I hope these types of window valance can give you some inspirations to bring in your room interior décor in your home. You must experiment to all types to find out the valance which is match with your window treatment. This valance type is formed a triangle and hang the curtains. For materials used usually use complicated ingredients one of which is velvet and silk. Then the valance fabric on this type also has tassels or fringes. Ideas & Inspirations.