What is the first step you should take before applying a finish?

Before applying a finish, cleaning the surface with a water and detergent wash is essential. This step ensures that any contaminants, such as dirt, grease, or other residues, are effectively removed from the surface, providing a clean substrate for the finish to adhere to properly.

A thorough cleaning helps to prevent issues such as poor adhesion, bubbling, or uneven application of the finish, which can compromise the overall quality and durability of the paint job. By preparing the surface in this manner, you set a solid foundation for any subsequent steps, contributing to a more successful and aesthetically pleasing outcome.

Other options focus on different aspects of the preparation process but do not take precedence over initial cleaning. For example, while inspecting for imperfections is crucial, you should first ensure the surface is clean to accurately assess any flaws. Solvent washes and primer application are also important, but they occur after the initial cleaning as part of the overall surface preparation process.