Yes — yellowed uPVC windows and door frames can be restored professionally. There are two approaches depending on your goals.
Why Does uPVC Go Yellow?
uPVC yellows primarily due to UV exposure. The titanium dioxide pigment that gives white uPVC its brightness breaks down under ultraviolet light over time, causing the surface to take on a cream, yellow or brown tint. This is most pronounced on south-facing windows and on uPVC that has been exposed to direct sunlight for many years.
Certain cleaning products — particularly those containing bleach — can accelerate yellowing.
Option 1 — Recolouring to White
Using specialist flexible coatings formulated for uPVC, we can recoat yellowed frames in white (or any other colour). The existing frames are cleaned, degreased, primed with a specialist uPVC primer and then coated in the chosen colour. The result is fresh, bright frames that look like new uPVC.
Option 2 — Colour Change
Many homeowners take the opportunity of a respray to change the colour of their frames — from white to anthracite grey or black, which are far more popular in current design trends. This gives a complete exterior refresh at a fraction of the cost of new windows.
Cost
uPVC recolouring for a typical 3-bedroom house: £800–£2,500. This compares to £5,000–£20,000 for window replacement. The saving is enormous.
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