Traditional outdoor saunas

minnesota traditional outdoor sauna dealer and builder

Transform your backyard into a year-round wellness destination with authentic outdoor saunas that blend Finnish tradition with Minnesota craftsmanship.

black painted 6x8 custom euro sauna on deck in the woods
Gray custom built outdoor sauna on finished deck

About Our Outdoor Traditional Saunas

There’s something magical about stepping from your home into a dedicated outdoor sauna—where the stress of modern life melts away in traditional Finnish heat, surrounded by nature’s beauty.

Our outdoor traditional saunas aren’t just backyard additions; they’re personal retreats that connect you to centuries of Nordic wellness wisdom.

Whether you envision a custom-built sanctuary perfectly integrated with your landscape, a charming barrel sauna nestled among trees, or a modern Nordic modular free-standing design that complements your home’s architecture, we bring together Minnesota’s finest craftsmanship with authentic Finnish sauna tradition to create your perfect outdoor escape.

Custom-Built Permanent Traditional Outdoor saunas

Experience the pinnacle of relaxation with a custom-built outdoor sauna, designed to perform in the harsh Minnesota winter climate.

Whether you’re looking for a cozy backyard escape or a large, lodge-style sauna to share with friends and family, we build each sauna to withstand the elements and deliver an authentic, deeply rejuvenating heat experience—all year long.

A custom built sauna is truly a route to build your dream sauna.  If you can envision it, we can find a way to build it. Get started by submitting a quote request or by calling 612.505.9700 today!  

  • Completely personalized design and size
  • Architectural integration with your property
  • Unlimited material and feature options
  • Site-built or modular construction
  • Perfect for: Homeowners wanting one-of-a-kind saunas

white exterior & black trim left angle far

why choose a custom traditional sauna?

Tailored to You: Unlike pre-fabricated models, a custom sauna allows you to dictate every detail, from the layout to the materials used.  You can customize every aspect of a custom sauna. 

Superior Craftsmanship: We’ve built and sold hundreds of saunas, perfecting the process to deliver unmatched quality.  Our custom saunas are built to withstand decades of use so you can enjoy the sauna for years to come. 

Year-Round Enjoyment: Insulated for extreme temperatures, our saunas provide the perfect retreat no matter the season.  We live in Minnesota and as you know, winters get cold here.  Our saunas are designed to perform throughout the cold winter months.

Expert Knowledge & Support: Our team is passionate about saunas and ready to guide you through every step of the process, ensuring you get the perfect setup.  We have years of experience building saunas and can answer any questions you have throughout the process.

We hand build every one of our custom outdoor traditional saunas.  Our team has years of experience in carpentry and sauna building.  

custom sauna building process

Get started

Begin your custom sauna journey by reaching out to us—either by submitting a form on our website or giving us a call 612.505.9700. We’ll provide you with information needed to prep for your outdoor sauna, what the process will entail, and answer any questions you have.  

Explore custom options

Next, we walk you through the available custom options, including size, layout, wood types, heater selection, and additional features. During this stage, we’ll also provide pricing estimates based on your selections.

Sauna design & approval

Once we’ve finalized the specifications, our team will create a design of your sauna. You’ll have the opportunity to review the plans, request modifications, and approve the final design before we move forward.

Production & scheduling

After design approval, your sauna enters our production queue. We’ll provide an estimated timeline and schedule your build accordingly, keeping you informed throughout the process.

Sauna Construction/ Delivery

There are several options for building a custom outdoor sauna – either we will build it in our shop and use a shed hauler to install the sauna at your property, or we’ll build the sauna on site. We’ll keep you updated throughout the scheduling and building process so you know when to expect your sauna.  

Custom Modular "Euro" Saunas

The Euro Sauna Series is a custom outdoor modular freestanding sauna, so you get to decide which wood types go on the interior/ exterior. 

It’s a full sauna kit, everything you need (except for electrical) is included.  It can be installed DIY, or we could professionally install it for you.  

What makes the Euro Outdoor Sauna Series great : 

  • 6 sizes to choose from to fit your needs (starting at 4×6 going up to 7×10)
  • Durable & reliably built (here in Cokato, MN)
  • Customize interior/ exterior wood type, design & layout, benching, windows, door, heater & more! 
  • Quick installation (less than a day with two adults)
  • Fully insulated for year-round performance
  • Customize your Finnleo heater with SaunaLogic 2 Wifi Control so you can power the sauna on from anywhere in the world with your smartphone
  • Customize lighting (backrest or puck ceiling lights) that are controlled with Saunalogic 2 Control
  • Can be taken down & moved when you move 
  • Optional changing room 
  • 5 year warranty on sauna components

Modular "Northstar" Saunas

The Northstar Outdoor Sauna Series features a Nordic Spruce interior/ exterior for a classic Scandinavian look. 

It’s a full sauna kit, everything you need (except for electrical) is included.  It can be installed DIY, or we could professionally install it for you.  

What makes the Northstar Outdoor Sauna Series great : 

  • 3 models to choose from to fit your needs (4×6, 5×6, & 5×7)
  • Durable & reliably built (here in Cokato, MN)
  • Quick installation (less than a day with two adults)
  • Fully insulated for year-round performance
  • Finnleo Designer SL2 w/ Wifi Control (control the sauna from anywhere with your smartphone)
  • Great value price 
  • Backrest RGBW LED Strip lighting (dimmable)
  • Can be taken down & moved when you move 
  • 5 year warranty on sauna components

Why choose a modular outdoor traditional sauna?

All-in-One Convenience – Every modular sauna kit includes everything you need: pre-cut wood panels, a sauna door, benching, backrests, ventilation, lighting, and your choice of a high-quality electric or wood-fired heater.

Take It With You – Unlike built-in saunas, modular saunas can be disassembled and relocated, making them a perfect long-term investment—even if you move!

Easier Assembly – No extensive carpentry skills are required! Modular saunas come pre-fabricated, significantly reducing installation time compared to a fully custom sauna.  (Some of the modular sauna series are easier to install than others). 

Built for Minnesota Winters – Designed with cold-weather performance in mind, our modular saunas retain heat efficiently, ensuring a consistent and rejuvenating experience even when temperatures drop well below freezing. (We have both insulated and non-insulated outdoor modular saunas available – insulated modular saunas perform significantly better during the winter months). 

Electric or Wood-Fired Options – Choose between an electric heater for effortless, push-button control or a wood-fired sauna heater for a more traditional, immersive experience.

Get started by submitting a quote request or by calling 612.505.9700 today!  

bronze tint glass door on northstar outdoor 57 sauna
Northstar Outdoor 5x7 Sauna Painted Black

Heating Systems for Authentic Outdoor Experiences

Every outdoor traditional sauna requires a heating system matched to its size and your preferences.

We offer premium electric heaters from Finnleo,  Iki, Homecraft, Finsauna and Homecraft in sizes for the smallest of saunas to the largest, ensuring optimal heating regardless of outdoor temperature.

For the ultimate traditional experience, we offer wood-burning heaters that create unmatched ambiance and heat quality.

All heaters feature rocks and are designed to throw water on for authentic löyly production—the soul of true Finnish sauna.

Installation - Choose Your Path

We believe in giving our customers options. Whether you’re a hands-on DIYer or you’d prefer to sit back and have the experts handle everything, we have a path for you.

1. For the Confident DIYer: Guided Self-Assembly

Our modular outdoor saunas are designed for straightforward assembly. If you’re comfortable with basic tools and enjoy a weekend project, this is an incredibly rewarding option.

  • What to Expect: The kit comes with a detailed instruction manual that walks you through the process step-by-step.
     
  • Our Support Promise: Unlike other online sellers, our support doesn’t end when the truck leaves. As your local Minnesota experts, we’ve assembled these exact models countless times. If you have a question or hit a snag, we are just a phone call away. That expert backup is the Sauna Supply Co. difference.
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2. Our Signature White-Glove Installation (Minnesota & Surrounding Area)

For the ultimate peace of mind, let our in-house team of professional sauna builders handle the entire installation. This isn’t a third-party service; it’s our own expert crew ensuring your investment is assembled to perfection.

  • What’s Included:
    • Our team carefully un-crates and moves every component to your desired sauna location.
    • We perform a precise, professional assembly of the entire sauna, from the base frame to the ceiling panel and all interior components.
    • We ensure the room is perfectly level, square, and secure.
    • We clean the site meticulously upon completion, leaving you with nothing but a beautiful, ready-to-use sauna.

Choosing our White-Glove Installation means you can relax, knowing the job is done right, done efficiently, and backed by our company’s reputation.

Preparing For Your Sauna

Before you get your outdoor sauna, have these basics locked in:

  1. Create a solid, level base. Choose poured concrete, patio pavers, a pressure-treated deck, or 6-8 in. of compacted Class 5 gravel. The surface must be flat and square—any tilt can twist the frame and make doors stick.

  2. Run or have a plan for 240 volt power. If you’re choosing an electric heater, schedule a licensed electrician to pull a dedicated 240-V, X-amp line (breaker size depends on heater kW).  Pulling high-voltage power can be done after the sauna is installed.

  3. Check access and clearances. We need at least 94″ of vertical clearance and a clear path from the street or driveway to the pad.

  4. Think drainage and snow load. Slope the ground around the pad ¼ in. per foot to direct water away. In heavy-snow zones, confirm your base can handle 70 psf or more.

With these four items squared away, installation is a single-day job (professionally done) and your first löyly is coming soon.

Why Choose Us?

We build saunas the way they should be built—with Finnish expertise and Minnesota craftsmanship. Our team doesn’t just sell saunas; we use them daily, understand their construction inside and out, and have helped over 250 families create their perfect sauna experience—whether through a fully custom done-for-you sauna, DIY sauna kit or a modular system.

Every sauna we build reflects decades of combined experience in woodworking, construction, and traditional sauna design. Our builders handle projects from compact home saunas to luxury custom installations, ensuring precise construction and authentic performance every time.

Before you invest, visit our showroom to experience authentic sauna heat. Feel the difference quality materials and proper construction make. Talk with specialists who understand löyly, ventilation, and the details that separate a great sauna from an expensive disappointment.

Our 50+ five-star reviews on Google come from customers who’ve experienced the difference professional guidance makes—from initial design through your first sauna session.

Your Next Step - Submit a Form

Transform your property into a personal wellness retreat with an outdoor traditional sauna that delivers authentic Finnish heat therapy just steps from your door. 

Ready to explore which outdoor sauna perfectly matches your vision? Share your property details and preferences—our outdoor sauna experts will create a plan that brings Nordic wellness home.

Common Questions

Here are some of the most common questions people ask.

Exceptionally well! Proper insulation maintains heat efficiently even at freezing temps. Snow actually provides additional insulation. Winter is prime sauna season—the hot-cold contrast therapy of sauna to snow is unmatched. All our outdoor saunas use materials and construction methods proven in Nordic climates. Many customers find winter their favorite sauna season.

Electric offers convenience—set temperature, walk away, consistent heat. Wood-fired provides tradition—the ritual of fire-building, unique heat quality, aromatic smoke, and operation without electricity. Electric heats in 45-60 minutes; wood takes 60-90 but many prefer the process. We’ll discuss your lifestyle and preferences to find your ideal match.

5’x7′ to 6’x8′ accommodates most families comfortably. Smaller works for couples; larger allows entertaining. Remember: bigger saunas take longer to heat and cost more to operate. Consider both current and future use. Many customers later wish they’d gone slightly larger, so when in doubt, size up within your budget.

Yes, we have custom and modular outdoor traditional saunas on display at our Cokato, MN showroom!  We even have a sauna built specifically to try sauna for yourself (in a private room).  

Have other questions?

If you have other questions or need specific information, don’t hesitate to ask. 

Visit Our MN Sauna Showroom

Experience the difference quality makes at our Cokato showroom, where you can see, touch, and even try our saunas before making your decision. Our showroom features models of custom indoor, custom outdoor and modular saunas, allowing you to compare construction quality, experience different wood types firsthand, and feel the authentic heat firsthand. Whether you’re drawn to the aromatic Western Red Cedar, the clean look of Canadian Hemlock, or the traditional Nordic Spruce (and more), seeing and smelling these woods in person makes all the difference.

Our sauna experts are here to answer your questions, explain the differences between modular and custom construction, and help you visualize how a sauna would fit into your lifestyle and property. Many customers tell us that visiting the showroom transformed their understanding of what they wanted—there’s simply no substitute for experiencing seeing and sitting in a sauna before you buy.

Our sauna showroom is located at 500 Cokato St W in Cokato, Minnesota.  View our current business hours on Google Business Profile here or call 612.505.9700 to schedule an appointment. 

start your sauna journey

Submit the form to get a quote, ask questions, or receive expert guidance from one of our sauna specialists.

Start your outdoor sauna journey

Our sauna specialists offer personalized guidance and expert recommendations tailored to your space, budget, and wellness goals.

After you submit the form, we’ll be in touch to discuss your project. 

Start your sauna journey

The Sisu Sauna is a great choice for straightforward installation and flexible customization. Submit the form, and a sauna specialist will reach out shortly to discuss your project.