BUILDING PANEL

A building panel having inner and outer faces outlined by opposite ends and an upper and lower edges has opposite ends adapted to closely face the end of an adjacent panel in the same course. The outer face of the panel includes a lower segment of substantially greater surface area adapted for exposure and an upper portion of relatively smaller surface area adapted to underlie a lower portion of one or more panels in a next higher course laid in overlapping relation therewith. One of the ends of said panel includes an overlap end segment adapted to overlie an underlying end segment at the other end of an adjacent panel laid up end to end in the same course to form a ship lap end joint between the panels. The overlap end segment includes a marginal end portion of the outer face with an underside therebelow formed to slope from a minimum panel thickness adjacent the upper edge toward a maximum panel thickness adjacent the lower edge. The panel includes an underlying end segment at the other end containing a marginal end portion of the inner face with an outer side adapted to underlie a sloping underside of an adjacent panel and formed to slope from a maximum panel thickness adjacent the upper edge toward a minimum panel thickness adjacent the lower edge.