Before applying a coating, why is it critical to check for surface imperfections?

Checking for surface imperfections before applying a coating is crucial because it directly affects the quality and uniformity of the finish. A smooth surface allows for even distribution of the coating material, preventing issues such as uneven thickness, runs, or sags that can occur if imperfections are present.

When imperfections like scratches, dirt, or oil are not addressed, they can interfere with the adhesion and performance of the coating. This can lead to problems such as peeling, blistering, or premature deterioration of the surface over time. A seamless surface preparation process ensures that the coating adheres properly and performs effectively, providing the desired protective and aesthetic qualities.

Thus, preparing the surface to eliminate imperfections is essential for achieving a smooth and professional-looking application.