Unlike exterior painting, where the paint is subject to exposure of the elements, interior painting varies from room to room. but when done with the proper paint and prep work, a paint job can often last from 5 to 10 years. However, the most “lived in” spaces will require more frequent paint updates. Rooms like Children’s bedrooms, high high traffic areas, or rooms with a higher humidity might need to be repainted every few years, while adult bedrooms, or areas with less traffic might last longer. Also refreshing for colour change or other esthetic reasons might cause you to re paint your interior more often!