Window Cleaning Frequency
Experts recommend that windows be professionally cleaned a minimum of twice per year. In northern areas, these cleanings usually take place during the spring and fall when screens and storm windows are exchanged for the seasons. In some areas of northern Virginia, the high mineral content of the water may cause stubborn hard water spots on windows, and the homeowner may wish to contract for more frequent cleanings. Many window cleaning services also offer other types of window services, including cleaning and repair of screens and window caulking.