Outdoor Sauna Care Guide: How to Maintain Your Clearlight® Outdoor 2 & 5 Saunas

Owning a Clearlight® Outdoor Sauna is an investment in your long-term health and wellbeing. To ensure it lasts for decades, proper care and maintenance are essential. Outdoor saunas are exposed to the elements; sun, rain, snow, and humidity, so looking after both the wood and the electrical components will protect your sauna and keep every session safe, clean, and enjoyable.

In this guide, you’ll learn how to care for your outdoor sauna with weekly, monthly, and seasonal routines, as well as the best cleaning methods, weather protection tips, and wood preservation techniques.

Outdoor Sauna Maintenance Routine

Weekly Care

• Wipe down interior surfaces with a soft cloth using warm water and mild natural soap. Avoid harsh chemicals that could damage the wood or off-gas when heated.

• Check for moisture buildup or mold—particularly if you live in a humid climate.

• Brush off debris from the roof and exterior (leaves, dirt, sap) to prevent staining and water damage.

Monthly Care

• Vacuum or sweep the floor to remove dirt and dust.

• Inspect heater panels for dust buildup and wipe gently with a microfiber cloth (only when they are cool and powered off).

• Check electrical connections for visible wear or exposure to moisture.

Seasonal Care (Every 3–6 Months)

• Re-seal the wood exterior with a UV-resistant, weatherproof, sauna-safe sealant.

• Lubricate hinges and locks using a silicone-based lubricant to prevent rust.

• Inspect for pests such as insects or rodents, especially around the base.

Cleaning Tips for Outdoor Saunas

Interior Cleaning

• Mix white vinegar and water (1:1) in a spray bottle for a natural disinfectant.

• Wipe benches, walls, and floor after each use to prevent sweat stains and bacteria buildup.

• Avoid bleach or harsh chemical cleaners—they can release toxins when the sauna heats up.

Exterior Cleaning

• Use a soft brush and mild wood cleaner to gently clean the exterior.

• Rinse with low-pressure water (avoid power washers that can damage the wood).

• Position your sauna away from direct tree cover to minimise sap and leaf buildup.

Protecting Your Sauna from Weather

Outdoor saunas are designed to withstand the elements, but proactive protection will extend their lifespan.

• Use your complimentary sauna cover, or ensure it is kept under a weatherproof shelter, to shield from rain, snow, and UV exposure (as required by warranty).

• Elevate the sauna on a platform to prevent pooling water from damaging the base.

Winter Care

• Regularly shovel snow off the roof to avoid excess weight.

• Use a moisture barrier or tarp around the base to reduce ice damage.

Electrical and Safety Checks

Outdoor saunas require extra attention to electrical safety:

• Have a licensed electrician inspect the sauna annually.

• Ensure it’s connected to a GFCI outlet for outdoor safety.

• Use surge protection to safeguard sensitive infrared electronics.

Wood Preservation Tips

Wood is at the heart of your sauna, so proper treatment keeps it beautiful and durable:

• For interiors, apply a water-based, Low/No-VOC varnish after installation for added protection.

• Lightly sand the wood before resealing to ensure proper absorption.

• For exteriors, use sauna-safe oils or stains designed to resist UV and moisture damage.

Common Mistakes to Avoid

• Don’t leave towels or damp fabrics inside—moisture leads to mildew.

• Avoid using the sauna during extreme storms or if grounding is compromised.

• Never block ventilation ports or infrared emitters.

Best Practices for Longevity

• Keep a maintenance log of dates, repairs, and upgrades.

• Leave the door slightly ajar after each use to release moisture.

• Install a hygrometer and thermometer to monitor humidity and temperature levels.

Outdoor Sauna Care FAQs

How often should you clean an outdoor sauna?

For the best results, wipe down interior surfaces after each use, do a light clean weekly, and a deep maintenance check every 3–6 months.

Can you leave an outdoor sauna outside all year?

Yes, Clearlight® Outdoor Saunas are built for year-round use. However, using a cover, sealing the wood seasonally, and clearing snow in winter will extend their life.

What products should I use to protect my outdoor sauna wood?

Use a sauna-safe, non-toxic, UV-resistant wood sealant or oil. Avoid standard paints or varnishes that can release chemicals when heated.

How do I prevent mould in my outdoor sauna?

Keep the sauna well-ventilated by leaving the door slightly ajar after use, wiping down benches, and avoiding leaving damp towels inside.

Final Thoughts

Caring for your outdoor sauna doesn’t need to be complicated. With a consistent maintenance routine and the right protective steps, your Clearlight® Outdoor Sauna will remain a luxurious, safe, and rejuvenating retreat for many years to come.

Looking for more expert advice on sauna care? Speak with one of our Sauna Specialists today to get personalised recommendations for your climate and setup.