deep cleaning) keeps the sauna in excellent condition despite tropical humidity—outdoor installations benefit from being located in covered areas or receiving external wood treatment for extended longevity.

What foundation do I need?

A level, solid foundation prevents structural problems and ensures door alignment. Acceptable options include poured concrete pads (minimum thickness of 100mm), reinforced concrete pavers, or heavy-duty decking with an appropriate load-bearing capacity. The foundation must be perfectly level (with a maximum variance of 5mm across the footprint) and extend slightly beyond the sauna dimensions to accommodate water runoff.

For outdoor installations, slope the foundation slightly away from the structure for drainage. For indoor installations, verify the floor load capacity and consider installing a moisture barrier protection beneath the foundation. Foundation preparation is a separate cost from the sauna package.

How do I maintain the sauna?

Daily: Leave the door open for 30-60 minutes after sessions to allow for moisture evaporation. Wipe benches with a damp cloth to remove perspiration.

Weekly: Check the ventilation vents for blockages. Sweep or vacuum the floor.

Monthly: Deep clean benches and walls with mild wood-appropriate cleaner. Inspect heater stones and replace broken pieces.

Annually: Examine structural components, door hinges, and electrical connections. Consider exterior wood treatment for outdoor saunas. Check roof seals and weatherproofing.

Avoid harsh chemicals, excessive water washing, or sealing internal wood surfaces. Proper ventilation and drying time prevent most problems.

Can this be relocated if I move?

Yes, the modular construction is designed to disassemble for relocation. The process reverses the assembly sequence – remove benches, door, roof sections, then wall panels. Components should be labelled during disassembly to simplify rebuilding at the new location.

Allow 2-3 days to disassemble the device carefully, ensuring no damage to components. Transport requires an appropriate vehicle with room for 2100mm length panels. Rebuilding at the new site follows the original assembly timeline. Some sealants or adhesives used during construction might need replacement during reinstallation.

Does Sisu provide installation service?

Installation services can be arranged separately from the purchase of the sauna package. Pricing depends on location, site accessibility, and complexity factors. Contact Sisu directly to discuss professional installation options in your area.

Alternatively, many customers complete DIY assembly following the detailed instructions. The pre-cut panel system doesn’t require advanced carpentry skills; it simply requires careful attention to the assembly sequence and basic hand tools. Hiring qualified electricians for heater wiring remains essential regardless of who assembles the structure.