Do UPVC casement windows need to be treated with anti-corrosion paint regularly?

UPVC casement windows usually do not require regular anti-corrosion coating treatment. UPVC material itself has excellent corrosion resistance and can resist the erosion of most chemicals and harsh environments, so its window frame usually does not require additional anti-corrosion coating. However, if there are signs of rust on the metal accessories of the window (such as hinges, handles, etc.), local anti-corrosion treatment can be carried out on these parts to extend their service life.
The corrosion resistance of UPVC casement windows comes from their material properties. UPVC (Unplasticized Polyvinyl Chloride) is a polymer material with a stable chemical structure and natural resistance to chemicals such as acids, alkalis, salts, as well as environmental conditions such as humidity and high temperatures. This enables UPVC window frames to maintain their performance and appearance for a long time under normal use, without the need for anti-corrosion coatings to enhance their corrosion resistance.
Anti corrosion coatings are mainly used for surface treatment of metal materials to prevent chemical reactions such as oxidation and corrosion. As a non-metallic material, the anti-corrosion requirements of UPVC window frames are fundamentally different from those of metallic materials. Therefore, from the perspective of material properties and anti-corrosion requirements, UPVC casement windows do not require regular anti-corrosion coating treatment.
However, it should be noted that although UPVC window frames themselves do not require anti-corrosion coating treatment, metal accessories such as hinges and handles of the windows may corrode due to long-term exposure to humid environments. For these parts, regular cleaning and lubrication can be carried out, and anti-corrosion coatings can be applied if necessary to extend their service life.