Shoji Paper Windows- In traditional Japanese architecture, a shoji is a door, window or room divider made of translucent paper over a frame of wood or bamboo. While washi is the traditional paper, shoji can also be made of modern paper. Shoji doors are designed to slide open, and conserve space that would be required by a swinging door. Shoji also provide a form of insulation in winter, keeping drafts out. They are used in traditional houses in the washitsu or Japanese-style tatami room and almost all temples would have them in abundant use. Shoji paper needs to be changed regularly as they collect dust and become discolored over time. Normally this is done in late autumn each year. However, modern Japanese will only change the shoji paper when they become too discolored for comfort, or have holes appearing in them. It is a long, tedious process that most people wish to avoid.