Concrete tips for long-lasting colour retention
Aluminium windows are popular due to their aesthetic appeal, durability and low maintenance requirements. However, many homeowners wonder: can aluminium frames discolour over time? The short answer is: rarely, and only under specific conditions. Follow these practical tips to keep your windows looking their best for years to come.
Causes of discolouration
Although aluminium is highly resistant to rust, its finish can still be affected by external factors. The most common causes of discolouration are:
- UV radiation: prolonged exposure to sunlight can cause the coating colour to fade, especially in darker shades.
- Salt air: in coastal areas, salt spray can affect the finish, potentially leading to discolouration or corrosion.
- Chemicals: cleaning agents or air pollution may react with the coating layer.
- Poor coating quality: lower-quality or improperly applied powder coatings are more prone to discolouration.
How can discolouration be prevented?
Modern aluminium windows are typically finished with a high-quality powder coating, which provides protection against UV radiation, moisture and chemical exposure. To prevent discolouration:
- Choose windows with a recognised quality certification.
- Clean the frames regularly using mild, pH-neutral products.
- Avoid aggressive cleaning agents or abrasive materials.
- Ensure professional installation to prevent damage to the coating.
Aliplast: colour guarantee of up to 25 years
Aluminium windows are naturally colourfast, but Aliplast goes one step further. Aliplast carefully selects premium coatings that meet the Qualicoat label. The Qualicoat label is an international quality standard that guarantees that the powder coating on aluminium complies with strict requirements in terms of adhesion, colour stability, weather resistance and corrosion protection. In addition, our coating warranty carries the “Qualicoat Seaside” label, providing extra protection against aggressive environments (such as exhaust fumes or coastal conditions). As Aliplast works exclusively with top-quality coatings, we can offer a standard 15-year colour guarantee. You can even opt for a range with a 25-year colour guarantee—unique in the sector compared to the usual 10 years.
Aluminium windows are a durable investment. They typically last between 50 and 60 years and offer excellent resistance to rust and cracking. They are highly colourfast and have enhanced scratch resistance. Moreover, maintenance is minimal: there is no need to paint or varnish them. Cleaning them 2 to 4 times a year is sufficient, depending on your environment. To help preserve the colour, an annual treatment with a colour stabiliser is recommended. Aliplast offers dedicated, mild maintenance products for this purpose.
Conclusion
Aluminium windows are generally highly colourfast, especially when they feature a high-quality finish. Discolouration is rare and is usually the result of extreme conditions or insufficient maintenance. By choosing certified products and ensuring regular upkeep, your windows will remain attractive and stylish for many years.