What is sealer used for?

• A. To create a uniform surface before topcoat
• B. To provide color
• C. To fill large scratches
• D. To increase drying time

Answer: (A)

Sealer is used to create a uniform, clean foundation for the topcoat. It seals the surface and blocks porosity from bare metal or fresh body filler, so the color coats lay down evenly and adhere well. By providing a consistent base, sealer reduces variations in color and finish across repaired areas, helping the final paint look smooth and uniform. It doesn’t add color itself, and it isn’t meant to fill large scratches—that’s what filler and bodywork are for. It also isn’t intended to slow drying; it’s applied to promote consistent film formation and adhesion when used as directed.