What type of primer fills small scratches and imperfections?

• A. Primer surfacer
• B. Epoxy primer
• C. Acrylic primer
• D. Self-etching primer

Answer: (A)

Filling small scratches and imperfections is best done with a high-build primer designed to level the surface. Primer surfacer is formulated with fillers and higher solids content, so it builds up enough film thickness to smooth out micro-scratches, sanding marks, and minor flaws. This creates a uniform, ready-for-color surface before the basecoat is applied.

Epoxy primer focuses on corrosion resistance and adhesion to metal; it provides a solid base but isn’t meant to fill surface flaws to the same extent as a primer surfacer. Acrylic primer is versatile for adhesion and minor fill, but it doesn’t provide the same level of build and leveling as primer surfacer. Self-etching primer is intended to etch bare metal to promote adhesion and is not used for filling imperfections.