Can You Put a Sauna on a Second Floor?

Yes, you can usually put a home sauna on a second floor. A standard residential upper floor is built to carry the load of a typical one or two person electric or infrared sauna spread over its footprint. The real questions are weight distribution, getting the panels upstairs, and protecting the floor from heat and moisture.

The short answer: sauna on a second floor

Most upstairs rooms can hold a home sauna. Building codes design residential floors for a live load of about 40 pounds per square foot plus the floor's own dead load, so a second floor is generally rated for roughly 50 pounds per square foot total. A one or two person infrared or electric sauna weighs about 300 to 800 pounds, and once you divide that across its floor area it works out to a modest load per square foot, well within a sound floor's capacity. The safest candidates are lightweight infrared and plug-in electric cabins. Heavy timber or fully loaded traditional saunas deserve a closer look, ideally by a structural engineer. Before you buy, confirm the sauna's assembled weight and footprint, check the room for sagging or damage, and plan how you will move the panels up the stairs.

How much weight can a second floor hold?

Residential floors are engineered to a live load standard, commonly 40 pounds per square foot for living areas under the International Residential Code, on top of a dead load of roughly 10 to 15 pounds per square foot for the structure itself. That gives a healthy safety margin for furniture, people, and appliances.

A sauna is heavy but its weight spreads out. An empty cabin works out to roughly 25 to 30 pounds per square foot across its base, which a properly built floor can carry when the load is evenly distributed. Because a sauna sits against a wall, positioning it so the base runs across or near the floor joists, rather than parallel to a single joist span, spreads the load the way the structure prefers.

Which saunas are safe to put upstairs?

Sauna type	Rough weight	Second-floor fit
One person infrared	About 200 to 350 lbs	Excellent
Two person infrared or electric	About 350 to 600 lbs	Good on a sound floor
Larger traditional (heater plus rocks)	800 to 1,200 lbs and up	Check with a structural engineer

Infrared and small electric saunas are the easy answer upstairs. They are lighter, they break down into panels a couple of people can carry, and many plug into a standard outlet. Heavier traditional builds, especially those with a stone-loaded heater and multiple occupants, push the load higher and are worth a professional review before you commit.

What to check before installing a sauna upstairs

Confirm the assembled weight and footprint from the manufacturer, then inspect the room: look for sagging, cracks, water damage, or bouncy floors, and note joist size and spacing where you can. Protect the finish floor, since heat and humidity are hard on hardwood; a tile, sealed, or non-combustible surface under the cabin is smart. Plan the path upstairs before delivery, because the limiting factor is often the staircase and doorways, not the floor. And measure ceiling height, as many saunas need close to 7 feet. If anything about the floor looks off, a short consult with a structural engineer is cheap insurance on a big purchase.

Frequently asked questions

Will a sauna damage my upstairs floor? The weight is rarely the issue on a sound floor. Heat and moisture are the bigger risk to hardwood, so use a heat-safe, moisture-tolerant surface under the sauna and keep the room ventilated.

Do I need a structural engineer? Not for a light infrared or small electric sauna on a normal floor. For a heavy traditional unit, an older home, or any floor that shows sagging or damage, a quick engineer's assessment is the safe call.

Is a basement better than a second floor? A basement slab handles weight and moisture with less fuss, so it is often the simpler choice. A second floor is still very workable for lighter saunas when the floor is sound and you protect the finish.

If an upstairs spare room or loft is your spot, a lightweight infrared cabin is usually the smart match. Browse options in our infrared saunas collection and our compact portable infrared saunas, and use the sauna weight and floor load checker to sanity-check your room. Not sure a room will work? Our sauna buying guide covers placement, and you can always contact us with your dimensions. Every sauna ships with free US shipping, financing, and authorized-retailer support.