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Outdoor Sauna Builders in Minneapolis

Lifetime Quality Sauna

Embodying the American spirit, BW custom saunas are built to bring people together and create lasting memories for generations to come. Whether it’s a cozy home sauna, outdoor sauna, or a mobile sauna, each of our designs offer a space of warmth and relaxation built for your Minneapolis oasis.

Send a text to Jayson
Mark Funke
Mark Funke
The quality of the craftsmanship is 10/10. My clients have been loving the look of the unit and of course the good heat.
John Pederson
John Pederson
I've worked with Jayson (the owner) on about a half dozen builds now, he has always been extremely responsive, professional as well as fair and reasonable. I could not recommend BW more strongly.
buhrsmith
buhrsmith
The guys at BW are seasoned builders that know how to layout beautiful sauna spaces - for me, on a trailer. I most enjoyed how dedicated to the craft of building they are and they patience to guide me through a final build spec.

Why BW Sauna Co?

Handcrafted in Duluth Minnesota

In a world where everything is bought from large corporations manufacturing parts with the cheapest labor, we wanted to go in another direction. When we set out to build the best handcrafted custom backyard saunas we could in Duluth, Minnesota, we knew it had to start with finding the best people behind every bolt, board, and weld. 

We have the privilege to work with some of the best craftsmen in Minnesota. Fellow Americans who are pushing to keep our economy strong. Those that work with their hands to make a living, making a difference, in small ways and big. The Saunas we build are a lasting testament to these people. 

Details that Matter.

Complete Custom Build
Options.

Custom Artisan Craftsmanship. We truly work with you to bring to life a unique space that is expressive and tailored to your needs. Well-rounded, low-maintenance, and completely you.

Double Pane Windows

Double Pane Windows. Single-pane windows seen in most saunas fog up, drip down, and slowly rot out the frame and even the wall. Our windows are custom-cut and delivered with argon insulation to ensure a fog-free sauna.

All-screw frame assembly for zero movement

Portable Saunas. Portable saunas are usually ripping down a highway at 60 mph. Normal framing standards do not account for this. That’s why we moved to screws to ensure zero shift during headwinds, bumps, and normal road wear.

Solid Steel Foundations

A Steel Foundation. A steel foundation means zero movement. We’ve seen aluminum and even wood bend, crack, shift, and do anything but stay still during transport or install—leaving cascading problems that manifest over time.

Custom Wood Selection Options

4x4 Ash Cladding
White Cedar
Clear Pine
Char Cedar
Ignite Dragon
Brown Cedar
Grey Cedar
Oiled Cedar
Oiled Finish Ash
Aspen
Thermo-Aspen
Thermal Pine Yakisugi
Thermal Pine Yakisugi
Red Oak
Thermo-Pine Clear
Spruce
4x4 Ash Cladding
White Cedar
Clear Pine
Char Cedar
Ignite Dragon
Brown Cedar
Grey Cedar
Oiled Cedar
Oiled Finish Ash
Thermal Pine Yakisugi
Thermal Pine Modern Brown
Thermal Pine Yakisugi
Red Oak
Magnolia
Thermo-Pine Clear
Spruce
Alder Interior Cladding Trim
Alder Interior Cladding
White Cedar
Clear Pine
Char Cedar
Ignite Dragon
Brown Cedar
Grey Cedar
Oiled Cedar
Oiled Finish Ash
Thermo-Aspen
Thermal Pine Yakisugi
Thermal Pine Modern Brown
Thermal Pine Yakisugi
Red Oak
Thermo-Pine Clear
Spruce
Aspen
Wax Fired
Custom Wood Selections. We offer custom wood selections and the expertise to match your design with the best hand-selected wood type and stain.

Step one

Choose your base model

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6.5 x 14 ft Portable Sauna (47k+)

Gooseberry

The robustness of a full-sized sauna, with the agility for finding that special place. Our 14 ft custom mobile sauna is our flagship.

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6.5 x 12 ft Portable Sauna (43k+)

The Superior

A balanced portable sauna for those who want the full experience. Comes with a cool-down changing room and the best in handcrafted. custom-quality.

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6.5 x 10 FT Mobile Sauna ($39k+)

The Ontario

The robustness of a full sized sauna, with the agility for finding that special place. Our 10 ft custom portable sauna is ready to be your oasis.

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6.5 x 8 ft Mobile Sauna ($37k+)

The Huron

The nimble and agile Huron is here as the entry-level outdoor mobile sauna. At 8 ft, it will fit nicely in your garage or tucked away in your backyard.

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Custom Backyard Sauna 8x12, Outdoor Saunas in Minneapolis MN !

8 x 12ft Home Sauna (40k+)

Grand

The big boy, the Grand takes after grand island and is centered around the whole family. Allowing everyone to take in the view.

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Stationary Custom Sauna 8x10 in Duluth MN !

8 x 10ft Backyard Sauna (34k+)

Stannard

Our flagship stationary custom sauna built for all around use.  Handcrafted and at the perfect size for groups or solo sauna enthusiasts.  

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Custom Sauna for sale in Duluth MN! Home Sauna 8x8!

8 x 8ft Home Sauna (29k+)

Windigo

The Windigo is the flagship medium sauna. Boasting an 8×8 footprint and offering several layout variations, this sauna is the perfect fully custom home sauna.

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Outdoor sauna for sale in Minneapolis MN, Stationary Sauna 8x6 !

6 x 8ft Home Sauna (22k+)

York

Fitting up to 3 people. The York model is designed to excel at cabin environments, all while maintaining an economical footprint.

Step two

Make it your own

Robust
Steel Frame

8 Layer
Heat Design

All-Weather
Exterior & Interior

Löyly-IKI guarantees a supreme bathing experience even for a larger sauna (20-40 m³).

Highest Quality
Heat Options

Personally
delivered.

How We Install?

The best in
Airbnb value.

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Mobile sauna
for anywhere
you go.

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Find your
view.

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Your Home Sauna Should Tell A Story

Story Driven Design

Take yourself to the coldest day on the winter North Shore. The blackness of the night while you look out into the -30 degree air. The waves, never ending voice always heard but not seen. The howling of the winds caught in the jagged shore. Stepping into the dim lit warmth, the fire dancing off the windows reflection.

A Sauna on the cliffs edge of Lake Superior transports you to another world. A humbling peace in the shadow of a giant.

Night Time Superior North Shore near Duluth Minnesota - Custom Cabin Sauna, portable saunas

Mobile Saunas for your next adventure

For thousands of years, saunas were confined to where they were built. Now, in the heart of Minnesota, mobile saunas offer the ability to get your sweat on wherever the road carries you, from a cliff edge to the shores of the great Lake Superior. Our wood-fire saunas are ideal for anything from post-exercise recovery to vacation destinations to extreme cold plunges. The possibilities are truly endless.

Our Story

A legacy of craftsmanship & excellence.

In an industry where anyone and everyone seems to be building saunas to make a quick buck, we’ve stepped aside to invest solely in building the best-quality saunas money can buy.

About BW Sauna Co.

Passion

We’re second-generation craftsmen with a genuine passion for sauna.

Creativity

We consider every detail, blending engineering with artistry.

Intentionality

Purposeful design means every choice has a purpose and function.

Grounded

It's not about looks and status. We build saunas meant to serve you.

Meticulous attention to detail. Our team is focused, humble and hardworking.

Founder lead. Jayson stands behind his work. Or in front it in this case. 

Nationwide reach. We’ve delivered to all corners of the country. 

mobile sauna lifestyle

Personal passion. Our builds come from our own personal experience with sauna.  

Download Your BW 2026 Catalog

When you start exploring what a custom sauna could look like, you might already have that exact idea in mind: that perfect finish with a wide panorama window. Or something more true to its history, humbly nestled in the lakeside corner. Either way, we hope this catalog offers inspiration for your journey

Download the 2026 Catalog

BW Sauna Co.

Why choose steel over aluminum frames for sauna construction?

At BW Sauna Co., every design decision is rooted in durability, performance, and long-term value. That’s why we frame all of our mobile saunas with steel instead of aluminum, and why the base of our stationary saunas is also built from steel.

Strength You Can Rely On
Steel is significantly stronger than aluminum. For mobile saunas that travel thousands of miles, encounter bumps, curves, and temperature shifts, strength matters. A steel frame ensures the structure stays square and solid, resisting warping, twisting, or stress fractures over time. It is built to hold up through seasons of use on the road and still feel like new.

Weight That Works With Us
While aluminum is lighter, that weight savings often comes at the cost of structural integrity. For us, the slightly heavier weight of steel translates to better towing stability and lower risk of flexing or damage in transport. Our trailers are designed to handle the weight efficiently without compromising the sauna experience.

Corrosion Resistance Where It Matters
All steel used in BW sauna frames is treated and coated to prevent rust and ensure longevity, especially critical in humid environments like saunas. Properly prepared steel actually outperforms raw aluminum in resisting corrosion over time when exposed to the moisture and heat of regular sauna use.

Consistency Across Stationary Builds
Even in our stationary models, the base, the point of contact between the sauna and the ground, must resist movement, moisture, and long-term wear. Steel provides a dependable, immovable foundation that holds up under weight, humidity, and shifting temperatures.

Made for Harsh Environments
Our clients use saunas in backyards, lake properties, mountain retreats, and off-grid locations. Steel allows us to build structures that can endure diverse climates and real-life use, not just showroom conditions.

BW Sauna Co.

The 8 layers of a BW Sauna

Framing – It is the fitting together of pieces to give a structure support and shape. Headers are built over windows and doors to support the roof load.

Insulation – This is the insulation of the unit. It’s a standard fiberglass insulating material and works to trap air and slow the transfer of heat.

Breathable Membrane – This is a breathable, water-resistant membrane made to resist moisture and release water vapor and works as an air barrier to the structure.

Maintenance Free Siding – This is the outer layer of the structure. It’s a fully waterproof, maintenance free siding option, and is available in many different colors/styles.

Sheathing – 7/16″ OSB sheathing applied over the framing, which holds everything together and prevents the building from ever swaying or bending. It’s used as a nailing base for your siding materials as well.

Foil Vapor Barrier – This is applied over the framing in the hot room areas. It serves as a vapor barrier to the exterior, while also reflecting the heat back inside the room.

Furring Strips – These are used to separate the wood paneling from the exterior wall, to give an air gap for the space to breathe. It helps to dry the wood and is crucial for reflecting the heat back into the room.

Wall Paneling – Commonly used as cedar T&G, but many different forms of paneling can be used. This is the outer layer of the interior and is a wood that can soak up steam and deal with heat absorption without any type of long-term damage. It is also highly resistant to fungus, rot, and decay.

BW Sauna Co.

Thermory Wood Library

We’ve sourced some of the best wood on the market to offer a wide variety of food finish options. Below are some of the most popular wood finishes our clients have used. 

Popular Combinations

A Mobile Sauna That Offers More

BW Sauna Co.

Quality Heat Sources

We will work with you to understand and advise the right heat source based on your lifestyle, sauna size, and features.