It is best to store aluminium profiles - whether roof edges, sills or wall copings - dry (indoors) at a constant temperature and with sufficient ventilation. If the foil is still around the profiles, this corrosion will be more local. If there is insufficient ventilation between the profiles - and therefore a lack of evaporation - corrosion will occur. It often feels cold and attracts moisture which finds its way under the foil.
#Does aluminum rust free
It is best to transport and store the aluminium profiles free of moisture. If for example aluminium roof edges are delivered to the roof in the protective foil, we recommend installing the roof edges quickly. This is one of aluminium’s qualities: it is corrosion-resistant.Įnsure proper storage and prevent stainingīut watch out! If the corrosion occurs evenly, there is no problem. This is also known as ‘white rust’, but this is far too negative a term because a protective layer is formed. This can cause the aluminium to turn white.
#Does aluminum rust skin
In the case of aluminium an oxide skin is formed which - if evenly sealed - prevents further corrosion of the aluminium under that layer. Iron will rust and copper will turn green in similar circumstances. Corrosion occurs when aluminium comes into contact with water and oxygen. This layer prevents further corrosion of the aluminium. Instead, a more stable surface is created which acts as a protective layer. You might think that this is a bad thing. Without going into too much detail about this process, corrosion changes the surface of aluminium into a metal oxide. This is a natural chemical attack on the metal by environmental influences and in particular by so-called electrochemical reactions. In the case of aluminium, this need not be a problem at all. One of the differences between precious metals like gold, silver or platinum and base metals like iron and aluminium is that precious metals are less susceptible to oxidation than base metals. Below we explain what aluminium corrosion is, the advantages of corrosion, and what you can do to prevent corrosion staining. You can do something about that quite easily. This is almost always due to incorrect storage of our aluminium roof edges, wall copings or other aluminium profiles on the building site or incorrect handling. We occasionally receive reports that our aluminium roof edges are showing stains in some places due to corrosion. Prevent staining and ensure proper storage and handling
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