Our saunas are made with naturally weather-resistant woods like Canadian red cedar and thermowood. Over time, the wood may weather and change in appearance. To maintain its original tone and extend its life, you may apply a UV-protective stain and seal every 5–7 years. Look for a product with mildew resistance—brands like Behr are commonly used.

We recommend treating benches and floors with Harvia paraffin oil once or twice a year. It helps reduce absorption of sweat and moisture, especially in thermowood saunas. Clean surfaces every 3–4 months using Harvia Sauna Cleanser or a gentle wood-safe solution. Avoid ammonia-based products.

Use a sponge or soft brush and scrub with the grain. Rinse thoroughly and run the heater for 1–2 hours to fully dry. For limescale on heaters, use Harvia's heater cleanser designed for stainless steel.

Re-stack your sauna stones every 6 months to prevent the heating coils from shifting or touching. Replace the rocks every 12–18 months, or sooner if they begin to crumble or produce excessive dust.

Yes. Barrel saunas are not fully watertight. Installing asphalt shingles or cedar roofing helps prevent leaks and protects the wood. After rainfall, run your heater for 1 hour to dry the space and prevent moisture buildup.

Use a garden hose or low-pressure washer to remove dirt and debris. Avoid harsh chemicals.

Run the heater for an additional 60 minutes after each session to dry the wood. For infrequent use, run a dehumidifier or fan, and place desiccants inside (like Damp-Rid or charcoal).

To treat visible mold, clean early. Spray the area with white vinegar, scrub with soap and water, and rinse. For tough spots, use 30 Seconds Outdoor Cleaner or Behr All-in-One Wood Cleaner. Run the heater to dry the space after cleaning. Always wear protective gear when handling mold.