Best Wood for Sauna Selection Guide

Choosing the right building materials is crucial for saunas, as it ensures proper functionality and extends their lifespan. Next, we’ll discuss how to select the best wood for sauna and create your ideal sauna experience, focusing on indoor, outdoor, and far-infrared saunas.

Wood Selection for Indoor Sauna/Far-Infrared Sauna

Indoor saunas and far-infrared saunas have similar requirements for wood. Their core function is to heat the human body and promote sweating. Therefore, the wood used must have both good heat insulation and low thermal conductivity to avoid scalding users due to excessive temperature.
Secondly, in the high-temperature and high-humidity sauna environment, when choosing the best wood for saunas, the wood must not ooze resin or release harmful gases. After drying or fumigation treatment, the best wood for saunas can achieve this effect. For example, woods with natural low thermal conductivity and woody aroma, such as hemlock, Japanese cedar, and red cedar, are suitable, combining aesthetics and practicality.

Common Types of Wood Used in Indoor Saunas/Far-Infrared Saunas

Because natural solid wood undergoes drying before being processed into the best wood for saunas, the selection of wood for indoor saunas and far-infrared saunas doesn’t require as much consideration of external factors like harsh weather as for outdoor saunas. Nevertheless, choosing the best wood for sauna with stronger corrosion resistance and durability is still the preferred option for sauna materials, but ultimately it depends on the customer’s preferences and budget. Our Alphasauna commonly uses hemlock and Japanese cedar as wood for indoor saunas and far-infrared saunas.

1.Canadian Hemlock
Canadian hemlock is a popular choice for indoor saunas and far-infrared saunas due to its clear grain and natural color. It boasts excellent heat resistance, moisture resistance, and corrosion resistance. Furthermore, as a knot-free wood, it exhibits strong structural stability and is not easily deformed or cracked.
2.Japanese Cedar
Japanese cedar, also known as Cryptomeria japonica, is a commonly used wood in indoor saunas and far-infrared saunas due to its excellent performance and natural texture. It possesses a natural woody aroma and a soft color, with a long and wide grain. Compared to other woods, japanese cedar has low thermal conductivity, remaining mild and comfortable even in high-temperature environments. Its natural antibacterial and preservative properties also make it resistant to deformation and rot in the high-temperature and high-humidity environment of a sauna. Furthermore, Japanese cedar is a renewable resource with a short growth cycle, making it environmentally friendly and cost-effective.

Wood Selection for Outdoor Sauna Rooms

When choosing wood for an outdoor sauna, the selection process generally begins with considering its properties. The outdoor environment constantly affects the use of a sauna, including factors such as rain, snow, pests, and biological invasions, making the selection of suitable wood particularly important.

Common Types of Wood Used in Outdoor Saunas

Choosing high-quality sauna wood and maintaining it diligently will greatly extend the lifespan of your sauna. Our Alphasauna commonly uses Canadian red cedar, Thermo hemlock/Thermo pine, and other woods for our outdoor saunas.

1.Canadian Red Cedar
When it comes to materials for outdoor saunas, most people would choose Canadian red cedar. Its clear grain, natural antibacterial properties, strong moisture resistance, natural fragrance, and beautiful appearance make it widely popular and frequently used in sauna rooms, bathrooms, and other outdoor environments. However, its slow growth cycle results in a relatively high price; choose according to your own needs.

2.Thermo Hemlock/Thermo Pine
Both hemlock and pine possess excellent processing properties, adaptable to diverse design and processing methods.
Hemlock that has undergone heat treatment not only allows for surface finishes such as painting and sanding but also alters its properties through high-temperature treatment, releasing moisture and making the wood more structurally stable, significantly reducing the likelihood of decay. It also deepens the wood’s color.
Thermo pine effectively addresses its relatively low stability through heat treatment, resulting in a stronger structure, a deeper color, and a longer lifespan.

3.Pine
Pine wood is whitish in color and has a knotty grain. Due to its fast growth rate, relatively low price, and excellent processing properties, it is widely used in furniture, construction, decoration, and saunas. However, its stability is relatively low. Its resistance to high temperatures and moisture is not as good as woods like red cedar or hemlock, although it still performs well. When on a budget, pine remains the best wood for saunas, especially in environments with lower temperatures.

Comparison Table of Common Sauna Woods

Wood Maintenance Techniques

After selecting suitable sauna wood, cleaning and maintenance are also necessary. Regardless of the type of best wood for sauna, prolonged use will damage the internal structure of the wood, while timely cleaning and proper maintenance can extend the lifespan of the sauna.

Wood Surface Cleaning and Care Methods

Whether it’s an indoor sauna, an infrared sauna, or an outdoor sauna, after use, tidy up the sauna accessories. Use a vacuum cleaner to remove dust from the floor and wooden benches, then wipe the wooden benches and walls inside the sauna with clean water and a soft cloth, avoiding the use of chemical agents to corrode the wood. Timely cleaning helps to remove residual sweat stains and keep the sauna clean and tidy.

The Importance of Dryness and Ventilation

After cleaning the sauna, open the sauna door to allow air circulation inside, allowing the moisture and water stains to dry and preventing the wood from absorbing moisture and becoming moldy.

Prevent Mold and Aging

Regularly inspect the sauna room surface for cracks, and repair them promptly if found. It’s also necessary to apply wood wax oil to the exterior periodically to effectively prevent moisture from penetrating the wood, forming a protective layer that protects the wood and extends the sauna room’s lifespan. This also enhances the wood grain texture and color, and prevents mold and aging.

How to Choose the Right Sauna Wood According to Your Needs

Choose the best wood for sauna to customize your sauna room based on the area where you will use the sauna, your personal preferences, and your budget.

Recommended High-End Sauna Rooms

If you’re looking to purchase a fleet of high-end sauna rooms for your spa or campground, we highly recommend using red cedar, thermo wood, and hemlock—all three are considered the best woods for sauna construction. Thermo wood undergoes high-temperature processing, which enhances its properties and increases its price. Red cedar and hemlock, on the other hand, are favored by high-end sauna projects for their naturally superior properties and beautiful grain. However, due to limited market supply, environmental restrictions, and their growth cycles, these woods are rare and therefore particularly valuable, making them suitable for clients seeking high-quality products.

Mid-Range Value for Money Choice

Compared with high-end options like Canadian red cedar and Thermo wood, Japanese cedar offers a more affordable yet high-performing alternative. It is known for its stability, natural texture, and subtle aroma. For customers seeking comfort while balancing their budget, Japanese cedar is a cost-effective best wood for sauna choice — both beautiful and practical, ideal for home spas, private saunas, or vacation cabins.

Economic and Practical Solutions

For customers on a budget who prioritize functionality and comfort, pine is an economical and practical best wood for a sauna. It is lightweight, offers basic moisture resistance and durability, is easy to work with and install, and can be finished with natural wood wax oil to enhance its protective properties and showcase its natural grain.

Alphasauna Provides Customized Solutions for You

At Alphasauna, we offer a wide selection of the best wood for saunas to choose from, catering to your needs, whether you prioritize natural aroma, durability, or a balanced budget. We can tailor a custom sauna solution just for you. In addition, we provide matching sauna accessories, wooden sauna bucket sets, and more for sauna use. If you prefer hot or cold therapy, we can provide a one-stop solution for your wellness space planning.

FAQS

Question1：What Temperature Can Sauna Wood Withstand? Will It Warp at High Temperatures?

Answer:The wood commonly used in saunas can generally withstand temperatures of 100 to 120 degrees Celsius. Under normal use, it will not warp due to high temperatures. What truly affects the lifespan of a sauna is the circulation of humidity and temperature, as well as maintenance, such as poor ventilation over a long period and the use of untreated wood, which can cause the wood to crack or warp.

Question2:Is Our Wood Environmentally Friendly? Does It Release Harmful Gases?

Answer: The wood we use is all solid wood, and it has not been soaked or dyed in any chemicals, so it will not release harmful gases.

Question3:What Is the Difference Between Thermo Wood and Regular Solid Wood?

Answer: While ordinary sauna wood lasts approximately 10 to 20 years outdoors, the wood made by the heat treatment process can extend that to 20 to 30 years. It is a best wood for sauna treated by high-temperature carbonization technology of about 200 degrees. Because its nutrients are destroyed, it has better anti-corrosionand insect-proof functions.