Beyond the practical purpose of creating privacy and blocking out light, a curtain creates an opportunity to enrich the feeling of a room. Whether dressing one window or a series of windows, there’s a style of curtain fabric to meet your needs. A silk curtain may let in wisps of light and flutter gently in the breeze. The same effect can be achieved with sheer, voile or voile curtains. If you want to keep the sun at bay, blackout curtains are a must. If a linen curtain is lined, for instance, you can have a relaxed, chic look teamed with insulating properties. Window treatments, or drapery, add softness to a room by adding another layer of interest.