Volcanic stones

Volcanic stones are a fundamental element in traditional sauna experiences, playing a crucial role in heat retention and steam generation. These stones are specifically chosen for their durability, heat conductivity, and ability to withstand repeated exposure to high temperatures without breaking down. Whether used in electric or wood-burning saunas, volcanic stones help create the iconic burst of steam known as “löyly” when water is poured over them. This article explores the characteristics, benefits, and proper use of volcanic stones in sauna settings.

What Are Volcanic Stones?

Volcanic stones are naturally formed igneous rocks created through volcanic activity. The most common types used in saunas include peridotite, basalt, and olivine diabase. These stones are valued for their porous structure, which allows them to absorb and radiate heat efficiently. Their ability to withstand extreme temperature fluctuations without cracking makes them ideal for the intense heating and cooling cycles within a sauna environment.

Why Volcanic Stones Are Used in Saunas

The use of volcanic stones in saunas provides several distinct advantages:

• High heat retention: Volcanic stones can absorb and store heat for long periods, helping maintain a consistent temperature.
• Durability: They resist cracking and breaking, even with repeated water application and intense heat.
• Efficient steam production: Their porous nature helps generate rich, even steam when water is applied.
• Natural mineral composition: These stones are free from harmful chemicals and are safe to use in enclosed, heated spaces.

These qualities make volcanic stones a superior choice for anyone seeking an authentic, long-lasting sauna experience.

How to Use Volcanic Stones in a Sauna

For optimal performance, follow these guidelines when using volcanic stones in your sauna:

• Rinse stones before first use to remove any dust or debris.
• Stack them loosely around and above the heating elements to allow proper airflow and even heat distribution.
• Use stones of varying sizes to fill gaps and enhance thermal efficiency.
• Replace stones every 1–2 years or when they show signs of cracking, chipping, or mineral buildup.

Proper arrangement and regular maintenance ensure efficient heat circulation and extend the life of both the stones and the sauna heater.

Choosing the Right Volcanic Stones

When selecting volcanic stones for your sauna, consider the following factors:

• Size: Medium-sized stones (5–10 cm) offer the best balance between heat storage and airflow.
• Shape: Irregular stones with rough surfaces retain heat better and create more steam.
• Origin: Purchase from reputable suppliers to ensure the stones are natural and untreated.

Quality stones will improve your sauna’s efficiency and help create a richer, more relaxing steam experience.

Safety and Maintenance Tips

Even though volcanic stones are highly durable, routine care is essential:

• Inspect stones regularly for cracks or disintegration.
• Clean buildup of minerals from frequent water exposure using a soft brush or by soaking in vinegar.
• Do not overload the heater with too many stones, as it can restrict airflow and damage the heating elements.

Adhering to these practices helps preserve both the safety and effectiveness of your sauna sessions.

Conclusion

Volcanic stones are a vital part of traditional sauna design, contributing to both the ambiance and functionality of the sauna experience. Their unique properties—such as excellent heat retention and durability—make them ideal for producing consistent warmth and soothing steam. With proper selection, use, and maintenance, volcanic stones can elevate your sauna sessions and ensure a relaxing, health-promoting environment for years to come.