High-quality commercial contractors don’t come cheap because they know all the tricks of the trade. A trick the pros use is to ensure they pick a powerful primer to add before applying the paint. Most people think primers are just diluted paint, when in reality they are created to establish a solid and even base, ensure the top coats of paint are smoothly applied, and guarantee that the paint bonds securely to the surface. Professionals also choose alkyd or alcohol primers because they cover virtually anything.