Before hanging, examine the back of the painting to ensure that the hanging hardware is strong and secure. If the painting is framed, the hardware should be attached to the back of the frame, not to the stretcher or strainer. These types of hangers are secured to the wooden frame with two to four screws. Moving and hanging unframed or large paintings safely may require the services of professional art handlers, who may be reached by calling a local museum, historical society, or reputable art gallery. After carefully examining your paintings for loose or flaking paint, dust them every four to six months.
Feather dusters can scratch paintings.
Never try to clean a painting yourself or use any liquid or commercial cleaners on a painted surface. Commercial preparations can cause irreparable damage to the fragile layers of a painting. Avoid using pesticides, foggers, air fresheners, or furniture sprays near artworks. Remove paintings from a room before painting, plastering, or steam cleaning carpets or wallpaper. Return the artworks only when the walls and floors are completely dry.