Overview
GRP composite doors are not designed to be painted - the surface is a smooth gel-coat that most paints don't bond to. If yours has been painted and is now failing, options are limited.
Symptoms
- Flaking, bubbling or patchy paint.
Common causes
- Paint applied over unprepared GRP.
- Wrong paint type (household emulsion or gloss instead of specialist).
When to call a professional
- Assessment for repaint vs replacement.
Prevention
- Choose a factory-coloured door.