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Outdoor infrared sauna in an Australian backyard wellness setting
Owners Guide

How to Care for Your Outdoor Infrared Sauna

A practical guide to cleaning, timber care, ventilation, moisture prevention and keeping your outdoor sauna in great condition year-round.

Published by Torquay Saunas · 30 August 2026 · 12 min read

An outdoor infrared sauna is exposed to a very different environment from an indoor sauna.

Sun, rain, wind, changing temperatures, moisture and — in coastal areas such as Torquay, the Surf Coast and Bellarine — salt-laden air all make regular care important.

Fortunately, maintaining an outdoor infrared sauna doesn't need to be difficult.

A few simple habits after each session, combined with periodic cleaning and exterior timber care, can help keep your sauna looking great and operating as intended for years to come. This guide explains the key things every outdoor infrared sauna owner should know.

The golden rule

Keep it clean

Keep it dry

Let it breathe

1. The Golden Rule: Keep Your Sauna Dry

Moisture is one of the biggest things to manage in any outdoor timber sauna. Perspiration, damp towels, wet feet and moisture brought into the cabin can create a warm, damp environment. Over time, excessive moisture combined with inadequate airflow can contribute to musty odours, mould and deterioration of timber.

After using your sauna:

  • Remove damp towels and clothing
  • Wipe away visible perspiration or moisture
  • Make sure the floor is reasonably dry
  • Allow the cabin to ventilate
  • Never leave wet items sitting inside the sauna

These small habits make a significant difference over the life of an outdoor sauna.

2. Always Use a Towel

One of the easiest ways to keep the interior timber looking good is to place a towel between your skin and the timber. Sit or lie on a clean towel during each session. This helps prevent perspiration and natural skin oils from soaking directly into the bench, and makes routine cleaning considerably easier.

If your back regularly contacts a timber backrest, consider using a towel there as well.

After your session, take the towels with you. Do not leave damp towels inside the sauna.

3. Ventilate Your Sauna After Use

Good airflow is extremely important. After finishing your sauna session and allowing the unit to complete any manufacturer-recommended post-use operating procedure, open the door and allow fresh air to circulate through the cabin. The objective is to remove warm, damp air and allow the interior timber to dry thoroughly.

As a general ownership habit:

Use → Dry → Ventilate

Never close a visibly damp sauna for an extended period. In suitable weather, periodically leaving the door open for a longer ventilation period can also help keep the cabin fresh.

Always consider weather conditions before leaving an outdoor sauna open.

4. Cleaning the Inside of Your Infrared Sauna

For regular cleaning, keep things simple. A clean, lightly damp cloth will be sufficient for much of the routine cleaning required inside the sauna.

Pay particular attention to:

  • Bench seats and backrests
  • Floor
  • Areas underneath benches
  • High-contact timber surfaces

Avoid saturating the timber with water. After cleaning: wipe away excess moisture, dry surfaces with a clean towel, then ventilate the sauna thoroughly.

Do not use harsh household cleaners on the internal timber unless specifically approved by the sauna manufacturer. Strong chemicals can damage or discolour natural timber.

Important

Never paint, varnish or oil the interior timber. The interior should remain untreated unless Torquay Saunas or the manufacturer specifically instructs otherwise for your particular model.

5. Be Careful Around the Infrared Heaters

Infrared heating panels should be treated carefully. Avoid pressing, leaning heavily against or unnecessarily touching infrared heater surfaces. When cleaning around heaters, follow the instructions for your particular sauna model.

Never

Pour or spray water onto infrared heaters, electrical components, control panels, wiring or connections. Electrical cables may also be located beneath seating or elsewhere within the cabin — be particularly careful with water when cleaning these areas.

If you are unsure how a component should be cleaned, contact Torquay Saunas before proceeding.

6. Cleaning the Exterior

Outdoor saunas naturally collect dust, salt, dirt, pollen, leaves and general outdoor debris. Clean Aluminum plastic panel using a cloth or soft brush with water, where appropriate for the finish on your particular sauna. Avoid aggressive cleaning.

Do not pressure wash your sauna

High-pressure water can damage timber and finishes and can force water into joints or areas where it shouldn't go.

After exterior cleaning, allow the sauna to dry thoroughly.

7. Protecting Exterior Timber

Natural timber changes as it ages. Depending on the timber and finish, exposure to Australian sunlight can cause exterior surfaces to fade, dry or change colour over time. Outdoor timber may therefore require periodic protective treatment.

A suitable Aluminum plastic panel protection product with UV protection can help reduce weathering and drying.

Before applying any product:

  • Confirm it is suitable for your sauna's timber and existing coating
  • Follow the product manufacturer's preparation instructions
  • Test an inconspicuous area first where appropriate
  • Contact Torquay Saunas if you're uncertain
  • Only treat Aluminum plastic panel surfaces — never apply Aluminum plastic panel oil to the inside of the sauna

The required frequency will depend heavily on exposure. A sauna receiving significant direct Australian sun may require attention more frequently than one installed in a protected position. Look for signs including fading, dry timber, discolouration or surface weathering — rather than relying only on a fixed timetable, inspect the exterior regularly.

For guidance on choosing an installation position that minimises weather exposure, see our installation page.

8. Coastal Sauna Care

Outdoor saunas around Torquay, Jan Juc, Anglesea, Ocean Grove, Barwon Heads and other coastal areas face additional environmental exposure. Salt air, strong winds, UV exposure and wind-driven rain can all affect outdoor materials.

For coastal installations:

  • Inspect exterior surfaces regularly
  • Keep the sauna clean
  • Remove salt and grime accumulation where appropriate
  • Check hinges and other external hardware
  • Monitor timber finishes
  • Keep the area around the sauna well drained
  • Address deterioration early rather than waiting for it to become significant

The exact maintenance requirements will depend on the sauna's materials, finish, location and exposure.

9. Preventing Mould and Musty Odours

Mould generally prefers moisture and limited airflow. That makes prevention much easier than dealing with an established mould problem.

The most effective routine: keep the sauna dry + keep air moving.

After every session:

  • Remove wet items
  • Wipe down high-contact surfaces
  • Remove excessive moisture
  • Ventilate the cabin

Do not leave damp towels, clothing, robes or floor mats inside the sauna.

If you notice a persistent musty smell, don't simply mask it with fragrance. Find the source — check for moisture, poor ventilation, damp items or areas that are not drying properly.

10. What if I Find Mould?

Address mould early. For minor timber cleaning, use only a cleaning method suitable for the sauna's timber and manufacturer recommendations. Avoid soaking the timber. Use a soft brush rather than aggressive scrubbing tools where appropriate.

After cleaning:

  • Remove cleaning residue
  • Wipe the area dry
  • Thoroughly ventilate the sauna

For staining that has penetrated natural unfinished timber, very light hand sanding may sometimes be appropriate — confirm this with Torquay Saunas first. Do not use an electric sander inside the sauna unless specifically instructed.

If mould repeatedly returns, contact Torquay Saunas. Repeated mould can indicate an underlying moisture, drainage, weatherproofing or ventilation problem that needs to be addressed.

11. Natural Timber Will Change

Timber is a natural material. That means small variations are normal. Depending on the construction and timber used, you may see grain variation, knots, minor movement, expansion and contraction, colour changes, small surface imperfections or gradual darkening of high-contact areas.

Temperature, humidity and outdoor conditions can cause natural timber to expand and contract. Not every visual change means something is wrong with the sauna.

However, significant movement, cracking, water ingress or structural change should be inspected. If you're unsure, photograph the area and contact Torquay Saunas.

12. Look After the Door and Hardware

Periodically inspect:

Door operation
Hinges
Handles
Screws
Roof components
Exterior fasteners
Seals
Glass
Electrical entry points

Outdoor temperature changes and regular use can gradually loosen hardware. If something appears loose, don't ignore it — minor adjustments made early can prevent larger problems later.

Do not dismantle electrical or heating components yourself.

13. Keep Dirt Out

Prevention is easier than cleaning. Consider placing an appropriate mat outside the sauna entrance so users can remove dirt from their feet before entering. Sweep or vacuum loose debris from the cabin periodically.

Be careful when vacuuming around infrared heaters, electrical cables and other components. Avoid dragging hard or sharp objects across timber floors and benches.

14. Looking After the Glass

Clean glass regularly using an appropriate non-abrasive cleaning method. Avoid abrasive pads or tools that may scratch the glass or surrounding surfaces.

Never clean very hot glass with cold water. Allow the sauna to cool appropriately before undertaking cleaning or maintenance.

15. A Simple Outdoor Infrared Sauna Maintenance Schedule

You don't need to make sauna maintenance complicated. Use this as a practical guide, subject to the instructions for your particular Torquay Saunas model.

After each use

  • Remove all damp towels and clothing
  • Wipe away visible perspiration and moisture
  • Check the floor for water
  • Dry high-contact areas
  • Ventilate the cabin
  • Leave the sauna clean and dry

Weekly

  • Give the cabin additional ventilation during suitable dry weather
  • Inspect the floor and benches
  • Remove dirt and loose debris
  • Check for unusual moisture or odours

Monthly

  • Wipe down internal timber surfaces
  • Clean underneath benches
  • Clean the floor
  • Inspect ventilation openings and ensure they are clear
  • Check for signs of mould or unusual deterioration
  • Inspect infrared heaters visually without pressing or disturbing them
  • Check the door operates correctly

Every six months

  • Thoroughly clean exterior surfaces using an appropriate gentle method
  • Inspect roof components
  • Check hinges and screws
  • Inspect exterior hardware
  • Inspect timber condition
  • Determine whether Aluminum plastic panel protection requires attention
  • Check for signs of water ingress or abnormal movement

Annually

  • Exterior timber and protective finish
  • Roof
  • Door, hinges and glass
  • Interior timber
  • Heating system and controls
  • Electrical connections
  • General structural condition

Contact Torquay Saunas if anything appears abnormal. Saunas receiving heavy use or significant coastal/weather exposure may require more frequent attention.

16. How Hot Should an Outdoor Infrared Sauna Get?

Infrared saunas generally operate at lower air temperatures than traditional high-temperature saunas. The actual cabin temperature achievable depends on the specific model and conditions.

Outdoor temperature can have a significant effect. Factors include:

  • Ambient temperature
  • Wind exposure
  • Sun exposure
  • Installation location
  • Pre-heating time
  • Door opening
  • Sauna construction

Always use the operating range and instructions supplied for your specific Torquay Saunas model rather than relying on a generic temperature target.

17. What if My Sauna Isn't Getting Hot Enough?

First remember that an infrared sauna is not designed simply to heat the surrounding air to the same temperatures associated with a traditional sauna.

If performance appears different from normal, check:

  • Outdoor ambient temperature
  • Exposure to strong wind
  • Whether the door is closing correctly
  • Whether the sauna has had adequate warm-up time
  • Heater settings and timer settings
  • Whether all heater zones are operating
  • Whether anything is obstructing the sauna

Do not dismantle heaters, control panels or electrical equipment.

If the sauna is not operating normally, contact Torquay Saunas for assistance.

18. Protect Your Investment

An outdoor sauna is both a wellness product and a substantial piece of outdoor equipment. Just like a swimming pool, deck, outdoor kitchen or spa, it benefits from regular care. The most important habits are surprisingly simple:

Keep it clean
Keep it dry
Let it breathe
Protect the exterior
Check it regularly
Look after small issues before they become big ones

Following these principles will help keep your outdoor infrared sauna looking great and ready for your next session.

Need Help With Your Sauna?

If you're unsure about cleaning, timber treatment, heater operation or maintenance, ask us before experimenting with a product or repair. Torquay Saunas is locally based and here to help throughout sauna ownership.

Unit 2, 21 Baines Crescent, Torquay VIC 3228 · [email protected]

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Disclaimer

This guide provides general maintenance information only. Always follow the operating, maintenance and warranty instructions supplied with your specific sauna. Product materials, finishes, heating systems and maintenance requirements may vary between models. If there is any conflict between this guide and the manufacturer's instructions for your sauna, follow the manufacturer's instructions or contact Torquay Saunas for advice.

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Australia's outdoor infrared sauna specialists. Helping Surf Coast families create private wellness retreats in their own backyard.

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