Painting the garden sauna correctly
Step by step to optimal wood protection
A garden sauna not only offers relaxation, but also places special demands on care and wood protection. Especially when painting, there are some important points to consider in order to maintain the functionality, appearance and durability of the wood - without endangering health. This guide shows you how to paint your garden sauna professionally - depending on whether it was delivered untreated or coloured.
General information in advance
- Only the outsides are painted – in the interior of the sauna no painting can be done , as toxic fumes can form at high temperatures.
- Treat cut edges and panels before assembly , as they are difficult to access later.
- Use only breathable wood preservatives
Sauna house was delivered natural / untreated
Paint the outside
- Delete the Outside exclusively according to the construction of the sauna.
- Use a coloured combination glaze , which has already been a Waterproofing primer contains . This protects the wood from weather, UV radiation and fungal infestation.
- Why colorful? One colourless glaze contains none Color pigments and therefore does not protect against greying due to solar radiation.
Treating cut edges
- Before the E Rear panels in the plug-and-screw system are to be installed, the untreated cut edges be deleted.
- A simple Waterproofing primer as these areas are less exposed.
tongue and groove connection may be not be deleted
- These connections remain untreated , as they run between interior and exterior walls .
- Accidental ink entry on the inside can cause a Harmful gases Release!
Vestibule and door (if available)
- The Anteroom as well as the Door to the vestibule may be marked from the inside with a Universal wood protection glaze for interiors be deleted.
Look for a product that solvent-free .
Sauna house delivered in colour
If your garden sauna has already been delivered with a coloured protective layer, there is no need to paint the outer surfaces.
Nevertheless, it is important to treat cut edges
- Here, too, the untreated cut edges before installing the corner panels with a Waterproofing primer be treated.
tongue and groove connection may be not be deleted
- These compounds are already machine-treated by us . The paint is hardened and dried, there is no health risk here!

Vestibule and door (if available)
- As with the untreated version, the inside of the Anteroom s and the Door to the vestibule with a Interior glaze be deleted.
Recommendation: Suitable products for wood protection
To ensure that your sauna house is well protected in the long term, we recommend high-quality wood preservatives:
- Waterproofing primer for cut edges
- Coloured wood protection glaze with integrated UV protection for the outer surfaces
- Solvent-free, colourless glaze for indoor use (if vestibule is available)
Sample products:
- Waterproofing primer : Remmers IG10
- Paint glaze for exterior : Remmers HK glaze (3 in 1 combination glaze, including impregnation primer)
- Inner glaze : Burtex Prima wood glaze
What you should avoid at all costs
- Do not use paint inside the sauna room – also no "natural" or "biological" means.
- Do not use sealing products for painting – the wood must be able to continue to "breathe".
- No high-pressure cleaner for cleaning before painting – better with a broom or soft brush so as not to damage the wood surface.
Conclusion
With the right preparation and suitable products, you can protect your garden sauna from weather, wood damage and discoloration in the long term - without impairing the sauna function. Particularly important is the No paint at all in the interior the sauna as well as the Careful treatment of the cut edges before assembly.
As of August 2025