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...http://www.google.com/patents/US5540022?utm_source=gb-gplus-sharePatent US5540022 - Fire retardant roofing adhesive and method of applying same
