Description of problem:
Even the best paints will let water vapors through. When the
vapors go inside the film, they can lead to the weakening of the
adhesion between different coats. Bubbles containing water
may show through.
– Contamination of the surface before spraying.
– Insufficient ground coat.
– Insufficient topcoat.
– Inappropriate thinner.
- Final coat was exposed to high humidity before it was completely hard.
– Continuous exposure to high humidity / contaminated air supply.
– Residue of sanding water in corners, edges, rebates and below decorative strips.
– Insufficient isolation of polyester.
Sand carefully until all the bubbles have disappeared: In other words, if the bubbles
are in the topcoat, it will have to be removed. There is always the possibility that the
sanding residues fill the holes of the bubbles. The humidity that is withheld may
damage the substrate. The only way to get around this kind of problem is to sand all
the way through to the bare metal, clean with Valox, sand and repaint.
The presence of these types of bubbles around the headlights
or taillights may be an indication of rust coming form
underneath. Some micro holes in the metal might be letting
the water through. The bottom of the vehicle should be well
- TEMATY SZKOLEŃ
- Drying is too slow
- BULLES SOUFFLURES
- Stripping / Banding
- Fish eyes
- Spider’s web
- ATMOSPHERIC POLLUTION
- CRACKING OR RIPPLING
- Loss of gloss
- Low gloss
- ADHESION PROBLEMS OF THE CLEAR COAT
- Orange peel
- Pin holing
- Poor adhesion
- SHRINKAGE / EDGE MAPPING
- Poor opacity
- Color offshade
- SOLVENT POPPING
- Polish marks
- Sanding marks