Everything you need to know about planning, building, and maintaining your indoor sauna
The minimum recommended size for a comfortable indoor sauna is approximately 4 feet by 4 feet (16 square feet), which can accommodate 1-2 people. For a family sauna, you'll want at least 6 feet by 6 feet (36 square feet) to comfortably fit 3-4 people.
Many homeowners opt for dimensions between 5x6 or 6x7 feet as a good middle ground. Remember to account for bench space, heater clearance, and door swing when planning your layout.
Traditional dry saunas typically don't require a drain if properly ventilated. However, having a drain is recommended if:
A drain makes maintenance easier and helps prevent moisture buildup. Consider your specific situation and local building codes when making this decision.
Yes, many homeowners successfully build their own indoor saunas! If you have basic carpentry skills and can follow detailed instructions, a DIY sauna is definitely achievable. Pre-cut sauna kits make the process even easier.
However, you'll likely need a licensed electrician for the electrical work, especially for the heater installation. The key is proper planning, understanding the requirements for insulation and ventilation, and not rushing the process. Most DIY builds take 2-4 weekends to complete.
Most residential sauna heaters require a dedicated 240V circuit, similar to an electric dryer. The specific amperage depends on heater size:
You'll need proper wire gauge, a disconnect switch, and potentially an upgraded electrical panel. This work should always be done by a licensed electrician to ensure safety and code compliance. Budget $500-1500 for professional electrical installation.
Indoor sauna costs vary widely based on size, materials, and whether you DIY or hire professionals:
Key cost factors:
Starting with a kit and doing some work yourself offers the best value.
Popular locations include:
Consider these factors: proximity to shower, electrical access, ventilation options, privacy, available space, and floor load capacity. Basements and garages often work best for larger saunas, while bathrooms are ideal for compact designs.
A DIY sauna build typically takes 2-4 weekends (16-32 hours of work) for someone with moderate carpentry skills. Pre-cut kits can be assembled in 1-2 weekends. Professional installations usually take 3-7 days depending on complexity.
Timeline factors include:
Allow extra time for inspections, material delivery, and any unexpected challenges.
Cedar is the most popular choice for indoor saunas due to its natural resistance to moisture, pleasant aroma, and beautiful appearance.
Other excellent options:
Avoid woods with high resin content or those that splinter easily. For best results, use kiln-dried, knot-free lumber.
Regular maintenance is minimal but important:
With proper ventilation and care, your sauna should last 15-20 years before needing significant refurbishment.
Yes, indoor saunas are very safe when properly installed and used. Key safety considerations include:
Health-wise, most people can safely use saunas, but consult your doctor if you have cardiovascular issues, are pregnant, or have other health concerns. Never use a sauna while intoxicated.
Can't find the answer you're looking for? We're here to help with any specific questions about your indoor sauna project.
Contact Us