Abstract: A joiner clip for securing panels to a substrate is provided that includes a planar sheet of material that has a bottom portion terminating in outer edges. A pair of legs extends downward from the outer edges and terminating in a retaining shelf clip adapted to support a bottom edge of an inserted panel. Mounting holes form countersunk indents in the planar sheet that offsets the joiner clip from the substrate. A construction unit is also provided has such a joiner clip secured to a vertical stud substrate. At least inserted panel is supported in the retaining shelf clip of a first leg of the clip. A joint is readily formed between two inserted panels. Fasteners through an inserted panel secure the same to the clip and substrate. An additional siding strip is readily secured to the substrate below the pair of legs.

Abstract: A square or circular apron formed of plastic coated disk-like sheet metal or fiber-metal reinforced synthetic material is bonded to a circular ring gasket having a surface conforming to the upper mating surface of an existing roof drain flange. Reinforcing rib depressions are formed in the apron outer region. The apron extends for a major radial extent beyond the periphery of the drain flange and with the gasket is clamped to the drain flange via existing bolt holes in the drain using stainless steel or bronze replacement bolts. Screws clamp the apron and the underlying roof membrane, which may be bonded to the apron to form a water tight seal, to the deck. A metal clamp ring may be used to clamp the apron and gasket to the drain flange. Various embodiments are disclosed.

Abstract: A circular thin metal or thermoplastic disc stress plate has an annular stiffening rim and groove and a central opening. Three equilateral and symmetrically oriented elongated nail-like members depend from the plate at the rib and groove inclined in diverging relation relative to a vertical axis normal to and central the plate on a conical surface of revolution. The members extend radially beyond the perimeter of the stress plate projected onto the members forming an annular attachment region to a cementitious substrate significantly greater than the area subtended by the stress plate. Two or more than three members may be used in the alternative. The nail-like members have conical tips which may be any shape and blunt. The members preferably are circular cylinder steel, may be other transverse sectional shapes, and are driven individually or simultaneously into the substrate either through holes in the plate or penetrate the plate material by a power operated nail driving tool.