Abstract: A window valance kit assembled from paperboard stock configured for attaching a decorative material thereto to decorate a window. The window valance kit includes a valance body, decorative coverings and attachment tabs. The valance body is preferably constructed of a lightweight corrugated paperboard stock and includes multiple panels hingedly connected by fold lines. The multiple panels are folded along the fold lines to form the valance body. Decorative window coverings such as fabric, wallpaper, paint or lace are applied to the valance body to provide decoration, and the decorated valance is secured to a window or wall by paperboard securement tabs.