Paint damage showing as irregularly shaped blister-like lifting of the paint surface.
- Mechanical damage to the paint surface (e.g., stone chips, scratches) causing penetration of moisture to the underlying coats or metal substrate
- Poor preparation of the metal prior to painting. Insufficient cleaning (see entry on “Blistering”). Poor derusting or poor removal of metal particles left on the surface from sanding
- Flash rust formation, e.g., on newly sand-blasted surfaces
- Inadequate or missing cavity sealing (rust perforation)
HOW TO AVOID
- Repair damaged paintwork immediately.
- Thoroughly clean the metal surface with Glasurit 360-4 Metal Cleaner. Remove all rust by sand blasting to produce a bare metal substrate. Tin all welded seams.
- Prime all sand-blasted areas immediately.
- Seal and protect all areas as recommended.
Remove paint system and corrosion (rust) from the affected areas (by sanding, stripping, sand blasting). Clean the area again with Glasurit 360-4 Metal Cleaner and Glasurit 541-5 Wax and Silicone Remover. Refinish using the recommended undercoats and topcoats.