
Komaxit is the regional term for a powder coating based on epoxy and polyester resins, applied to metal surfaces by an electrostatic process and then cured by baking at high temperature. In wellness structures, it is used to finish steel and aluminium components such as heater frames, structural fittings, or metal parts of pergolas, where standard paint does not provide sufficient durability. The powder coating forms a continuous, non-porous layer without solvents, which adheres well to the surface and resists mechanical scratching. Colour is selected from the RAL palette, allowing metal components to be precisely matched to the other construction materials. Powder coating is a common standard for metal components exposed to moisture and temperature change.
Advantages of powder coating
- High mechanical durability: The continuous powder layer resists abrasion and scratching better than a conventional wet lacquer.
- Corrosion protection: The non-porous coating prevents moisture from reaching the metal surface, extending the structure’s service life.
- Precise colour matching via the RAL palette: It allows metal components to be matched to the other construction materials without visible colour deviation.
- Solvent-free application: The powder process releases no volatile organic compounds, unlike conventional wet coatings.
Powder coating, anodising and wet paint
Three different surface finishes are used on the metal parts of pergolas, frames and structures. Powder coating is the most common of them, but not always the only suitable one.
| Powder coating | Anodising | Wet paint | |
|---|---|---|---|
| Principle | Powder baked onto the surface | Electrochemical treatment of the aluminium surface | Application of liquid paint |
| Suitable for | Steel and aluminium | Aluminium only | Steel and aluminium |
| Colour range | The whole RAL palette | Limited, metallic shades | The whole palette |
| Thickness of the layer | Higher | Very thin | Lower |
| Resistance to abrasion | High | High | Lower |
| Repair of damage | Locally, with touch-up paint | Practically impossible | Locally, by respraying |
| Solvents during application | No | No | Yes |
How powder coating behaves outdoors
The powder layer is continuous and non-porous, so on its own it stops corrosion. The critical points are therefore cuts, drilled holes and mechanical damage that occurs after coating – that is where moisture reaches the metal. On structures that are cut to length or drilled on site, the cut edges are treated afterwards. Good exterior powder systems also deal with the resistance of the shade to UV radiation, which determines whether the colour fades over time.
Related terms: Bioclimatic louvres, ZIP Screen, Metal roofing, AISI 316.
