Corrosion Guide

Corrosion Guide

Corrosio​n Guide

While aluminium frames are known for being strong, reliable and corrosion resistant, if not maintained regularly, the risk of corrosion can increase. This guide explains aluminium corrosion, offers guidance on how to best minimise the risk of corrosion, helps you to identify early signs of corrosion and suggestions for how to best treat corrosion. 

Why might aluminium corr​ode? 

Curtin University was commissioned by the Australian Aluminium Council (AAC) in Canberra to independently research the reasons that aluminium products might corrode. The research shows that corrosion is not related to the type or quality of the aluminium product, but rather the environment in which it sits. Therefore, corrosion is not covered under warranty. The Curtin research validates earlier studies conducted by James Cook University in Queensland, Monash University in Victoria and the CSIRO in Canberra.
When aluminium frames are openly exposed a thin layer (aluminium oxide) forms on the surface acting like a protective layer. Crevices between the brickwork and the aluminium section can be hard for the protective aluminium oxide to reach increasing corrosion risk. Corrosion in window, door and security frames is caused when an accumulation of chloride salts forming in the crevices is combined with moisture. These spaces stay wet for longer, furthering the effects of corrosion the longer they are left alone. Airborne pollutants left sitting on the aluminium frame surface can also contribute to corrosion. 

How to redu​ce the chance of corrosion

Powder coated aluminium is extremely durable and weather resistant. However, like all fixtures around the home, some maintenance is required to preserve the original appearance of the product. Deposited grime absorbs moisture and holds it against the powder coated surface of your frames, damaging the coating. Keeping reticulation from reaching your aluminium frames will help to reduce chances of corrosion. If you have garden beds in front of windows, keep the soil and mulch well away from the frames and use drippers for irrigation to minimise water spraying onto the frames. 

In addition, regular preventative cleaning of your aluminium frames provides the best chance of reducing the risk of corrosion. Preventative cleaning should be done:
  1. every 6 months for residential areas or; 
  2. every 3 months in coastal areas or near a swimming pool.
Refer to the Jason Windows Maintenance Guide for all cleaning and maintenance requirements. 


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