Abstract: A siding panel and two methods of installing a wall covering made from injection molded materials and having positioning relief to facilitate installation. The siding panel includes a plurality of decorative elements formed with a top edge disposed above a row of decorative elements. Apertures are formed in the panel below the top edge and on the rear side of the siding panel. The panel includes a plurality of tabs, each narrower than the apertures to provide the positioning relief, which depend downward from the rear side, with the tabs being spaced in intervals corresponding to the apertures. The decorative elements are arranged in upper and lower rows which are offset to define relatively discontinuous side edges. The panel is formed from polypropylene, and the decorative elements comprise a simulated wood grain finish to be used as cedar shake shingles. The tab is about one half the width of each aperture, with the apertures being disposed through the siding panel at an angle extending downward.