초록 ▼

A built-up roofing structure (10) is provided which is characterized by low dead weight, enhanced fire retardancy, and ease of construction. The structure (10) includes a lowermost deck (12) with integrated, insulative sections (24) applied thereover and adhered in place by a novel fire retardant ma

A built-up roofing structure (10) is provided which is characterized by low dead weight, enhanced fire retardancy, and ease of construction. The structure (10) includes a lowermost deck (12) with integrated, insulative sections (24) applied thereover and adhered in place by a novel fire retardant mastic (27); the sections (24) each include a preformed expanded foam layer (14) covered by a roofing board (16). A modified bitumen membrane (18) is applied over and completes the roofing structure (10). The improved mastic includes asphalt, low volatility mineral spirits and a fire retardant additive such as an intumescent glass, and particularly a borosilicate glass. The mastic is advantageously applied using a spreader apparatus (30) having an elongated, tubular, apertured mastic delivery bar (32, 58) and spreading means (46, 62) with a plurality of separate, spaced apart, lightweight trailing spreader chains (48). An alternative embodiment is provided in the form of an integrated roofing section (24a) which is constructed with a solvent-free, water-based emulsion (68) used to bind an unfaced roof board (16a) to a foam layer (14a). The emulsion (68) can also be used as a substitute for hot asphalt in the construction of roofing upon metal decks.

대표청구항 ▼

A roof assembly comprising: a metal deck presenting an undulating top surface; a layer of expanded, synthetic resin foam situated atop the deck, said foam layer presenting an undulating lower surface adjacent and substantially complemental with said deck surface and an outer surface remote from said

A roof assembly comprising: a metal deck presenting an undulating top surface; a layer of expanded, synthetic resin foam situated atop the deck, said foam layer presenting an undulating lower surface adjacent and substantially complemental with said deck surface and an outer surface remote from said deck, said foam layer lower surface being closely adjacent said deck top surface throughout substantially the entirety of the deck top surface; a layer of weather-resistant material having inner and outer surfaces; a first layer of adhesive between said foam layer outer surface and said layer of material for binding said layer of material to said foam layer; and means for adhering said foam layer to the top surface of said deck including a second layer of adhesive between the lower surface of said foam layer and said deck top surface.