Abstract: A roof surfacing having increased reflectance comprises a roof membrane with a bituminous layer and a layer of generally flat particles placed in a generally overlapping geometry so as to substantially cover the bituminous layer. The composition of the particles includes a polymer and a filler. The polymer may be polyvinyl acetate (PVA), polyvinyl chloride (PVC), polyester, acrylic, polymethylmethacrylate, or methylmethacrylate (MMA). The filler may be calcium carbonate, dolomite, or barium sulfate. The particles may further include a pigment, fire retardant, and/or anti-microbial agent. A method of creating a roof surfacing having increased reflectance includes creating a thin sheet of material having increased reflectance, dividing that sheet into multiple particles, feeding the particles through a hopper onto a curved directional plate, and placing the particles on a roof membrane having a molten bituminous layer in a generally horizontal direction to create an overlapping, scaled appearance.

Abstract: A roof structure includes a lightweight insulating concrete layer, a waterproof membrane overlying the concrete layer, and a plurality of adhesive pellets that are at least partially embedded in the concrete layer. At least some of the adhesive pellets are in contact with an adhesive layer of the waterproof membrane so that the waterproof membrane and the concrete layer are both adhesively bonded together.

Abstract: A lightweight insulating concrete composition includes a cementitious forming material and a lightweight aggregate combination of expanded vermiculite and expanded perlite, the weight ratio of one to the other not exceeding about 2:1. Preferably, the composition is about 4 parts by weight cementitious forming material and about 1 part by weight lightweight aggregate. The cementitious forming material may be a hydraulic binder and accelerator combination, and may be Portland cement, plaster of Paris, and terra alba, in a weight ratio of about 5:4:1, or calcium aluminate cement, and plaster of Paris, in a weight ratio of about 11:5. The composition may further include an air entraining admixture in an amount between about 0.5 and about 2.0 percent of the total weight of the mixture, where neutralized vinsol resin and alpha olefin sulfonate are acceptable, and a surfactant in an amount between about 0.3 and about 1.

Abstract: A device for applying a fluid coating, including a feed tube assembly having a plurality of feed tubes and valves for controlling the flow of fluid through each of the tubes, an extrusion tube coupled to each feed tube, and a fluid spreader coupled to the spreader tube.

Abstract: A composite roofing system in which a layer of polystyrene or polyurethane foam insulation board is encased in layers of lightweight insulating concrete and the surface of the foam insulation board is roughened to strengthen the interfacial bond with the surrounding layers of concrete and provide increased resistance to wind uplift, seismic activity, and degradation of the roofing system caused by vertical loads. Moisture which might otherwise become entrapped in the roofing system by the impermeable insulation board is ventilated out of the system by a combination of openings through the insulation board which permit the migration of moisture between the layers of concrete, and a plurality of lateral slots cut in the insulation board to permit further migration of moisture out of the system.