In addition, paints and other sealers protect outside walls from wear caused by exposure to the weather. Although some people do both painting and paperhanging, each requires different skills.
Painters apply paint, stain, varnish, and other finishes to buildings and other structures.
They choose the right paint or finish for the surface to be covered, taking into account customers' wishes, durability, ease of handling, and method of application. They first prepare the surfaces to be covered so the paint will adhere properly. This may require removing the old coat by stripping, sanding, wire brushing, burning, or water and abrasive blasting. Painters also may wash walls and trim to remove dirt and grease, fill nail holes and cracks, sandpaper rough spots, and brush off dust. On new surfaces, they apply a primer or sealer to prepare them for the finish coat.