Keep your sauna safe and your timber looking its best with Tikkurila Supi Saunavaha, a natural, water-based wax carrying the highest M1 indoor air rating. It’s one of the cleanest treatments you can use in a hot, enclosed space, protecting your air quality while giving the wood a beautifully soft, matte finish.

Designed specifically for sauna interiors, Supi Saunavaha shields benches and wall panels from moisture, dirt, and everyday wear without creating a plastic-like coating. The result is timber that stays smooth, natural, and easy to maintain year after year.

Choose from colourless, which preserves the natural colour of the wood, or black, which adds a modern contrast and instantly elevates your sauna aesthetic.

Safety & Air Quality

Supi Saunavaha carries the highest M1 indoor air classification, meaning:

• No harmful emissions evaporate into your sauna air
• Safe for enclosed, high-heat, high-humidity environments
• Ultra-low VOC formulation
• A cleaner option for families, commercial spaces, and wellness enthusiasts

It’s one of the safest interior treatments you can use, keeping both your timber and your air quality in top condition.

Specifications

• Type: Water-based natural wax for sauna interiors
• Finish: Matte
• Indoor Air Rating: M1 (highest classification, ultra-low emissions)
• Shades available: Colourless and Black
• Coverage: 10–13 m² per litre (varies by wood species)
• Drying time:
  • Dust-dry: 30–60 minutes
  • Ready for use: 24 hours
• Application tools: Foam brush, sponge, or soft synthetic-bristle brush
• Application method: One thin coat along the grain
• Suitable surfaces: Sauna benches, panelled walls and ceilings, doors and window frames
• Unsuitable surfaces: Oiled wood unless the oil has almost completely worn off and unprotected tile grout (can absorb wax)

Application

• Stir thoroughly before and during use.
• Apply one thin coat along the grain — only as much as the wood can absorb.
• Use a foam brush, sponge, or artificial-bristle brush (the wax is very liquid).
• Over-application may leave the surface slippery.
• Test coloured wax in a hidden area first; final colour depends on wood species.
• For an even finish, treat:
  • Small surfaces in one continuous motion
  • Large wall panels 1–2 boards at a time
• Pre-heat and ventilate the sauna thoroughly before use.

Datasheets

Click to download product datasheet

Click to download safety datasheet