Red Seal Painter and Decorator Practice Exam

Which of the following is not a benefit of sealants?

1. Increase color longevity

2. Enhance surface shine

3. Reduce paint thickness

4. Prevent moisture penetration

The correct answer is: Reduce paint thickness

The choice that identifies a lack of benefit from sealants is the reduction of paint thickness. Sealants are typically applied to surfaces before painting to create a protective barrier, enhance adhesion, and prolong the life of the coating. They serve purposes such as increasing color longevity, enhancing surface shine, and preventing moisture penetration, all of which are essential benefits that improve the performance and appearance of the paint job. Reducing paint thickness is not typically a function of sealants; in fact, sealants can sometimes be seen as an additional layer on the surface that might require the paint to be applied in a similar or sometimes slightly thicker manner to adhere effectively. Instead, sealants work to improve the overall durability and aesthetics of the painted surface without compromising thickness. Therefore, the assertion that sealants reduce paint thickness stands out as not aligning with the primary benefits associated with their use.