When exposed to air, pure aluminium forms a thin surface layer which provides effective protection against corrosion on a natural basis. In order to increase their resistance, extruded heroal profiles for windows, doors, curtain walls and patio roofs can basically be treated in two additional ways: by powder coating or anodisation. During anodisation, the electrolytic oxidation of aluminium, an oxide layer builds up on the aluminium surface and increases the above mentioned natural oxide layer significantly. This way, the aluminium is a lot more resistant against adverse weather conditions and oxidation. In addition, the metallic appearance of the aluminium is intensified.
At heroal, you can either have your aluminium windows, doors or patio doors anodised or powder-coated. heroal hwr powder coatings can also imitate the metallic looks created through the Eloxal process, and also make sure that all shades of colour can always be easily reproduced.