Painting can be a strenuous task whether it is in a small office or a large space. It is for this reason that many people don't apply multiple coats of paint. This, however, can leave you with issues such as visible marks and smears on the painted surface. Therefore, to eliminate these cosmetic issues, it is absolutely essential to apply at least least two coats of paint. Regardless of the surface that you are painting; applying a number of coats is essential because it not only covers smears, but each extra coat strengthens the color.