How it works…

Aluminium naturally oxidises when exposed to the atmosphere. The oxide layer protects the underlying metal.

Anodising is the process by which the oxide film is increased by electrolysis, producing good resistance to corrosion and protecting the surface finish. The oxide film can then either remain in its satin or polished finish, or it can be coloured.

We use technology to evaluate the bath temperature, current and type of load, and to calculate the immersion time for precise film thickness, measured in microns.*

*As a guide 5 microns is the usual internal grade for use in offices, while 10 or 15 microns is used for internal applications or more robust uses such as handrails and partitions. 25 microns is recommended for all external applications.