Even though uPVC profiles are mainly made of PVC, there are special additives that are added to give the profile its rigidity and making it an excellent choice for windows and doors.

The compounds which are added to the uPVC profile are:

  • Titanium dioxide
  • Heat stabilisers
    • Prevents the frames from becoming warped from solar radiation
  • Impact modifiers
    • Toughening agent to avoid damage when being handled
  • UV stabilisers
    • Protects the profile’s colour by reducing the effect UV rays have on the profile
  • Processing aids
    • Ensures that all profiles are uniform during and after manufacturing
  • Lubricants
    • Gives a smooth finish to the profile and helps the exterior to avoid scratches
  • Pigments
    • Adds colour to the profile


The importance of titanium dioxide

Titanium Dioxide is an important UV stabilising additive to ensure that the frame is protected from the sun’s UV rays. Lack of Titanium Dioxide leads to structural deformation due to the heat.

As well as protecting the structural integrity of the frame, Titanium Dioxide protects the profile from discolouration.

Deceuninck profiles have the highest Titanium Dioxide component at 9%, higher than any competitor. This is to ensure that your windows and doors remain in good condition even after years of harsh UV exposure.

Deceuninck have been supplying to the Middle East for decades which has extreme heat waves for a large part of the year. The continual use of throughout the Middle East shows the strength and durability of Deceuninck profiles and ability to withstand extreme conditions.

Deceuninck individually tests their profiles in each country to ensure that the additives are correct for the conditions the profiles will be exposed to. This is something that a lot of competitors are not doing, but rather going for a ‘one size fits all’ approach which leads to discoloured and warped profiles.