To prevent corrosion of the aluminium, direct contact with copper, lead, zinc, steel, chemicals, plant food, etc. should be avoided. This can be done for example by separating the aluminium using a protective foil.
The expansion coefficient of aluminium is 28.8. 10-6/ºC, which at a temperature difference of 50ºC means linear expansion of ±1 mm per metre profile. When installing on the outside of a building, clearance of at least 3 mm per side should be taken into account because of large linear expansion due to sunlight or the colour of the aluminium. Aluminium profiles should be stored in a dry environment and supported to prevent undesirable deformation and/or visual imperfections.