Solvent Popping

Solvent Popping: Small bubbles form in the paint layer and may burst. This often occurs on humid or hot days when moisture penetrates the paint.

Description:

Solvent popping is primarily caused by moisture entering the paint surface or by improper cleaning of the substrate.

Cause:

1. Incorrect cleaning or preparation of the substrate. For example, if gasoline is used as a cleaner for filler, it may leave water-soluble impurities behind.
2. Insufficient evaporation time before the next coat or excessively thick filler layer preventing complete solvent evaporation.
3. Too fast-evaporating thinner or paint with too high viscosity.
4. Poor-quality thinner that prevents proper drying of the filler. When the topcoat is applied and heated, the solvent evaporates and causes bubbles.
5. Insufficient drying, sudden heating, or overly rapid surface drying.
6. Excessively high drying temperature.
7. Too high spray pressure or incorrect method when applying filler.

Repair:

1. Resand the surface to remove the bubbles and repaint.

Recommended products to prevent and correct possible issues:

• Abrasives and accessories

• Paint spray guns
   

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