Painters are professionals who apply color to walls and furniture. They may paint interior walls, but most often they work on outdoor walls. Although some paint is water-based, most modern paints are oil-based. It is up to the painter to know what type of paint is best for the surfaces to be painted. Some painters prefer to use certain types of paint over others, but there are ways that a painter can determine which type of paint is best for the job.

 to mix the paints they use for their jobs. If the paints are too thin, they will not be able to use the paint quickly enough to cover the surfaces they are working on. If they are too thin, the paint could chip off. On the other hand, if the paints are too thick, the paint will not penetrate the surface as deeply as needed. Therefore, if painters are using thinner paints, they might be able to cover the surfaces more easily, but if they are using thick paint, the finished product will probably not look quite right.

Painters should also know how to apply paint to the walls and exteriors of a home. Most importantly, painters need to know how to mix the proper amount of paint. For example, if the painter needs to cover an interior wall to make the room look larger, he or she should only add about two or three spoons of paint for each square foot of wall. This is one measure of how much paint a painter needs to apply to a specific area. Sometimes, a homeowner needs to add more than this to get the job done properly.