Sauna Interior Height Blueprint: Ceiling and Bench Dimensions That Work
Heat rises. A well-designed sauna uses precise bench and ceiling heights to take advantage of that basic principle. You want to sit in the heat and steam, not below it. You want your whole body to be warm, not just your head. Getting the ceiling and bench heights right takes a sauna from good to great, and it’s easier than you think.
Follow our Sauna Interior Height Blueprint and discover the Finnish secret to soothing, full-body heat.
Interior Sauna Height Quick-Reference Guide
| Sauna Element | Height |
| Foot Bench | Level with or above the heater’s stones |
| Sitting Bench | 15” - 18” above the foot bench |
| Ceiling | 40” - 48” above the sitting bench |
Sauna Interior Height Blueprint
In Finland, sauna ceilings are typically 7'6" - 8' high.
If your current plan has a 7' ceiling, you might miss out on the warmest pocket of heat and steam. Follow these three rules to discover how tall your sauna should be, and where to place your benches.
Rule #1: Feet Above the Stones
One of the most important secrets to Finnish sauna design is the Law of Loyly. Or put simply: feet above the stones.
The upper surface of your foot bench should sit level with - or slightly above - the top of the heater’s stone pile. This keeps your entire body in the path of the hot, steamy air. Measure to the top of your sauna heater and add 1” - 4” for the stones.
Note: Open-style heaters like the HUUM Drop offer a little more wiggle room. The exposed stones let heat escape from the sides, so you get the same effect even if your feet are a few inches below the top of the heater.
Rule #2: Leave Some Legroom
Your sitting bench should be 15” - 18” above your foot bench. This gives you plenty of room to sit comfortably during longer sessions.
Rule #3: Keep Your Head in the Clouds
Your sauna’s ceiling should be 40” - 48” above your sitting bench, with 44” being the sweet spot. This height makes room to sit up tall while you steep in the löyly.
Sauna Height Dimensions
(Sauna Heater & Stone Height) + (Bench Gap Height) + (Ceiling Gap) = (Sauna Interior Height)
EXAMPLE: 30” (Sauna Heater & Stone Height) + 18” (Bench Gap Height) + 48” (Ceiling Gap) = 96” (Sauna Interior Height)
Most saunas should be between 7’6” to 8’ high. If your plan fits in these dimensions, you’re on the right track.
Sauna Ceiling and Bench Height Examples
Let Veeti, our chief sauna nerd, walk you through some examples of well-designed sauna interiors and explain what makes them work so well.
Designing a Sauna for People With Disabilities
Building a sauna that welcomes people with disabilities takes some creativity, but it’s far from impossible. The following options are popular workarounds to accommodate everyone without compromising on ceiling and bench heights.
Disability-Friendly Sauna Design:
- Motorized Benches - These devices lift bathers from sitting level to the optimal bench height.
- Recessed Heaters - Installing the sauna heater in the floor with an embedding flange lowers height required to keep bathers’ feet above the stones.
- Climate-Blending Devices - These devices mix the hot, steamy air from the ceiling with the cooler air from the floor to equalize the sauna temperature. Explore Saunum Sauna Heaters to learn more.
These are just a few of the easier ways to create a space that’s made for everyone. Your creativity is the limit here.
If you are building a sauna for someone with a disability, check out our ADA-compliant sauna doors.
The Right Height
Now that you know how to create the perfect ceiling and bench heights, it’s time to add these measurements to your sauna plan. Download our free Sauna Interior Height Checklist to help calculate your sauna’s dimensions and keep every measurement in one place.
Still have questions about your ceiling height? Call us or send us a message. Our team is ready and waiting to get you one step closer to build day!
Take the next step to a finished building plan with our Sauna Ventilation Guide.
Frequently Asked Questions
Q: Why do I need to have my feet above the sauna stones?
A: Keeping your feet above the stones helps you enjoy full-body warmth in the sauna. When you keep your feet on the ground, they feel much cooler than the rest of your body, leading to frozen feet and a roasting head. This quickly ruins a sauna experience.
Q: Should my sauna ceiling be flat or round?
A: Flat sauna ceilings work just fine. They’re the most common sauna ceiling style and will create great sessions. Round ceilings work a little bit better, creating a smooth path for the heat and steam to follow without sharp corners to navigate.
Q: Is it okay to have a slanted sauna ceiling?
A: Yes! But the highest point of the ceiling needs to be over the benches. Otherwise the löyly gets trapped and you’re left cold.
Q: Can a sauna ceiling be too high or too low?
A: Yes, and both come with their own unique problems. A sauna ceiling that sits too low sacrifices comfort. A ceiling that’s too high lets the heat and steam collect above your head, leaving you cold and underwhelmed below.