Painters typically do the following: Cover floors, furniture, and trim with drop cloths, tarps, and masking tape to protect surfaces Remove and replace pictures and outlet and switch covers Install scaffolding and raise ladders Fill holes and cracks with putty or plaster Prepare surfaces by scraping, wire brushing, or sanding to a smooth finish Calculate the size of the area to be painted and the amount of paint needed for the area Apply primers or sealers so the paint will stick to the surface Apply paint or other finishes, using hand brushes, rollers, or sprayers