Staining

Over hardening body filler causing a discoloration of the new finish.

Cause

Absorption of pigment from the underlying paint, dissolved by the solvents of the new coat.

Prevention

1. Test the original finish by spraying a small, flatted area.
2. Use an approved bleeding inhibitor sealant.
3. Remove any overspray from the surface before painting.

Rectification

Rub down to the original finish, seal with a recommended sealer and repaint.