Abstract: An adhesive for securing a roofing system to a substrate includes a magnesium oxide matrix having dispersed therethrough a plurality of particles or fibers. The dispersant coating is operative to suppress electrostatic attraction between the particles or fibers. An elastomeric overlayer is placed in interfacial contact with the magnesium oxide matrix containing the plurality of particles or fibers prior to set of the matrix so as to form a bond therebetween. A roofing system is detailed that includes an intermediate layer having an asphaltic layer that terminates in an asphaltic surface and an exposed non-asphaltic fibrous surface. An elastomeric outer weatherproof coating is applied in adhesive contact with the fibrous surface resulting in a weatherproof roofing system. The elastomeric outer weatherproof coating is amenable to application with a sprayer or roller with the non-asphaltic fibrous surface absorptive of such a liquid coating.

Abstract: A roofing system includes an insulation layer and an exposed fiber surface of a sheet. A cement layer is placed intermediate therebetween. An elastomeric outer weatherproof coating overlies the sheet. A process for applying to a roofing system is provided that includes applying to a roofing substrate an insulation layer having an upper surface. Wet cement is applied on the upper surface of the insulation layer. An exposed fiber surface of a sheet is placed in contact cement. The sheet is then either directly or with intermediate layers therebetween overlayered with an elastomeric weatherproof coating. An insulation board is also provided that includes an exposed fiber backing. The exposed fiber backing accepts an overlayer of elastomer, cement, or mastic.

Abstract: A lightweight cementitious composite material includes expanded synthetic polymer particulate having a particle size of between 0.0625 and 0.5 inches. A dispersant coating on said particulate suppresses electrostatic attraction between particulate particles. A matrix surrounds the particulate and is present from 0.25 to 1 pound per gallon of dispersant coated particulate.

Abstract: The present invention provides an improved composite material structure having large portions of additive material aligned over a substantial width of a material structure and occupying a larger percentage of the structure volume. The material structure includes a resilient substrate layer or conventional decking having a plurality of elongated rods arranged on a surface of the substrate layer to form at least one rod layer. The spaces between rods are filled with a slurry material which is allowed to set causing the component elements to bond together to form a lightweight durable and high strength composite material structure.