Molded siding member

A molded siding member for use on buildings composed of

• a plurality of vertically extending panels connected side by side by intervening webs to simulate a horizontal course of shingles and having exterior and interior surfaces, the said webs being countersunk below the exterior surfaces to simulate spaces between adjacent shingles, each course being positionable with its lower margin overlapping the upper margin of the next lower course,
• the member being formed along its upper margin with a plurality of nail receiving recesses molded into the exterior surface to form widely separated bosses protruding inwardly a predetermined distance from the interior surface of the siding member and its upper margin to engage the side of the building and thereby provide a predetermined spacing of the said upper margin outwardly from the side of the building when the member is nailed in place,
• the member being formed with protruding portions extending downwardly below its lower margin and inwardly of the web surface to form locking tongues adapted to be inserted in the opening afforded by said predetermined spacing between the building and the upper margin of the next lower member to lock the lower margin of the upper member in place, the said tongues originating above the said lower margin and being separated therefrom to accommodate the said overlap.