| Definition |
 |
Mechanical damage with
rust underneath the paint film. |
| |
|
| Cause |
|
Impact from stone chips
in connection with road salt and moisture. |
|
Bare metal was exposed
to moisture prior to priming. |
| |
|
| Prevention |
|
Before you apply the primer,
clean the substrate thoroughly and blow with
air. |
| |
|
| Remedy |
|
Sand paint down until bare
metal becomes visible. |
|
Refinish with an anti-corrosion
primer, then apply the usual surfacer and
middle coat. |
