Understanding Paint Cissing: Causes, Solutions, and Recommended Products

Paint cissing, also known as cratering, is a common issue that can mar the finish of a paint job. It manifests as small, crater-like holes or indentations in the paint surface, ranging from pinholes to larger craters. Understanding the causes and solutions for cissing can help you achieve a smooth, flawless finish.

Causes of Paint Cissing

1. Surface Contamination: The most frequent cause of cissing is contamination of the surface to be painted. This can include:
   • Silicone: Even minute traces of silicone from polishes or other sources can cause cissing¹.
   • Grease, Oil, and Wax: These substances prevent the paint from adhering properly².
   • Dust and Dirt: Any particles on the surface can disrupt the paint film³.
2. Incompatible Paint Layers: Applying water-thinned paints over glossy or semi-gloss oil-based coatings can lead to cissing⁴.
3. Environmental Factors: Contaminants in the air, such as spray dust or fumes, can settle on the surface and cause cissing².

Solutions to Paint Cissing

1. Surface Preparation:
   • Cleaning: Thoroughly clean the surface with a wax and grease remover. Ensure that cleaning solvents do not dry on the surface; remove them with a clean, dry cloth².
   • Sanding: Lightly sand the surface to remove any shine and ensure better adhesion of the new paint⁵.
   • Dust Removal: Always remove all sanding dust before painting².
2. Proper Painting Techniques:
   • Use Recommended Materials: Always use the recommended primers and paints for your specific project².
   • Maintain Equipment: Ensure that your spray gun and compressed air equipment are properly maintained to avoid contamination².
   • Ventilation: Make sure the painting area is well-ventilated to prevent the accumulation of fumes and dust².
3. Rectification:
   • Repainting: If cissing occurs, remove the paint completely from the affected area and repaint, following the recommended preparation procedures².
   • Anti-Cissing Additives: In extreme cases, consult the paint manufacturer about using anti-cissing additives².

Recommended Products

1. Wax and Grease Removers:
   • Dulux Pre-Paint Cleaner: Effective for removing contaminants from surfaces before painting¹.
   • PPG Wax and Grease Remover: A reliable product for ensuring a clean surface².
2. Primers:
   • Zinsser Bulls Eye 1-2-3 Primer: Suitable for a variety of surfaces and helps in preventing cissing⁴.
   • Dulux 1Step Primer, Sealer & Undercoat: Provides excellent adhesion and prepares the surface for painting¹.
3. Anti-Cissing Additives:
   • PPG Anti-Cissing Additive: Consult with PPG for the appropriate use of this additive in extreme cases².

By understanding the causes and implementing these solutions, you can effectively prevent and resolve paint cissing, ensuring a smooth and professional finish for your projects.

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