Finishing of RENSON aluminium grills

Finishing of RENSON aluminium grills ensures durability and weatherproof and weatherproofness. By nature, aluminium generates a natural oxide coating and it is very corrosion resistant. And aluminium has resistance against UV radiation from sunlight and can easily resist to temperature variations. Various types of surface treatments improve its corrosion resistance even further.

Finishing of RENSON aluminium grills

By nature, aluminium generates a natural oxide coating and it is very corrosion resistant. And aluminium has resistance against UV radiation from sunlight and can easily resist to temperature variations. Various types of surface treatments improve its corrosion resistance even further.

Anodisation

A layer thickness of 20 microns is applied as standard. For applications in an aggressive atmosphere, a layer thickness of 25 microns is recommended. Anodisation is usually done using a natural shade of grey (F1), but can also be done in a limited number of other colours (Euras). Colour differences are possible with anodisation, both within the same surface and between different pieces. These differences mainly occur with colour anodisation.

Powder-coating

The choice of a very wide colour palette and the minimal risk of colour differences are two important reasons for choosing powder-coatings. Powder-coating is standard with a layer thickness of 40 microns. Depending on the environment, different pre-treatments can be applied:

• Standard pre-treatment
  Correct pre-treatment of the aluminium is essential for optimum quality. This pre-treatment is carried out in accordance with the applicable directives and consists of a sequence of staining, degreasing, rinsing, and the application of a conversion layer.
• Pre-treatment conform Seaside Quality A
  We recommend a pre-treatment in accordance with Seaside Quality A for applications in aggressive environments (e.g. coastal regions, in industrial atmospheres, etc.). This halves the risk of filiform corrosion under the paint in comparison with standard coated profiles.
• Pre-treatment before anodizing
  For applications in highly aggressive environments (e.g. coastal regions, on the coastline, in industrial atmospheres, etc.), we recommend pre-treatment before anodizing. This halves the risk of filiform corrosion under the paint in comparison with standard coated profiles.