Abstract: A composite recovery board (10, 20, 30) comprises a foam core (11) having lower (12) and upper (13) surfaces, wherein the foam core is selected from the group consisting of polyisocyanurate and polyurethane materials and mixtures thereof; and a filler within said foam core selected from the group consisting of rubber-tire vents, EPDM scrap material, plastic chips, polyurethane scrap, polyisocyanurate scrap, scrap rubber from recycled tires, wood chips, fiberglass strands and mixtures thereof. A method of re-roofing a roof comprising applying composite boards (10, 20, 30) of the present invention to a roof deck and applying a weather protective layer over the composite boards. A continuous method of making composite recovery boards (10) of the present invention comprises is also provided.

Abstract: An improved plate/fastener assembly includes an elongated fastener having a first set of threads adjacent the tip and a second set of threads adjacent the head. The first set of threads has a diameter smaller than that of the second. The fastener is employed with a plate which includes a stress plate portion having a hub extending downwardly therefrom. The hub includes an opening extending therethrough which receives the fastener. The first set of threads will engage with a metal roof deck to hold the fastener in place, while the second set of threads engages with the plate to hold the plate in place. The lower face of the plate includes a plurality of ribs adapted to engage with an insulation material to prevent rotation of the plate. Each of the ribs presents a concave configuration in the direction of rotation of the plate to disengage same from the fastener.

Abstract: A laminate providing a high strength, low flammability improved moisture vapor barrier for use in producing improved construction panels, to the construction panels which comprise a polyurethane foam interior having a top and a bottom laminate skin bonded thereto, and to the process for producing the construction panels. The laminate is composed of an outer metal skin, e.g., aluminum foil, a scrim and an adhesive tie-coat attaching the scrim to the outer skin. The adhesive tie-coat is carefully selected so that it will react during manufacture of the polyurethane foam to produce the panel and tightly bond the foam to the foil. The tie-coat is preferably a high molecular weight, linear epoxy resin adhesive having free hydroxyl groups which react with the isocyanate, or isocyanurate, used in producing the polyurethane foam.