A loss of adhesion or separation of the paint film from the substrate.

Cause
A. Improper preparation of the substrate. (Remaining moisture or oil)
B. Applying incompatible products together. (e.g. urethane and lacquer types)
C. Applying without sanding the previous paint film.

Repair
Remove the area wider than the damaged part and refinish.

Prevention
A. Clean and prepare the substrate thoroughly.
B. Use the recommended primer for the substrate.
C. Use compatible products by the system application.

Swelling as bubbles or pimples in the film.

Cause
A. Applying over water, grease or oil.
B. Rust on the substrate.
C. Exposure to the high humid condition.

Repair
Sand the swelling area or peel off to the substrate and refinish.

Prevention
A. Wash the substrate clearly.
B. Have enough drying time between coatings.
C. Remove the moisture in the air hose.

Temporarily or permanently, surface of the paint film loses gloss and becomes foggy or milky after spraying.

Cause
A. Fast drying solvent or unbalance of thinner could make moisture getting into the film.
B. Air from spray gun and thinner drop the temperature of the substrate by the dew point and make moisture getting into the film.
C. Applying on a humid day.
D. Using a lot of hydrophilic solvent.

Repair
For lacquer types, add 5~10% of retarder thinner(DR-2590R). Retarder thinner is recommended only for the final coating.

Prevention
A. Use slow or retarder thinner, or proper thinner for the temperature.
B. Lower the air pressure during spraying to minimize the substrate temperature falling.
C. Avoid the application on a humid day.

Circles with raised edges or whitish spots resembling water droplets appear on the surface of the paint film.

Cause
Getting wet or rained before the paint film thoroughly dried.

Repair
A. For severe spots, sand and refinish.
B. For light spots, polish a panel using #2500 compound (1st step) and #7000 compound (2nd step).

Prevention
A. Avoid the water or rain until the paint film is thoroughly dried. (more than one day)
B. Wash a car in shades and wipe it clearly.

Spotted or striped appearance in a metallic color.

Cause
A. Using the metallic paint with slow thinner or applying it too thick.
B. Unskilled application technique of worker.
C. Applying clearcoat too thin or too quickly after metallic color coating.

Repair
A. Clear the basecoat applied part and apply higher pressure mist coat.
B. Sand the dried basecoat film and refinish it.

Prevention
A. Do not apply excessively thick.
B. Follow the standard ratio of thinner.
C. Improve the application skill.

Phenomenon
The paint film is soft to the touch, and will fingerprint or waterspot within hours/days after application.

Cause
A. Excessive film thickness.
B. Low temperature and high humidity.
C. Adding too much or little hardener to the paint.
D. Using too much retarder thinner.
E. Poor condition of the previous paint film.

Repair
A. Drying the film by heat.
B. If hardener is not added, remove the film and refinish.

Prevention
A. Using the designated thinner.
B. Follow the standard film thickness.
C. Follow the standard ratio of hardener.

Cracks or lines of various lengths and widths in the topcoat finish often resembling the cracking of dried mud.

Cause
A. Excessive film thickness of the undercoat and/or topcoat
B. Paint ingredients not thoroughly stirred or agitated
C. Insufficient flash time between coats
D. Using the paint with low crack resistance

Repair
Remove all cracked paint film and refinish.

Prevention
A. Take sufficient flash time between coats.
B. Follow the standard film thickness.
C. Select the paint carefully.