Roofing and surfacing material and method

Claim 1

A water-impermeable, weather resistant, light-weight structural surface for use in static structures, consisting of: a. a structural base surface comprising a supported material selected from the group consisting of wood, metal, and concrete; b. a layer of water-impermeable epoxy adhesive utilizing a water-activable curing agent, having a thickness of from about one-eighth to one-half inches disposed adjacent to said base surface and being directly adhered thereto, said adhesive layer having been applied in a flowable condition whereby a generally smooth top surface of the adhesive layer is produced; c. a light-weight electrical heating grid incorporated into said water-impermeable layer; and d. an upper layer of indoor-outdoor carpeting adhered to the top surface of said water-impermeable adhesive layer, said upper layer comprising a low-nap, non-woven, relatively thick web of polyolefin polymer or copolymer fibers having a thickness such as to provide a web with a weight of from about 0.05 to 0.75 pounds per square foot, and functioning as a relatively thick protective covering layer for said adhesive layer.