Sauna care guide

How to Care for Your Sauna

A good sauna does not need complicated maintenance, but it does need a few simple habits. Keep it dry, clean, ventilated and protected, and it will look better and last longer.

This guide covers the basics for looking after a home sauna in Australia, especially outdoor saunas exposed to sun, rain, humidity, pool areas and coastal air.

Swell Black Eco 4 outdoor sauna beside swimming pool on landscaped backyard patio

Keep it dry

Air the sauna out after use so moisture does not sit inside the room or around the benches.

Clean lightly

Use a damp cloth and mild cleaner when needed. Avoid harsh chemicals on timber surfaces.

Check the exterior

Outdoor saunas need occasional checks on seals, fixings, roof, drainage and exterior finish.

After each sauna session

Leave the door open for a while after use so the room can dry properly. If your sauna has vents, keep them open once the session is finished. This helps heat and moisture escape rather than sitting inside the timber.

Wipe down benches if they are wet, remove towels and keep the floor clear. These small habits do most of the work.

Front view of Swell Black Eco 4 outdoor traditional sauna beside backyard pool

Bench and interior care

Sauna timber is designed to be used hot, but it still benefits from simple care. Sit on a towel where possible, wipe marks early, and avoid bringing oils, drinks, shoes or dirty gear onto the benches.

For normal cleaning, use a soft cloth with warm water. If needed, use a mild timber-safe cleaner and avoid anything heavily perfumed, abrasive or bleach-based.

The interior should stay natural and breathable. Do not paint or varnish internal sauna benches unless the product is specifically made for sauna temperatures.

Heater and stones

Keep the heater area clear and follow the heater manual for safe use. Do not cover the heater, dry towels over it, or place anything flammable nearby.

Sauna stones should be checked every so often. Over time they can crack, settle or restrict airflow through the heater. If stones are crumbling or packed too tightly, replace or restack them according to the heater instructions.

Simple rule: a sauna should feel clean and dry between sessions. If it smells damp, looks marked, or holds moisture, it needs more ventilation and a light clean.

Swell Black Eco 4 outdoor sauna beside pool and stone wall in luxury backyard

Outdoor sauna care

An outdoor sauna needs the same basic care as any quality outdoor structure. Keep leaves and debris off the roof, make sure water drains away from the base, and avoid letting sprinklers or pool splash hit the sauna constantly.

Check the exterior finish from time to time. Australian sun, rain and coastal air can weather timber and external surfaces, so maintenance is normal. A light clean and timely exterior treatment is much easier than letting the finish break down.

Glass, seals and hardware

Clean glass with a normal glass cleaner or soft cloth. Around coastal homes or pool areas, rinse and wipe exposed hardware when salt or chemicals build up.

Check hinges, handles, seals and fixings every so often. If anything feels loose, stiff or worn, sort it early. Small fixes are much easier before they become bigger issues.

What not to do

Avoid pressure washing the sauna, soaking timber surfaces, using harsh chemicals, blocking ventilation, or letting water sit around the base.

Do not treat the sauna like a sealed plastic room. Good sauna care is about letting the timber breathe, dry and stay clean.

Swell Black Eco 4 four-person outdoor traditional sauna with glass front and cedar interior

Quick sauna care checklist

Open the door and vents after each session.
Use towels on benches where possible.
Wipe down wet benches, glass or floor areas.
Keep the heater clear and check stones occasionally.
Keep leaves, dirt and water away from the exterior base.
Check seals, hinges, handles and roof details every so often.
Maintain the exterior finish before it becomes heavily weathered.

How often should you clean a sauna?

For regular home use, a light wipe after sessions and a deeper clean every few weeks is usually enough. If the sauna is used heavily, sits near a pool, or is close to the ocean, check it more often.

The main thing is consistency. A few small habits keep the sauna feeling fresh and make long-term maintenance much easier.