Sauna Maintenance Tips: How to Keep Your Sauna Like New

A sauna is a long-term investment, and a little regular care keeps it hygienic, efficient and beautiful for years. The good news is that maintenance is simple and fast when you stay on top of it. From wiping down benches to caring for the rocks and managing moisture, these habits will keep your sauna feeling — and smelling — like new.

Clean the Benches After Every Session

The single most important habit is also the easiest. After each session, wipe down the benches and backrests with a damp cloth to remove sweat, which is the main cause of stains and odors over time. Always sit on a towel during your sessions to minimize sweat contact in the first place. This one-minute habit prevents nearly every long-term cosmetic problem a wood sauna can develop, whether you own a compact SaunaLife E6 barrel or a larger cabin.

Deep Clean Monthly (and Do It Gently)

Every few weeks, give the interior a more thorough cleaning. Use warm water and a soft-bristle brush, working with the grain of the wood. For stubborn stains, a mild solution of water and baking soda works well. Never use harsh chemical cleaners, bleach or pressure washers — they can damage the wood, leave residues that off-gas when heated, and strip the natural character of cedar or thermo-treated spruce. Sand out any deep marks lightly with fine-grit paper.

Manage Moisture and Airflow

Moisture is wood's natural enemy over the long run. After each session, leave the sauna door open and, if you have one, run the vent so the room dries fully. A dry sauna is a hygienic sauna — lingering dampness is what invites mildew and that musty smell. Outdoor barrel saunas like the SaunaLife E8 shed rain on the outside, but the inside still needs to breathe after use.

Care for the Heater and Rocks

Sauna rocks don't last forever. Over months of heating and cooling they crack and crumble, which restricts airflow and hurts heat output. Once or twice a year, remove the rocks, discard any that are broken, rinse the good ones, and re-stack them loosely so air and steam can circulate. If you're re-stocking, replacement stones and heaters are available in our sauna heater collection. Inspect the heater's elements and housing for corrosion at the same time.

Protect the Exterior of an Outdoor Sauna

Outdoor saunas take weather year-round. Check the roof, bands and cradles seasonally, clear leaves and debris off the top, and keep the base pad well-drained. Thermo-treated woods and cedar are naturally rot-resistant, but a UV-protective exterior treatment (never on the interior) helps a barrel like the SaunaLife EE8G or a Dundalk Harmony keep its color for years.

A Simple Maintenance Schedule

• After every use: wipe benches, prop the door open to dry.
• Monthly: gentle deep clean of benches, floor and walls with water and a soft brush.
• Twice a year: inspect and re-stack heater rocks, check the heater and vents.
• Seasonally (outdoor): inspect roof, bands, cradles and base; clear debris; refresh exterior UV treatment.

Stay on top of this rhythm and a quality sauna stays hygienic, efficient and beautiful for decades.

Treating Wood the Right Way

A common mistake is sealing or varnishing the inside of a sauna. Never do it — coatings trap moisture, off-gas when heated and get uncomfortably hot to the touch. Sauna interiors are meant to be bare wood, which naturally handles heat and humidity when allowed to breathe. The only surface product worth considering inside is a dedicated sauna wood oil made for benches, applied sparingly. On the outside of an outdoor model, a UV-protective wood finish is fine and even recommended to preserve color. Aromatic species such as the Western Red Cedar of the Dundalk Serenity age gracefully with almost no intervention.

Little Habits That Add Years

• Always use a towel on the benches — it is the single biggest factor in keeping wood clean.
• Keep the floor dry. Squeegee or towel any standing water after a steamy session.
• Air it out. Ten minutes of open-door drying prevents most odor and mildew problems.
• Check fasteners and hinges on the door once or twice a year, especially on outdoor barrels like the SaunaLife E7.
• Watch the electrics. If a heater trips or heats unevenly, stop using it and consult a professional.

None of this is time-consuming. A few minutes after each session and a short seasonal check are all it takes to keep a well-built sauna performing like the day it was installed.

Frequently Asked Questions

This guide is provided for general wellness information by Sauna Company USA and is not medical advice. Consult a physician before beginning heat or cold therapy, especially if you are pregnant or have a heart condition. Confirm electrical requirements with a licensed electrician and follow the manufacturer's instructions.