Which wood for the sauna? A guide to the best types of wood and their properties
Building a sauna is an investment in relaxation and health, so choosing the right wood for the sauna is crucial. The quality, durability and aesthetics of the material determine the comfort and safety of use. In this article, we will cover all aspects of choosing the best wood for building a sauna.
What qualities should you look for in sauna wood?
Building a sauna is not only a question of aesthetics, it is above all a question of functionality. The wood you choose must be able to cope with the specific conditions that prevail inside – high temperatures, high humidity and regular use. Here are the most important features that sauna wood should have:
1. Moisture and temperature resistance
The wood used in the sauna should be stable and resistant to extreme conditions, including varying humidity and high temperatures, which can reach up to 100°C in a dry Finnish sauna. The material must retain its properties without cracking, warping or delaminating. Moisture resistance protects against water penetration, which prevents the growth of mould and other micro-organisms, and minimises the risk of deformation.
2. No resin or knots
The wood dedicated for the sauna should be free of resin and knots. Resin, when exposed to high temperatures, can melt and leak, leading to the risk of burns and damage to the structure of the wood. Knots, on the other hand, can heat up more than the rest of the surface, causing discomfort during use.
3. Low thermal conductivity
Wood should have low thermal conductivity. This means that the material does not heat up excessively, thus avoiding burns when the skin comes into contact with the surface of the benches or walls. This allows you to lean or sit comfortably directly on the wooden surfaces, even when the temperature in the cabin is high.
4. Antibacterial properties
The wood for saunas should have natural antibacterial and antifungal properties. Heat and humidity are ideal conditions for the growth of micro-organisms, so properly selected wood reduces this problem. Species such as cedar or Scandinavian spruce have natural essential oils that have an antibacterial effect and increase sauna hygiene.
The best types of wood for sauna
Choosing the best wood for your sauna is a key step that affects the durability, comfort and aesthetics of the entire structure. Below are the most frequently selected wood species, valued both for their exceptional technical properties and visual appeal.
1. Nordic Spruce
A light-coloured, subtly grained, high-density wood that is ideal for both indoor and outdoor saunas. Its resistance to moisture and stability in changing conditions makes it an ideal choice for long-term use.
2. Western Red Cedar
A wood with a distinctive reddish-brown hue, emitting a natural, soothing aroma. Its resistance to fungi, mould and moisture makes it an excellent material for structural and decorative elements in the sauna.
3. Lime
A soft, easy to work light-coloured wood that remains cool to the touch even in high temperatures. Ideal for benches and other surfaces with which our skin comes into direct contact.
4. Aspen
A resin-free wood with a smooth texture and delicate colouring that does not form splinters. This makes it ideal for the interior of the sauna for comfort and safety.
5. Canadian fir (Hemlock)
A durable, resin-free wood with an even grain. Its ability to distribute heat evenly makes it an excellent choice for walls and ceilings, providing a comfortable microclimate.
6. Poplar
An affordable alternative to more expensive species, with a subtle grain and delicate colour. Thanks to its good thermal properties, it works well in less demanding elements of sauna construction.
Why is Scandinavian spruce the best choice?
At BHB, we use Scandinavian spruce – a material that is ideally suited to the construction of indoor and garden saunas. Originating from the harsh northern forests of Scandinavia, it is distinguished by its exceptional quality and unique properties that make it one of the best woods available on the market.
Unique properties of Scandinavian spruce:
- Stability and durability: thanks to its low moisture content and fine-grained structure, spruce wood retains its shape even under extreme conditions. This guarantees durability and resistance to deformation in both high temperatures and high humidity.
- Natural aroma: Scandinavian spruce fills the sauna with a delicate, natural aroma that further emphasises the relaxing nature of sauna sessions.
- Eco-friendly and aesthetically pleasing: the wood we use is certified and responsibly sourced. The light colour and subtle structure give each sauna an elegant, timeless look.
At BHB, we create both indoor and garden saunas that combine functionality with aesthetics. Spruce wood, thanks to its resistance to changing weather conditions, is ideal for outdoor structures such as modern garden saunas with additional utility rooms or traditional wooden sauna huts.
Advantages of our saunas:
- Attention to detail: every sauna that leaves our production is carefully designed, and precise workmanship ensures comfortable use for many years.
- Modernity of the solution: we offer optional extras, such as spacious changing rooms or a shower area, which increase functionality and comfort.
- Comfort and safety: the wood of Scandinavian spruce guarantees pleasant warmth that does not burn on contact with the skin, and the antibacterial properties ensure hygiene and durability of the construction.
The most popular wood for the sauna
Choosing the right wood determines how our sauna will look and how durable it will be. Each of the popular species has its own unique characteristics that make it ideal for use in specific conditions.
- Scandinavian Spruce (Nordic Spruce) – is a highly durable and weather-resistant material, making it an ideal choice for both indoor and outdoor saunas.
- Red Cedar (Western Red Cedar) – impresses with its rich colour and durability, as well as its natural resistance to moisture, fungi and mould. The delicate aroma of cedar enriches the sauna experience.
- Lime – is a low thermal conductivity wood that remains cool to the touch even at high temperatures, increasing the comfort of the sauna.
Wood species that are not suitable for sauna construction
Not every wood will work well in the demanding conditions of a sauna, even if it is popular in other applications.Unlike the species described in the previous paragraph, the following materials do not meet the criteria for durability, safety and comfort.
- Pine – contains resin that leaks at high temperatures, causing a risk of burns.
- Oak – heavy and expensive wood that is prone to warping in humid environments.
- Beech – although durable, it is not resistant to moisture and fungi.
- Exotic woods (e.g. teak) – can give off toxic fumes at high temperatures.
How do I look after the wood in my sauna?
Proper care of the wood is the key to maintaining its durability, functionality and aesthetics for many years. The high temperatures and humidity in the sauna can adversely affect the structure of the wood if it is not properly protected.
1. Regular surface cleaning
Ensure that dirt and perspiration are thoroughly removed after each sauna session so that the wood retains its natural structure and appearance.
2. Avoid aggressive detergents that can damage the structure of the wood
Choose mild cleaners or pure water to protect the delicate properties of the wood from chemical damage.
3. Keep the sauna well ventilated after each use to prevent mould
Leave the door open for a few hours after using the sauna to allow the wood to dry more quickly.
4. Apply a special impregnating product once a year to protect the wood from moisture
Use preparations dedicated to sauna wood to prolong its durability and resistance to moisture and heat.
Summary
Choosing the right wood to build your sauna is essential for durability, aesthetics and safety. By choosing the wood offered by our company BHB, you are investing in quality and comfort that will accompany you for years to come. With carefully selected materials, we guarantee the reliability and unique character of each sauna.
FAQ section
1. What is the best wood for sauna construction?
Scandinavian spruce is the most recommended wood species.
2. Can pine be used in a sauna?
It is not recommended as it contains resin that leaks at high temperatures.
3. Does the wood in the sauna need to be impregnated?
Not necessary, but regular impregnation can increase the durability of the wood.
4. Does the wood in the sauna get hot?
Soft woods, such as cedar or lime, heat up more slowly to ensure comfort.
5. What type of wood should I choose for the sauna benches?
Wood species that remain cool to the touch, such as lime, aspen or red cedar, work best as they provide comfort and safety for use.
