How to Build Sauna Benches

Have you ever wanted to build your sauna, or simply update the benches in an existing one? Making your custom-built sauna benches is quite simple and can be done using just a few basic tools.

How to Build Sauna Benches

In this blog post, we’ll show you how to build sauna benches! With these helpful tips and instructions, you’ll soon have comfortable benches perfect for creating a relaxing spa experience within your home.

Tools and Materials You Will Need to Build Sauna Benches

  1. Circular saw
  2. Sandpaper
  3. Miter saw
  4. Drill
  5. Wood screws (2 1/2-3 inches long)
  6. Plywood/MDF boards (1 inch thick)
  7. Screwdriver or screw gun
  8. Sauna bench legs (sturdy and strong, made of wood or metal)
  9. Wood glue
  10. Finishing nails (1 1/2-2 inches long)
  11. Wood stain
  12. Paintbrush

Step-by-step guidelines on how to build sauna benches

Step 1: Measure and Cut the Plywood/MDF Boards to Size

Before beginning construction, you will need to measure the size of your sauna bench. For this step, it’s a good idea to consider how many people will be sitting on the bench at once and factor in any additional space needed for comfort.

Once you’ve determined the size of your bench, use a circular saw to cut the plywood/MDF boards to fit.

Use a Circular Saw to Cut the Plywood

Step 2: Attach Legs to Boards Using Wood Screws

Now that you’ve cut the boards, it’s time to attach them to the sauna bench legs. Begin by positioning the legs in place. Make sure they’re even and level on both sides before screwing them in.

Use a drill and wood screws to attach the legs securely to the boards, using two screws for each leg.

Step 3: Secure Bench Boards Together with Wood Glue and Finishing Nails

Once you have secured the legs to the boards, use wood glue and finishing nails to attach the two bench boards. Start by applying a generous amount of wood glue along the edges of both boards.

Position the boards on top of each other and line up any corners that may be misaligned. Secure them with a few finishing nails for extra stability.

Step 4: Sand Down the Bench and Apply Wood Stain

Using sandpaper, lightly sand down the entire bench to remove any rough edges. Once you are finished, apply a wood stain or sealer of your choice for protection. Let the stain dry before moving on to the next step. Sanding and staining the bench will add a nice finish and make it look more polished.

Step 5: Paint Your Bench

For an extra special touch, you can paint your sauna bench for a more personalized look. Using a small brush, apply two coats of paint in the color of your choice. Let the coat dry completely before using the bench. You can even add a stenciled design or pattern for a unique look.

Apply a Wood Stain or Sealer

And there you have it! With these tips, your sauna bench is now ready to be used and enjoyed. Whether you’re building from scratch, or updating an existing one, these steps will help you create a beautiful and comfortable sauna experience. Enjoy!

Additional Tips and Tricks to Build Sauna Benches

1. Use a high-quality sauna wood such as Western Red Cedar or Aspen. These materials provide superior insulation, durability, and appearance that will last for years.

2. Measure twice, cut once! Make sure all measurements are exact before cutting any wood to prevent wasted material and time.

3. Consider using tongue and groove planks to achieve a smoother, more finished look. This will ensure the bench top is a consistent height and aesthetically pleasing.

4. Fasten all pieces of wood together with stainless steel screws or nails to ensure durability and longevity.

5. If possible, use pre-made corner brackets for added support and stability when connecting the seat sections of the sauna bench.

6. If desired, you can use a sealant to waterproof the wood and protect it from moisture damage.

7. Consider outfitting your bench with a seat cushion for added comfort and style.

8. When not in use, make sure to store the sauna benches away from direct sunlight and humidity, which can cause warping and damage.

9. Regularly check the benches for signs of wear and tear, such as splitting or cracking wood. Make any necessary repairs quickly to maintain the benches in optimal condition.

Use a High-quality Sauna Wood

By following these tips and tricks, you can easily build a sturdy and attractive sauna bench that will last you many years of enjoyment! Good luck with your project!

Things You Should Consider to Build Sauna Benches

1. Choose the right type of wood for your sauna benches. Cedar is a great choice because it has natural oils that are good for both indoor and outdoor use, plus it’s very durable. Pine is also a popular choice and can be stained or painted to fit any style you choose.

2. Consider if you want to add any extra features to your sauna benches. This could include lighting, built-in shelves or cup holders, extra leg support, and even heating elements.

3. Choose the right size for your benches. Try to have enough room for at least two people to comfortably sit on the bench without having their legs overlap each other’s space.

4. Be sure to seal and protect the wood with a waterproof sealant. This will help keep your benches looking beautiful and new for years to come.

5. Don’t forget to think about how you’re going to fasten the benches together. You’ll need either screws, bolts, or nails depending on the size of your bench and how much weight it can hold. This is an important step in the building process.

6. Make sure you measure and cut your wood pieces accurately. Measure twice, cut once! This will help ensure that your benches are strong and stable when finished.

7. Lastly, if you’re not confident with your carpentry skills, consider seeking professional help or consulting a sauna bench-building guide to make sure you’re getting the best results.

Cut Your Wood Pieces Accurately

By following these considerations, you’ll be on your way to creating beautiful and comfortable sauna benches that will last for years! Happy building!

Precautions Need to Follow for Building Sauna Benches

1. Make sure to use screws and nails when building sauna benches. Avoid using staples, which can loosen over time.

2. To ensure maximum strength and stability, make sure to secure each piece of wood firmly to the support beams for the bench before moving on to the next one.

3. When assembling a sauna bench, start from the bottom and work your way up.

4. Use a level to ensure that each layer of lumber is the same height and level as the one below it.

5. When attaching two pieces of wood, be sure that the ends are flush even before securing them together with screws or nails.

6. Check regularly for any signs of wear and tear, such as cracked or split wood. If you notice any damage, replace the affected piece immediately.

7. Make sure that all screws and nails are tightened securely to prevent any wobbling of the bench when it is being used.

8. Finally, use a sealant to protect your sauna bench from moisture and humidity. This will ensure that the bench can withstand the high temperatures of a sauna.

Following these precautions will ensure that your sauna bench is built safely and securely, and will last for years to come. With proper care and maintenance, your sauna bench can provide you with hours of relaxation in an invigorating environment.

Cracked or Split Wood

Common Mistakes in Building Sauna Benches

1. Not measuring the space. Before cutting any wood for your sauna benches, you should always measure the space to make sure that all of the bench pieces will fit correctly and be able to support the weight of those who are sitting on them. It’s also important to consider how much space you want between each bench so it’s comfortable for users.

2. Not using stable wood. Stable woods such as cedar, birch, and basswood are ideal for sauna benches as they can handle the extreme temperatures of the steam-filled room without warping or cracking. You should also avoid choosing any boards that have knots, splits, or cracks in them, as these may not be strong enough to support people’s weight.

3. Not pre-drilling pilot holes. Pre-drilling pilot holes for the screws is important to avoid splitting the wood when you put them together. You should also use stainless steel screws, as these will last longer and are less likely to corrode from the heat of the sauna room.

4. Not sanding the wood properly. Sanding the wood before assembly is essential to ensure that all of the pieces fit together correctly and there are no sharp edges that could injure someone when they’re using the sauna benches.

5. Not staining or sealing the wood. Finishing your sauna bench with a sealer or stain will help protect the wood from moisture and make it last longer. This will also help to prevent mold and mildew from developing in your sauna room over time.

By avoiding these mistakes, you can ensure that your sauna benches are safe and long-lasting. With careful planning and craftsmanship, you’ll be able to enjoy your steamy retreat for years to come.

Frequently Asked Questions

What Type of Wood Should I Use for Building Sauna Benches? 

The best option for building sauna benches is to use lumber such as cedar, spruce, pine, and hemlock. These types of woods are naturally resistant to moisture and able to withstand high temperatures without warping or cracking. Additionally, they offer a pleasant, aromatic scent that many enjoy.

What Tools Do I Need to Build Sauna Benches?

You will need the following tools to build sauna benches: a saw, drill (with a countersink bit), sandpaper, clamps, and wood glue. Additionally, if you are looking to get an even finish on your benches it is recommended to have access to a wood planer or sander.

Do I Need Any Special Skills?

Having basic carpentry skills is helpful when building sauna benches, however, it is not necessary. If you are looking for help with the construction of your benches there are many tutorials and videos available online to guide you through the process.

Additionally, if you have never worked with wood before it is best to start with a less complicated project such as constructing planter boxes or shelves.

Are There Any Tips and Tricks for Building Sauna Benches?

When building sauna benches, be sure to take your time and measure twice! Accurate measurements are key when working with wood, so remember to double-check before you start cutting.

Seating Cushions and Covers Are Important

Additionally, it is important to make sure that your benches are securely connected. This can be done by using clamps to hold the pieces together as you work and then applying wood glue for extra reinforcement.

What Types of Seating Cushions and Covers Should I Consider?

Seating cushions and covers are important aspects to consider when building sauna benches. For a traditional look, you may want to consider wool blankets or sheepskin rugs for your cushions.

If you prefer more modern styling, you can get creative with different fabrics and colors. In addition to the aesthetics, make sure that the materials you choose can stand up to high temperatures and moisture.


All in all, knowing how to build sauna benches can be a rewarding and beneficial experience. With the right materials, tools, knowledge, and a bit of patience your sauna will look beautiful and be ready for use in no time!

It is important to ensure that your benches are securely attached with wood glue and clamps so that they can withstand high temperatures and moisture levels.

Additionally, selecting the right seating cushions and covers can help complete the look of your sauna and make it more comfortable to use. With these tips and tricks in mind, you will be able to confidently build sauna benches that will last for years to come.

Photo of author

Adrian Green

Adrian is a woodworking hobbyist and has loved Woodworking since he was 10 years old. Back then in childhood, his father used to have a furniture shop. He used to help his dad and learned a lot from him about how to fix woodworking furniture, basic carpentry knowledge and also about how to work hard and take care of business. He enjoys woodworking as a hobby. He loves the feeling of creating something with his own hands, and the satisfaction that comes from seeing his finished products used by others.

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