Low Gloss

How It Looks

Causes

• Use of an inappropriate thinner.
• Contamination of the surface before painting.
• High air pressure.
• Poor extraction and air flow of the spray booth that allows the dust generated by the paint itself to settle on the surface once it has begun to dry.
• The paint has dried in the presence of exhaust or industrial fumes.
• Poor drying conditions: Temperature too low, high humidity, lack of ventilation.
• Mixing ratios of hardener and thinner not according to manufacturer’s specification.
• Too many coats being applied.
• Not enough flash-off time between coats.
• A highly pigmented ground coat was not stirred enough before use.
• Use of inappropriate sandpaper grade.
• The ground coat was sanded before it was fully dry.
• Hardener expired or damaged (by humidity if the can is left open).

Preventive measures

• Use recommended thinner.
• Clean the surface well before painting.
• Use correct mixing ratios.
• Use correct pressure.
• Check air flow of the spray booth.
• Keep workshop warm in the winter.

Remedy

Allow the paint to fully dry and polish or respray.