Abstract: A building structure having a plurality of alternating siding boards and corner blocks that simulate a hewn log building with dovetail notches and the method of application are disclosed. The corner blocks and siding boards are preformed to fit snugly together at the structure's corner and are attached by wood splines and exterior wood glue. A three legged fastener or “h” clip attaches the siding units to the sheathing in the chink joint. The siding can be speedily erected at the site with a minimum of field cutting on either new or existing buildings.