The material of sauna benches significantly affects the sauna experience, safety, and bench durability. The best materials for sauna benches are aspen and alder, both in natural and heat-treated forms. These wood species are pleasant against the skin, do not overheat, and withstand the demanding conditions of a sauna. When selecting material, it is worth considering wood quality, manufacturing method, and the style suitable for your own sauna.
What are the most popular wood species for sauna benches?
The most popular wood species for sauna benches are aspen, alder, and heat-treated radiata pine. Aspen and alder are particularly popular because they are knot-free and resin-free wood species that do not overheat even at high temperatures.
Aspen is an especially popular bench material due to its excellent properties. It is a light, pale, and smooth-surfaced wood that conducts heat poorly. This means that aspen benches feel pleasant against the skin even during intense steam sessions. Aspen also does not splinter easily, which increases comfort and safety.
Alder is another excellent choice for sauna benches. It is known for its beautiful reddish color, which brings a warm appearance to the sauna. Alder is also knot-free and resin-free, and it withstands moisture well, making it a durable choice for the humid conditions of a sauna.
Heat-treated radiata pine has gained popularity especially for its appearance. Its dark, warm tone brings a luxurious atmosphere to the sauna. Thanks to heat treatment, resin has been removed from it, making it a suitable material for sauna benches.
Why is heat-treated wood a good choice for sauna benches?
Heat-treated wood is an excellent choice for sauna benches because the treatment improves the wood’s moisture resistance, dimensional stability, and longevity. Heat treatment changes the wood’s structure in a way that makes it particularly well-suited to the demanding conditions of a sauna.
In the heat treatment process, the wood is first dried completely by rapidly raising its temperature to 100 degrees. When the lumber is completely dry, the wood’s temperature is slowly raised to 175-210 degrees for 1.5-3 days depending on the wood species, raw material thickness, and desired color shade. The treatment is regulated with steam and hot air.
During the process, water and resin are removed from the wood, and its structure changes chemically. At the same time, the wood is colored throughout with an elegant brown. Steam acts as protection by preventing the wood from cracking and igniting, and it also affects the chemical changes occurring in the wood.
The main benefits of heat treatment in sauna benches are:
- Better moisture resistance, which extends the lifespan of benches
- Reduced movement in moisture fluctuations, keeping bench structures more stable
- Pleasant, thoroughly colored dark shade that does not fade
- Completely non-toxic and ecological treatment method that uses only heat and steam
- Pleasant wood aroma
What is the difference between using aspen and alder in sauna benches?
There are differences between aspen and alder that affect their use in sauna benches. Aspen is lighter, less dense, and conducts heat slightly less than alder, making it particularly pleasant as a bench material against the skin.
Alder, on the other hand, is known for its beautiful reddish color, which brings a warm and traditional appearance to the sauna. Alder is also naturally somewhat more durable in humid conditions than aspen, making it a long-lasting choice.
Both wood species are knot-free and resin-free, which is a very important characteristic in bench wood. This means that neither overheats unpleasantly, nor do they leak resin due to heat. Both aspen and alder are also non-splintering, which increases comfort and safety.
In terms of color, aspen is light and neutral, which fits particularly well with modern and Scandinavian sauna styles. Alder’s warmer tone fits well in more traditional and rustic saunas.
When making a choice, consider:
- Aspen: Lighter, less dense, conducts very little heat, suits modern style
- Alder: Reddish, somewhat denser, naturally withstands moisture well, suits traditional style
What is the significance of bench wood quality and manufacturing method?
Bench wood quality and manufacturing method have a decisive impact on bench durability, comfort, and appearance. High-quality, carefully manufactured high-quality bench woods as sauna material can last for decades, while poor-quality ones may need replacement after just a few years.
Careful planing is one of the most important manufacturing stages. Precise and high-quality planing makes the surface of bench woods smooth and pleasant against the skin, which is essential for sauna comfort. A well-planed surface does not splinter easily and is safer to use.
Wood drying and treatment significantly affect bench wood quality. Properly dried wood does not warp or crack as easily in the sauna’s varying moisture conditions. This is particularly important because the sauna is a challenging environment: heat and humidity constantly fluctuate.
Precision is also essential in bench wood manufacturing. Bench woods manufactured to precise dimensions ensure that bench structures are sturdy and durable. Imprecise dimensions can lead to unstable construction, which is both uncomfortable and a safety risk.
Handcrafted quality inspection is an important part of the manufacturing process. A skilled inspector notices quality defects that might go unnoticed in mechanical inspection. This ensures that only the best bench woods reach the customer.
How to choose the right material for your specific sauna?
Choosing the right material for your sauna depends on several factors, such as sauna usage frequency, style, budget, and your personal preferences. By considering these factors, you can choose bench woods that serve your needs best and bring joy for years to come.
If you use the sauna regularly and frequently, it is worth investing in particularly high-quality and durable materials. Heat-treated aspen or alder are excellent choices for frequently used saunas, as they withstand moisture variation well and are long-lasting.
Sauna style and overall appearance also affect material choice. For a modern, light sauna, untreated aspen fits excellently due to its light and fresh appearance. For more traditional saunas, alder’s warm reddish tone or heat-treated wood’s stylish dark brown are good choices.
Budget is naturally one factor affecting the choice. Generally speaking, untreated wood is more affordable than heat-treated, but heat-treated wood is often more long-lasting. In the long term, heat-treated wood can be a cost-effective choice, even if the initial investment is larger.
Environmental considerations may also affect your decision. Responsibly produced domestic wood species are an ecological choice. Wood heat treatment is also a completely non-toxic process that uses only heat and steam.
Here are tips for different sauna types:
- Traditional Finnish sauna: Alder or heat-treated aspen
- Modern, light sauna: Untreated aspen
- Darker, luxurious sauna: Heat-treated wood, such as aspen, alder, or radiata pine
- Frequently used sauna: Heat-treated aspen or alder for durability
High-quality bench woods are a long-term investment that significantly improves the sauna experience. We at Pieksäwood specialize in high-quality sauna bench woods. We carefully manufacture our products from Finnish aspen and alder in Pieksämäki. Each bench wood is precisely planed and hand-inspected to ensure you receive a high-quality and durable product for your sauna. Check out completed sauna projects in our reference gallery to get ideas for your own sauna.