Static structures (e.g. – buildings) – With synthetic resinous component – Foam
Patent
1994-02-08
1996-07-30
Smith, Creighton
Static structures (e.g., buildings)
With synthetic resinous component
Foam
52408, 5274611, E04C 100
Patent
active
055400221
ABSTRACT:
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.
REFERENCES:
patent: 4063395 (1977-12-01), Stewart et al.
patent: 4180535 (1980-02-01), Morton
patent: 4450663 (1984-05-01), Watkins
patent: 4707961 (1987-11-01), Nunley et al.
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