Rustins Yacht Varnish for External Sauna Wood

Rustins Yacht Varnish for External Sauna Wood
Premium Exterior Sauna Wood Protection

Preserve. Protect. Enhance.

The Rustins Yacht Varnish is the ultimate solution for safeguarding your sauna’s exterior against the harshest elements. Specially designed for outdoor sauna wood, this high-performance varnish provides long-lasting protection from rain, UV rays, fluctuating temperatures, and moisture, ensuring your sauna remains in top condition for years to come.

While it is essential for outdoor saunas exposed to the unpredictable British weather, it can also be applied to the exterior wood of indoor saunas, particularly in commercial settings, for added durability and a polished finish.

 

Product Highlights

• Specially formulated varnish for sauna exteriors
• Creates a durable, weather-resistant barrier against rain, UV rays, and temperature fluctuations
• Prevents cracking, peeling, warping, and fading
• Enhances the natural grain and colour of the wood
• Water-resistant and UV-protective formula
• Easy to apply and maintain
• Suitable for all types of sauna wood, including thermo-treated woods

 

Benefits

• Shields wood from moisture, UV rays, and temperature changes
• Prevents warping, cracking, splitting, and decay
• Extends the lifespan of outdoor saunas by protecting against the elements
• Maintains the wood’s natural colour and grain pattern
• Adds a polished, professional finish to your sauna’s exterior
• Simplifies cleaning and reduces long-term maintenance
• Ensures the sauna remains visually appealing for years

 

When & Where to Use

Outdoor Saunas:

• Applying Rustins Yacht Varnish to the exterior is absolutely essential for outdoor saunas to prevent damage caused by rain, UV rays, and temperature changes.
• Apply immediately after your sauna is delivered and installed. Ideally, the varnish should be applied the same day, but within the first few days is crucial to ensure the wood is protected before exposure to weather conditions.
• Check the weather forecast before application. The varnish requires sufficient drying time, and exposure to rain or high humidity before the varnish has fully dried can compromise the finish and protection.

Indoor Saunas:

• While not critical for residential indoor saunas, applying varnish to the exterior can still offer added protection, especially in high-traffic commercial settings or moisture-prone environments.

 

How to Apply Rustins Yacht Varnish

1. Preparation:

• Ensure the wood surface is clean, dry, and free of dust or debris.
• Lightly sand any rough areas and wipe the surface with a clean cloth.
• Check the weather forecast before starting. Avoid application on days with expected rain or high humidity to allow proper drying.

2. Application:

• Stir the varnish well before use.
• Using a high-quality brush or roller, apply a thin, even coat along the wood grain.
• Allow the first coat to dry fully (typically 4-6 hours) before applying a second coat.

3. Number of Coats:

• Outdoor Saunas: Apply at least 2-3 coats for maximum protection.
• Indoor Saunas (Commercial Use): 1-2 coats can help enhance durability and appearance.

4. Maintenance:

• Periodic Inspections: We recommend conducting a thorough inspection of your sauna’s exterior every 6 months to check for any signs of wear, such as surface cracks, dullness, peeling, or fading. Early detection of minor issues can prevent more extensive damage over time.
• Reapplication Frequency: The need for reapplication largely depends on your sauna's location and exposure to the elements.
  • High-Exposure Locations (e.g., saunas situated on elevated terrain, in open countryside, or near coastal areas) are more vulnerable to harsh weather conditions like strong winds, heavy rainfall, and salty air. These saunas may require more frequent reapplications or additional coats for optimal protection.
  • Sheltered Locations (e.g., saunas in urban, inland, or tree-covered areas) generally face less exposure and can follow a standard maintenance cycle.
• General Recommendation: As a baseline, we advise reapplying the varnish approximately every 12 months. However, if your sauna is in a high-exposure area or shows early signs of wear during your 6-month inspection, consider applying a fresh coat sooner to maintain peak protection.
• Cleaning: Regularly clean the sauna’s exterior with a damp cloth to remove dust, dirt, and debris. Keeping the surface clean helps maintain its polished appearance and reduces the likelihood of dirt buildup, which can accelerate wear.

By following this maintenance routine and adapting reapplication frequency based on your sauna’s environment, you can ensure long-lasting protection and preserve the wood’s natural beauty for years to come.

 

Product Specifications

• Size: 1 Litre
• Coverage: Up to 14 m² per litre per coat
• Finish: Clear, High-Gloss or Satin (depending on application)
• Drying Time: 4-6 hours between coats
• Suitable For: All sauna woods, including thermo-treated

  

Delivery Information

• Free Delivery when ordered alongside a sauna.
• Standalone Orders: £9.99 delivery fee applies

Why Protecting the Sauna Interior Is Equally Important

While Rustins Yacht Varnish provides critical protection for the sauna’s exterior, safeguarding the interior wood is just as vital to maintain the sauna's longevity and appearance. Continuous exposure to steam, heat, and sweat can lead to discolouration, bacterial growth, warping, and eventually, cracking of the interior wood.

For optimal protection of the sauna's interior, we recommend using the Interior Sauna Wood Treatment White Oil (Paraffin Oil). This high-grade, medical-quality paraffin oil deeply penetrates the wood, forming a protective barrier against moisture and bacteria while preventing discolouration and cracking.

Key Benefits of Interior Sauna Wood Treatment White Oil:

• Shields interior wood from steam damage, sweat stains, and bacteria
• Prevents cracking by maintaining the wood’s natural moisture
• Enhances the wood’s natural grain and finish
• Prolongs the life and aesthetic of your sauna’s interior

Click Here to View Interior Sauna Wood Treatment White Oil

By using Rustins Yacht Varnish on the exterior and Interior Sauna Wood Treatment White Oil on the interior, you ensure complete protection for your sauna—inside and out—maximising its durability, safety, and visual appeal.

 

The Bottom Line

The Rustins Yacht Varnish is an essential protective coating for all outdoor saunas and a valuable upgrade for the exterior of indoor saunas in commercial environments. By creating a durable, weather-resistant barrier, this varnish preserves the natural beauty of your sauna while defending it against rain, UV rays, and moisture—ensuring it stays visually stunning and structurally sound for years to come.

For outdoor saunas, it is crucial to apply this varnish immediately after installation—ideally the same day or within the first few days—to prevent weather-related damage. Always ensure the forecast allows sufficient drying time before application.

For complete protection, pair this with our Interior Sauna Wood Treatment White Oil to safeguard the sauna’s interior wood from steam, sweat, and bacterial damage.

Protect your sauna. Preserve its beauty. Maximise its lifespan.