Overview
GRP skins are UV-stable but some colours fade - reds and dark blues most, blacks and whites least. Coastal Cornwall's UV levels are higher than average.
Symptoms
- Colour dulled compared to sheltered edges.
- Uneven fade in south-facing installs.
Common causes
- UV exposure.
- Salt air acceleration.
- Poorer-grade pigments in cheap doors.
When to call a professional
- For a warranty claim assessment.
Prevention
- Choose brands with UV-stable pigment warranties.