Why should damaged paint be removed before repair?

• A. To expose clean metal for proper repair and adhesion
• B. To save time during repair
• C. To prevent rust
• D. To improve color match

Answer: (A)

Substrate preparation is essential for proper adhesion of repair materials. Damaged paint should be removed to expose clean metal so the repair area can be properly cleaned and the filler, primer, and topcoat can grip the surface. Contaminants from paint layers and oxidation hinder bonding, which can lead to peeling or failure of the repair. Byrevealing bare metal, you also spot any hidden corrosion or damage that must be addressed before applying filler. This makes the repair durable and the finish stand up to the next steps. While rust prevention and color matching matter later in the process, the fundamental reason for removing damaged paint is to provide a clean, properly prepared surface that allows adhesion of the repair materials.