Abstract: A two-piece fastener assembly for securing thermoplastic roof membranes to an underlying roof deck having: a stress plate and a fastener. The stress plate consists of a pre-fabricated metal layer and a thermoplastic layer which are integral with each other. The stress plate has top having three flat surfaces and two circumferential portions, forming ridges or protuberances connecting the flat surfaces.

Abstract: The present invention is a method of securing a first thermoplastic membrane to a second thermoplastic membrane and securing these membranes to an underlying deck. The steps of the method comprise providing a composite fastener, placing the first thermoplastic membrane on the deck, placing the composite fastener on a marginal portion of the first thermoplastic membrane, driving the composite fastener through the first thermoplastic membrane into the deck to fasten it, placing the second thermoplastic membrane to overlap the composite fastener and the marginal portion of the first thermoplastic membrane, and lastly welding the membranes to the composite fastener and each other in a substantially continuous seam.

Abstract: A top coating composition useful for building materials products, especially roofing surfaces, is provided. The top coating composition provides durable exterior protection to surfaces that it applied to, and it has intumescent and reflective properties. The top coating composition includes a mixture of a polymeric binder, heat expandable graphite particles, a polymeric carrier and a pigment. The pigment is present in the coating composition in amount that is capable of providing a coating that has an initial energy efficiency rating greater than or equal to 0.65 for a low-sloped roof, or an initial energy efficiency greater than or equal to 0.25 for a steep-sloped roof. The coating composition has a solids content from about 50-75% of which 1-10 wt. % is expandable graphite particles.

Abstract: A coating composition useful for building materials products, especially roofing surfaces, is provided. The coating composition provides durable exterior protection to surfaces that it applied to, and it has intumescent and reflective properties. The coating composition includes a mixture of a polymeric binder, at least one intumescent agent, a polymeric carrier and a pigment. The pigment is present in the coating composition in amount that is capable of providing a coating that has an initial energy efficiency rating greater than or equal to 0.65 for a low-sloped roof, or an initial energy efficiency greater than or equal to 0.25 for a steep-sloped roof. The coating composition has a solids content from about 30-80% of which 0.5-35 wt. % is the intumescent agent.

Abstract: A two-piece fastener assembly for securing thermoplastic roof membranes to an underlying roof deck having: a metal stress plate coated with a thermoplastic coating on its top surface; an opening in the center portion of the stress plate; and a fastener positioned in the opening of the stress plate for securing the stress plate and one thermoplastic roof membrane to the underlying roof deck.

Abstract: A two-piece fastener plate and fastener assembly and method of securing a roof membrane to a roof deck wherein the fastener is reinforced with concentric dome-shaped ribs separated by concentric depressions or dimples. The concentric depressions or dimples are provided with multiple triple or quadruple barbs for gripping the roof membrane when the fastener secures the roof membrane to the roof deck.

Abstract: Two-piece fastener assembly for securing thermoplastic roof membranes to an underlying roof deck having: a batten bar coated with a thermoplastic coating on its top surface; a plurality of openings in the batten bar; and fasteners positioned in the plurality of openings for securing the batten bar and one thermoplastic roof membrane to the underlying roof deck.

Abstract: A cement composition contains 35-85% by weight of a cement, 3-15% by weight of a clay, 1-50% by weight of an aggregate and/or a fibrous material, and 0.2-5% by weight of a high efficiency retarder. A benefit of the present invention is that equipment used to apply cement compositions need not be cleaned every night when used on a construction site.