Minnesota Custom Indoor Sauna Builder

Custom Indoor Saunas.

Let's Build Your Dream Indoor Sauna.

Transform any room in your home into a personal wellness retreat with a custom indoor sauna designed to fit your space and your vision. Whether you’re looking for a cozy two-person escape or a spacious luxury sauna, we craft each unit to your exact specifications, ensuring a perfect fit and seamless integration into your home.

Building a custom indoor sauna be a little confusing – you may be wondering things such as: What do I need to know about ventilation?  How big should the sauna be?  What is the right heater for my sauna?  And more…

We will answer any questions you have and guide you along the way. We have years of sauna building experience and will ensure that the process is enjoyable, just like taking a sauna should be.  

We take a tremendous amount of pride in providing excellent customer support, and put a high level of attention to detail in our sauna builds. 

We can build you the sauna that you have dreamed about.  Give us a call 612.505.9700 or reach us through our contact form to get started! 

sauna supply showroom cedar sauna benching
Our Custom Cedar Showroom Sauna

Customizing Your Indoor Sauna

many custom options available.

Every sauna space is unique, and our custom indoor traditional saunas are designed to reflect your style and needs.

From the layout and materials to the finishing touches, we offer a wide range of customization options to create a sauna that is both functional and beautifully crafted.

Below are the the custom options you can put in your sauna.  The biggest components of the sauna are size & layout, heater & control, and wood type.  

Our saunas are built to withstand hard use for decade (like the saunas we grew up using). 

Customize Sauna Size & Layout

The size and layout of your indoor sauna is one of the largest factors to consider.  Is there an ideal location for it?  Do you want to put it near a shower, or put a shower in the sauna?  What about venting? 

There are several factors to consider when installing an indoor permanent sauna.  Let us help walk you through the process to ensure that the sauna is going in the best location.   Call 612.505.9700 or reach us through our contact form for any questions you have! 

Other factors to consider are : 

  • Do you want to lay down in the sauna?  
  • How many people will typically be in the sauna? 
  • Electrical requirements.
  • Space requirements. 
finnleo himlaya rock tower heater in cedar outdoor sauna
Finnleo Himalaya Rock Tower, a premier sauna heater

Sauna Heater & Control

After you have decided on the size and layout of the sauna, we will help you find the appropriately sized heater for it.  We offer a variety of different sauna heater brands in our custom outdoor saunas.  Each heater offers different sauna experiences.

Featured Sauna Heater Brands : 

  • Finnleo (Electric) 
  • Iki (Electric & Wood-Fired)
  • FinSauna (Electric)
  • Harvia (Electric & Wood-Fired)
  • Cozy Heat (Wood-Fired)
Cedar sauna benching
Clear Western Red Cedar Indoor Traditional Sauna

Interior Sauna Wood Type

All our wood is mill-direct, using only the highest quality, hand-selected wood. All from verified sustainable forests. All wood choices are chosen for their ability to hold up for years (typically decades) in the harsh sauna environment. 

All wood that touches skin (benches, backrests, duckboard flooring, heater guard, headrest) is chosen for staying cool to the touch of the skin (No knots – they get hot in the sauna heat!)

Four of the most common wood types we use on the interior of our saunas are clear western red cedar, clear canadian hemlock, black taika, and nordic spruce with abachi benching.  But, we do offer additional wood types such as heat-treated alder, aspen, knotty-cedar, and much more.  Don’t hesitate to ask us about additional wood types! 

Clear Western Red Cedar offers a luxury feel to the sauna with multiple different tones.  Cedar has a unique and desirable scent to it.

Unlike Cedar, Clear Canadian Hemlock offers a single wood tone.  It’s a brighter, reddish wood.  

Black Taika is certified birch plywood developed exclusively for high performance in the harsh sauna environment. 

European Grade A Nordic Spruce is commonly found in saunas in the Nordic Region, where saunas originated. 

nordic spruce sauna with 2-bar abachi backrest
Custom Nordic Spruce Interior with 2-Bar Backrest

Sauna Backrest

A backrest in the sauna is comfortable, looks nice, and keeps your skin off the T&G walls (particularly helpful when you use a knotty wood species on the walls).  Over time saunas will build up sweat. It is easier to clean or replace a backrest than an entire wall, making your sauna look fresher, longer.

Every custom indoor sauna comes with a standard 2-bar backrest.  There are 7 additional upgraded backrest styles to choose from, view all of the backrests below. 

Standard 2-Bar

Available in all wood types

3-Bar

Available in all wood types

3-Bar Wide

Available in Hemlock

5-Bar Heat-Treated

Available in Abachi & heat-treated Alder

3-Bar Wide Heat-Treated

Available in Hemlock and heat-treated Alder

2-Bar Wide

Available in Hemlock

6-Bar Curved Heat-Treated

Available in all wood types and heat-treated Alder.

6-Bar Curved

Available in all wood types

custom knotty cedar sauna with iki pillar heater and rgbw strip lighting on backrest
LED RGBW Strip Lighting on Backrest

Sauna Lighting

There are multiple different options for sauna lighting.  The most common is the RGBW Strip Lighting, but it’s not the only option.  

The RGBW LED strip lighting and the RGBW LED puck lights are compatible with the SaunaLogic 2.0 Control.  Change the light color and brightness to suit your liking.  The lights can be purchased and set up a la carte too.  

RGBW LED Strip Lighting

LED strip lighting comes pre-installed behind your backrest. Can also be placed under bench. 

  • Pairs with the SL2 control and app
  • Cycle through multiple colors, or white
  • Dimmable

RGBW Puck Lighting

Puck Lights go into the ceiling.

  • Pairs with the SL2 control and app
  • Cycle through multiple colors, or white
  • Dimmable

Frosted Wall Light

Mounts on the wall.

  • Runs independently from control
  • Supply 120 V power to light
  • Available with switch on light, or supply your own.

Sauna Door

Each sauna door swings out.  The glass doors feature a single pane, tempered glass with a latch.  Wood doors feature a single clear, tempered pane down the center, with ball & catch latch or self-closing hinges. 

Door Types Available : 

  • Douglas Fir Frame Door w/ Clear Glass Insert 
  • Bronze Tint All Glass Door
  • Clear All Glass Door 
  • Satin (Frosted) All Glass Door 

Our sauna doors are available in sizes : 

  • 24″ x 72″ 
  • 24″ x 80″
  • 30″ x 80″
  • 36″ x 80″
  • *Custom door sizes are available 
bronze tint 16 x 60 windows on outdoor euro sauna
Vertical Windows in Sauna

Sauna Windows

Our standard sauna window comes in a single pane, tempered glass.  They’re available in both clear and bronze tint.  All windows pre-hung in the panels. 

Below are our standard sauna window sizes in the custom sauna.  We can do entirely custom window sizing if the below options are not what you’re looking for.

Standard Window Sizes: 

  • 12″ x 30″
  • 16″ x 30″ 
  • 12″ x 60″ 
  • 16″ x 60″
custom thermo-aspen sauna with duckboard walkway
Custom Thermo-Aspen sauna with duckboard.

Duckboard Walkway

A duckboard walkway comes standard with the sauna.  A duckboard is nice to walk on and looks good in the sauna, but it’s not a requirement to have one.  

An additional duckboard can be purchased for outside of the sauna (entryway, etc).  

custom cedar sauna interior with bench skirts
Custom Cedar Sauna w/ Bench Skirts

Bench Skirts

Bench skirts offer an aesthetic upgrade in the sauna.  

Twilight Interior w/ Benchskirts

Rounded Bullnose Trim

Rounded Bullnose Trim sits on the bench face.   

It comes in either the standard bench wood type, or heat-treated alder. 

Bullnose Trim offers an aesthetic and small comfort while sitting on the sauna bench. 

Delivery & Installation

A sauna is one of the more relaxing, rejuvenating experiences that exists. Installing it in your home should be no different.

Your entire experience in working with our team at Sauna Supply Company is customized. Whether you’d like us to install your sauna for you, or DIY the entire thing yourself, we’ll be there to help you along the journey.

Our team will ensure that from the second we start talking about your sauna project to long after we leave that you are taken care of every step of the way. 

Our Process

Our custom sauna process is simple.  Don’t hesitate to ask any questions throughout it – we’ve built and installed over 150 saunas so we know how to help!   

Submit a quote

It starts when you submit a quote, or give us a call (612.505.9700).  

After you submit a form, we’ll reach out to you about your sauna project!  

Discuss sauna details

We’ll walk you through the different sauna options available, preparation needed before installing a sauna, and answer any questions you have during the process.

Get a CAD

After you’ve decided on the custom options, we’ll get a CAD drawing for it.  You’ll still have time to change the sauna if you want. 

Start building process

After you’ve approved the CAD, the building process will start.  

Typically custom saunas have a lead time (duration changes throughout the year).  We do have saunas in stock at all times.

Install the sauna & take steam

After the sauna is ready, we’ll install it!  Otherwise if you’re building the sauna DIY it can be picked up at our shop or delivered to your door. 

Why Work With Us?

We know saunas, inside and out.

Our relationship with saunas is deeply personal. Long before we started building them, we were using saunas on a daily basis. 

We believe that to understand a sauna, you’ve got to use it. 

Our residential Finnleo sauna rooms come with a five year warranty.  We service what we sell and have North American customer support from 8AM-5PM CST weekdays and 9AM-12PM CST on Saturday.  Give us a call at any time (612)505-9700 or contact us online

Our commitment is not simply to put a sauna in your home. 

It is to deliver an experience unlike any other each and every time you step into your personal sauna escape.

custom thermo-aspen sauna with all glass front
custom thermo-aspen sauna with all glass front
Quote my indoor sauna.

The traditional Finnish Sauna is stress free. So is our process. We share our passion with folks who appreciate Minnesota nice and have a desire to share our passion for sauna.

A custom sauna offers nearly endless possibilities.  Briefly describe your sauna project and submit the form.  We’ll get in touch with you to discuss building your custom sauna.  

Quote My Custom Sauna

Submit a quote request for a team member to reach out to you about your sauna project. 

custom cedar sauna
custom cedar sauna interior
custom finnleo euro sauna interior with cedar
Finnleo Euro custom tradtional sauna under a deck
custom cedar 5x6 finnleo euro outdoor traditional sauna
custom cedar sauna with backrest and valence strip lighting
cedar sauna interior
finnleo custom sauna with clear canadian hemlock
custom finnleo hemlock sauna with valence lighting and six bar curved backrest
finnleo hemlock sauna
custom hemlock sauna interior with finnleo himalaya rock tower
finnleo euro hemlock sauna with rock wall
large custom hemlock sauna with two glass windows on front
hemlock sauna with bench skirts
custom hemlock sauna with heat treated bullnose trim on benches
black taika/ alder custom wood-fired sauna
black taika sauna interior with iki wood fired stove
finnleo black taika sauna
custom finnleo black taika sauna with hemlock benching and bench skirts
a custom black taika sauna with all glass front
custom finnleo black taika with hemlock benching and backrest sauna
custom nordic spruce sauna with LED strip lighting and bench skirts
custom nordic spruce sauna with abachi backrest
finnleo custom sisu traditional indoor sauna with nordic spruce wood exterior
nordic spruce sauna interior with finnleo himalaya rock tower heater
nordic spruce changing room
nordic spruce sauna with 2-bar abachi backrest
cedar sauna with 2bar backrests
custom finnleo euro sauna with 2bar backrest
custom finnleo cedar sauna with 2 bar backrest and valence lighting
custom cedar sauna with 3 bar backrest
custom cedar sauna with 3 bar backrest
custom clear western red sauna interior
clear hemlock sauna with window and 3 bar wide backrest
cedar 3 bar wide backrest
custom cedar traditional sauna interior
clear canadian hemlock sauna with 3 bar wide backrest
finnleo 5-bar heat treated backrest
our showroom sauna left bench
3 bar wide heat treated backrest
custom finnleo cedar sauna w/ all glass front and 3 bar wide heat treated backrest
finnleo euro hemlock sauna interior
right wall on cedar sauna
clear canadian hemlock sauna interior with deco interior
finnleo black taika sauna
custom black taika sauna
custom finnleo euro sauna interior with cedar
finnleo 6 bar curved backrest in cedar sauna
custom cedar sauna with himalaya heater
finnleo euro cedar sauna with 6 bar curved backrest
finnleo 6 bar curved sauna backrest
curved sauna backrest with LED strip lighting
finnleo hemlock outdoor sauna with 6 bar curved backrest
custom cedar sauna with 6 bar curved backrest
custom cedar sauna with all glass front
custom cedar sauna with 3 bar backrest

Douglas Fir

douglas fir wood frame door on euro 5x6 euro sauna

Bronze Tint

finnleo all glass bronze tint door

Satin

finnleo satin glass door

Clear

Finnleo clear glass door
large custom hemlock sauna with two glass windows on front
hemlock sauna with bench skirts
nordic spruce sauna
custom finnleo black taika sauna with hemlock benching and bench skirts
custom cedar sauna remodel with bench skirts