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Older and cheaper films could turn yellow after a few years in the sun. Modern urethane films like Polyshield’s are made to resist yellowing, using UV-stable materials and a protective topcoat. Yellowing is covered under the Polyshield warranty.
Why older film yellowed
Early films used materials that broke down under UV light. Over time the film, and sometimes the adhesive behind it, turned yellow or cloudy. It showed most on white and silver cars. That reputation still follows PPF today.
What changed
Today’s quality films use urethane with UV inhibitors built in, and a topcoat that shields the layers beneath from sun and pollution. Under normal conditions, clear film stays clear for the life of its warranty.
What can still discolour film
- Pollution and road film baked onto the surface. This is staining on top, and usually washes off.
- Harsh chemicals such as strong degreasers or solvents.
- Never washing it. Contaminants left on for months can stain the topcoat.
How to keep it clear
Wash it regularly with a pH-neutral shampoo. Clean off bird droppings and sap quickly, and park undercover when you can. See How to wash a car with PPF.
Talk to a Polyshield installer.
Get advice and a quote based on your car, its paint and the coverage you want.
Related guides
Talk to a Polyshield installer.
Get advice and a quote based on your car, its paint and the coverage you want.