Allow the sauna to dry completely after each use. Wipe away excess moisture, leave the door open, and maintain airflow through the cabin to help prevent trapped moisture, odors, and mildew.
Clean the benches, floor, and interior wood with a soft cloth or brush and a mild soap-and-water solution. Avoid bleach, harsh chemicals, abrasive cleaners, and pressure washing, as these may damage or discolor the cedar.
Natural red cedar will gradually weather and change color when exposed to sunlight and moisture. To help preserve its appearance, apply a breathable exterior wood protectant suitable for cedar. Do not paint, stain, varnish, or seal the interior surfaces unless the product is specifically approved for sauna interiors.
Inspect the asphalt shingles, glass, fasteners, wood panels, and foundation periodically. Keep the area around the sauna clear and make sure water drains away from the base.
Allow the heater and sauna stones to cool completely before inspection. Periodically check the stones for cracks or deterioration and rearrange or replace them when necessary to maintain proper airflow through the heater. Electrical repairs should only be performed by a qualified professional.