How to Build a DIY Home Sauna: Step-by-Step Guide

Saunas are well known for their ability to promote relaxation, rejuvenation, and well-being. Stepping into a sauna is like entering an oasis where the stresses of daily life seem to melt away. With the ever-growing popularity of saunas, many people are now opting to build their own – seizing the opportunity to customise the perfect DIY home sauna experience for their home.

DIY Home saunas offer numerous advantages beyond the obvious cost savings. It allows individuals to create a sauna tailored to their specific needs, whether it’s a traditional Finnish sauna, an infrared sauna, or a steam sauna.

However, building a sauna can quickly become overwhelming without the right knowledge and guidance. In this article, we will share our sauna-building tips and tricks to help you start your DIY sauna project like a pro!

Why Build a DIY Home Sauna? Planning & Considerations

We all know and love the many benefits including a daily sauna session into our lives can bring. But there is still the hassle on leaving your home early on those cold mornings to visit a nearby spa to make it part of your routine. Building your own DIY home sauna is the perfect solution! It allows you the flexibility to incorporate a sauna session right in the comfort of your home when time permits.

But before starting your DIY home sauna building project, planning and being aware of some key considerations is important. Here are some of our DIY sauna planning tips to ensure you have the best possible DIY experience:

Choose the Right Location for Your Home Sauna

Begin by assessing the available space for your sauna room. Consider whether you want an indoor sauna or a DIY outdoor sauna and evaluate the dimensions and layout of the area. This will help you determine the appropriate sauna size and design within the allocated space.

An indoor DIY sauna is typically easier to install and may require less maintenance than an outdoor sauna. However, outdoor saunas offer more freedom in design and material selection. When deciding on size, also account for the number of people who will use your sauna at once.

If you’re building an indoor sauna, ask yourself the following questions:

• Does this location allow for proper ventilation?
• Is there enough space for seating?
• Where will the heating elements be installed?
• Are there any potential obstacles to avoid?

For outdoor saunas, consider the following:

• Do I have sufficient privacy?
• Is there protection from the elements?
• Will additional electricity and plumbing be required?

Regardless of whether your DIY sauna is indoors or outdoors, remember that size matters. The larger the sauna, the harder your heat source will have to work, which can increase costs. For example, if you’re building a larger sauna, such as 10×12 feet, you may need to consider a more powerful heat source to maintain the desired temperature.

How Much Does It Cost to Build a DIY Home Sauna?

The cost of building a DIY home sauna can vary significantly depending on the materials you choose and the complexity of your sauna design. Setting a realistic budget is crucial to avoid overspending. So, how much does it cost to build a sauna? Here’s a breakdown of essential items to factor into your overall costs:

You must account for the costs of the following:

• Materials (such as wood and insulation)
• Tools for construction
• Sauna-specific equipment, like heaters and temperature controls
• Electrical work and plumbing (if required)
• Seating for comfort and usability
• Potential home insurance increases (some policies may require additional coverage for a home sauna)
• Any optional extras or upgrades you want to include, such as lighting or sound systems

As with any project, it’s essential to research the materials and equipment beforehand. Compare prices between different suppliers to find the best deals for your DIY sauna kit or custom build.

Choose the Type of Sauna: Indoor or Outdoor DIY Sauna

Once you’ve selected the location and set a budget for your DIY sauna build, the next step is to decide on the type of sauna you want. There are several sauna designs to choose from, including traditional Finnish saunas, infrared saunas, and steam saunas.

Each type offers unique benefits and considerations, such as:

• Finnish Saunas: These traditional saunas use burning wood and a stove to generate heat. They typically don’t require electrical work or plumbing, making them ideal for an outdoor DIY sauna. The heat is naturally produced, offering a more ‘off-the-grid’ approach.
• Infrared Saunas: These saunas use panels to create heat instead of hot rocks or a stove. Infrared saunas require proper electrical wiring and may need extra insulation, depending on whether it’s an indoor sauna or outdoor.
• Steam Saunas: Steam saunas use a steam generator to produce heat. They will need additional plumbing to function properly and are ideal for those who enjoy high humidity levels in their sauna.

Finnish saunas are the easiest to build as a DIY home sauna, as they don’t rely heavily on electricity. However, even Finnish saunas may require some electrical work, especially if you’re installing a light source or a built-in thermostat.

For a more modern take on the traditional Finnish sauna, consider an electric heater. While this option requires wiring to power the heater, it can be safer and more convenient for an indoor sauna setup.

DIY Sauna Kits: An Easier Way to Build Your Sauna

When building a DIY home sauna, you have two main options: purchase a DIY sauna kit or construct the sauna from scratch. Each approach has its pros and cons depending on your budget, skills, and desired timeframe.

A DIY sauna kit typically comes with all the necessary materials, including pre-cut wood, insulation, heaters, and step-by-step instructions for easy assembly. These kits are ideal for those looking to build a sauna room quickly without needing extensive DIY knowledge. While sauna kits can be more expensive upfront than sourcing individual materials, they are often the fastest and easiest way to set up your home sauna.

If you have some DIY experience and are confident in your abilities, building the sauna from scratch can be a more budget-friendly option. This requires more time for research, planning, and material selection but offers greater flexibility in terms of sauna design and customization. By building your sauna yourself, you can save money and create a unique space tailored to your preferences.

Whether you opt for a DIY sauna kit or prefer to go the DIY route from scratch, both methods provide an excellent way to enjoy the benefits of a home sauna at your convenience.

Check Local Regulations

Before you begin your DIY home sauna project, it’s essential to research local regulations and permits that may apply to your area. Building a sauna can involve specific rules, especially if you plan to install it indoors or as part of a larger home sauna kit. These regulations can vary significantly based on your location, so it’s important to understand them before starting.

If you’re building a DIY sauna inside your home, you may not encounter many legal hurdles. However, some regions require that certain elements of the installation, like electrical work or plumbing, be completed by a licensed professional. This is particularly important if you’re planning to sell or rent out your property in the future, as meeting these requirements can prevent potential legal or safety issues.

Even if there are no strict regulations in your area, it’s always advisable to consult with a professional for any electrical or plumbing work. Doing so ensures that your sauna is installed safely, providing peace of mind and reducing the risk of issues down the line.

What You Need to Build a DIY Home Sauna

Once you have completed the planning and preparation phase, it’s time to delve into the design and construction of your DIY sauna. If you’re using a sauna kit, you don’t necessarily need to worry about the design as it will be included in the instructions – but you still have to construct it!

Here are some DIY sauna design and construction tips and tricks to keep in mind:

Materials for DIY Sauna Construction

Choosing the right materials is crucial when building a DIY sauna. High-quality materials ensure durability, safety, and an enjoyable experience. Every detail counts when creating your home sauna, so be mindful of selecting the best options.

Wall Construction

Wood is the most common material for sauna construction. It’s essential to choose wood that can handle high heat and moisture, such as cedar, pine, or hemlock. These woods are naturally resistant to mould and mildew, with cedar being the most popular choice due to its pleasant aroma. However, cedar can be expensive, so many DIY builders use cedar for the interior and other woods for exterior cladding.

Floor Materials

For the floor, select a material that’s both safe and comfortable. Options include non-slip tile, concrete, wood, or natural stone. These materials offer durability and comfort for your DIY home sauna.

Insulation

Proper insulation is key for maintaining a consistent temperature and reducing energy costs. Sauna insulation materials like fiberglass, specifically designed for saunas, are easy to install and help keep heat inside while providing soundproofing. Adding extra insulation between the walls and ceiling is essential to optimize energy efficiency.

Vapour Barrier

A vapour barrier is essential for protecting your walls from moisture. Use an aluminum foil barrier and staple it to the wall and ceiling before adding the wood lining. Sealing the seams with foil tape creates a watertight environment and prevents moisture from seeping into your sauna room.

Heating Element

The type of heating element depends on your sauna choice. Electric heaters, wood-burning stoves, infrared panels, or steam generators are common options. Always install the heater safely, ensuring a proper distance from windows and seating.

Ventilation

Proper ventilation is necessary for any home sauna. Install a vent above the heater for incoming air and an exhaust vent on the opposite wall, usually below the bench. For outdoor saunas, make sure the vents have protective covers to block out rain and snow. If you’re using a wood-burning heater, a chimney is required for smoke ventilation.

Door

A sauna door should be airtight to retain heat. Opt for a door with an insulating core or double-paned glass to improve insulation and energy efficiency.

Finishing Touches

You’re creating your own personal oasis, and adding some finishing touches will make it even more relaxing. You can add features like a separate shower or changing room, benches, or shelves to make your experience even more enjoyable.

If you have a wood-burning or electric sauna, consider adding an aesthetic water bucket and ladle for sprinkling the water over the hot stones.

Additional built-in thermostats and timers are available to help you manage the temperature and duration of your sauna sessions. Lighting can also be added to create the perfect atmosphere for relaxation.

Step-by-Step Guide to Building Your Own DIY Home Sauna

Building a sauna could be a great way to create something unique and enjoyable – if you’re comfortable with your ability to take on a DIY project. The steps that go into building a sauna can vary greatly depending on the type you want, but here are the basics of DIY sauna construction:

1. Choose the Right Location for Your Home Sauna

Whether you’re building an indoor sauna or a DIY outdoor sauna, selecting the right location is key. For an indoor sauna, start by clearing the space of any furniture or personal items. Strip the walls down to the studs and remove any carpet. It’s crucial to ensure the flooring is waterproof—if you have plywood flooring, seal it properly. Concrete or tile floors are ideal for maintaining durability and water resistance in your sauna room.

For a DIY outdoor sauna, make sure the ground is level, removing any grass or weeds from the site. You’ll need to mark out a foundation and pour concrete to create a flat and secure base for your sauna. Since the foundation will already be concrete, additional flooring materials like wood or tile can be added later to enhance the aesthetic and comfort.

If you’re unsure about creating a foundation, consult a professional to ensure it’s done correctly for a long-lasting sauna.

2. Install the Wiring and Plumbing

When building your home sauna, whether it’s an indoor sauna or a DIY outdoor sauna, the wiring and plumbing are crucial steps that require careful planning and professional expertise. If you’re installing an indoor sauna in an existing space, now is the time to wire the area for power and plumbing. Given the complexity of electrical and gas work, it’s recommended to hire a professional to ensure safety and proper installation.

Plan out where to place everything, including the electric heater (if you’re using one), lighting, light switches, thermostat, and any other electrical devices needed for your sauna experience.

If you’re opting for a gas heater, this is also when you’ll install the gas pipe. Ventilation ducts and fans will need to be placed within the walls, with proper wiring and pipes installed where required to keep your sauna room safe and functional.

For a DIY outdoor sauna, the process will vary slightly. You’ll begin by building a wooden frame for the walls and ceiling, followed by installing insulation (the next step). After the frame is in place, wire it for electricity to power your heater, lighting, and any other electrical equipment. Don’t forget to plan for ventilation systems, chimneys, and windows to ensure proper airflow and comfort.

3. Install Insulation and Framing

There are different widths of fiberglass insulation available in rolls. Choose the one best suited to your space, and apply it as tightly as possible to create an even layer of insulation on all walls and the ceiling. Cut out sections where necessary, such as around your lighting and power outlets.

4. Install the Vapour Barrier

After installing the insulation in your DIY sauna kit or home sauna, it’s time to add the vapor barrier. This step is essential for preventing moisture from seeping into the insulation, which can lead to water buildup or mold formation. A foil vapor barrier is highly recommended, as it is stronger than plastic and more effective at preventing moisture damage.

To install the barrier, staple it tightly against the studs, ensuring it is flush against the insulation. Overlap the seams by at least 3 inches, and use foil tape to seal the seams for a secure, airtight fit. Properly installing the vapor barrier is crucial for maintaining the integrity of your sauna room and ensuring long-lasting performance.

5. Attach the Paneling

When it comes to finishing your DIY sauna room, the next step is to attach the paneling. Start by securing the first panel to the ceiling. Always position the tongue of the board away from the wall, and then use the groove of the next board to “lock” them together. Secure each panel to the studs with a nail.

Continue this process for the walls and ceiling, ensuring that you cut out sections for your ventilation system, lighting, and other features. If you haven’t installed the sauna door yet, now is a good time to do so.

A key note: Never paint, varnish, or stain your sauna panels. The wood should remain natural to allow it to absorb and evenly distribute heat effectively.

6. Installing the Heater: Infrared or Traditional, and Other Features

Always follow the manufacturer’s guidance when installing your DIY sauna heater. There may be specific recommendations regarding clearance distances and installation locations—pay close attention to these details. Installing the heater might be as simple as washing the stones and plugging it in, but it’s crucial to check the manufacturer’s instructions first to ensure everything is properly set up.

Once the heater is in place, you can move on to installing other features, such as lighting, windows, and the thermostat. If you’re unsure about any wiring or plumbing installation, always seek professional advice to ensure your sauna installation is safe and up to code.

7. Adding Sauna Benches and Flooring

Now, it’s time to build the seating of your DIY home sauna! Depending on your skill level, the benches can be as simple or as complex as you like. Choose a smooth, knotless wood like clear cedar, and sand it down to provide a comfortable surface.

Attach the bench or benches directly onto your wall studs or onto brackets if you prefer removable sauna benches.

Your benches should be wide enough for a person to sit comfortably and high enough so that the user can stand without straining. If you’re creating an upper and lower bench, remember to stagger the bench widths. The lower bench should be wider than the upper.

Alternatively, you can create a “staircase effect” where the lower bench is thinner than the top—the choice is yours! Always use additional wood for support to ensure your benches are secure and won’t shift around during use.

8. Add the Final Touches and Test it Out

Now you can enjoy your complete DIY home sauna! Add a handrail, a small table, and towels if desired. Turn on your heater and use it as instructed to test it out. If everything is working correctly, you can start using your sauna!

Safety Considerations When Building a DIY Home Sauna

When building a DIY sauna, it is important to consider safety. Always follow the instructions of any electrical and plumbing equipment you use, and never try to repair the heater yourself. Ensure all your wiring and insulation are correctly installed, and always allow for adequate ventilation.

If you don’t have adequate training or experience in electrical or plumbing work, always contact a professional for advice. You want your new sauna to be a place of relaxation and safety – not danger!

Maintenance Tips for Your DIY Home Sauna

You don’t want your home sauna to lose its luster over time, so proper maintenance is key to preserving its quality and performance.

Here are some tips and tricks to keep your DIY sauna looking and feeling like new:

• Clean the walls and benches regularly using a damp bristle brush. Simply scrub the surfaces and use mild soap if necessary, but make sure to rinse thoroughly with clean water afterward.
• Vacuum any dust or debris that has collected on the surfaces or in corners, crevices, and under benches to keep your sauna in top shape.
• Always remove your shoes and clean your feet before entering the sauna to maintain cleanliness.
• If you use a wood-burning sauna stove, practice safe burning techniques and clean up ash or debris regularly.
• Inspect the electrical equipment periodically for frayed wires, burned insulators, and signs of wear and tear.
• After each session, air out your sauna by opening the door and vents to allow air to circulate, speeding up the drying process.

Conclusion: Build Your Perfect DIY Home Sauna Today!

Building a DIY sauna is a great way to relax and unwind in the comfort of your own home. It can provide a calming atmosphere and allow you to escape from everyday life. Building your own sauna at home is not overly difficult, but it does require a bit of skill and knowledge.

Be sure to follow all safety instructions and consult with professionals if unsure of any steps. With the right tools and materials, you can create a DIY sauna space that is perfect for relaxation and rejuvenation!