Materials and technologies

Powder Coating (Komaxit)

Aluminium profile with a matt anthracite powder coating

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 coatingAnodisingWet paint
PrinciplePowder baked onto the surfaceElectrochemical treatment of the aluminium surfaceApplication of liquid paint
Suitable forSteel and aluminiumAluminium onlySteel and aluminium
Colour rangeThe whole RAL paletteLimited, metallic shadesThe whole palette
Thickness of the layerHigherVery thinLower
Resistance to abrasionHighHighLower
Repair of damageLocally, with touch-up paintPractically impossibleLocally, by respraying
Solvents during applicationNoNoYes

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.

Frequently Asked Questions

Yes, the powder layer offers higher resistance to scratching and abrasion than typical wet coatings at a comparable layer thickness.

Yes, with proper surface preparation and a suitable formulation, powder coating withstands long-term exposure to weather.

Minor damage can be repaired by local touch-up coating; larger areas require the surface to be re-prepared and resprayed in a workshop.

Yes, from the standardised RAL palette, which ensures a precise and repeatable colour match on larger orders.

With correct application and normal maintenance, the surface retains its appearance and protective function for many years.

Anodising is an electrochemical process specific to aluminium, while powder coating is applied to both steel and aluminium and offers a wider colour range.
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