Discolouration of the topcoat, either in the form of a halo, or, in severe cases, a complete colour change. This defect usually only occurs when spraying over red or maroon paint.
Absorption of pigment from the underlying paint, dissolved by the solvents of the new coat.
- Test the original finish by spraying a small, flatted area.
- Use an approved bleeding inhibitor sealant.
- Remove any overspray from the surface before painting.
Rub down to the original finish, seal with a recommended sealer and repaint.