Specifications include, but are not limited to: (1) Remove and properly dispose of existing surfacing (gravel), roof membrane and flashings, insulation board, etc. to prepare for the installation of a new roof membrane system. (2) Remove and properly dispose of abandoned pitch pans near the southeast corner of Roof Area A, as indicated on drawings. (3) Remove and properly dispose of existing flagpole and steel flagpole mounting bracket on the north parapet wall, as indicated on drawings. Properly repair holes in concrete wall panels from bracket mounting bolts. (4) Raise existing gas line and/or HVAC condensate lines, as necessary, for the installation of the new roof membrane system. (5) Raise existing exhaust fan curbs and/or HVAC unit curbs to allow for a minimum of 8 inches in height of base flashing membrane at each location. (6) Install two layers of 2.2” flat-stock polyisocyanurate insulation, loose laid. (7) Install ½” flat-stock recovery board over flat-stock insulation, mechanically fasten to existing steel deck. (8) Install one-ply modified bitumen base sheet membrane, torch apply. (9) Install fire-rated, granule-surfaced modified bitumen cool roof cap sheet membrane, torch apply. (10)Install fire-rated, granule-surfaced modified bitumen base flashing membrane, torch apply. (11)Install reinforced liquid-applied flashing at pipe and other circular penetrations. (12)Install new pre-finished sheet metal copings, counter-flashings, penetration flashings, through-wall scuppers and other sheet metal components. (13)Install new treated wood pipe/conduit supports with membrane protection pads. (14)Install new modified bitumen walkway pads, where indicated on drawings. (15)Remove corrosion from, properly prepare and apply new paint to all roof-top appurtenances and conduits. 1. Install polyisocyanurate flute-filler insulation board, loose lay over existing metal Rpanel roof. 2. Install two layers of 2.2” flat-stock polyisocyanurate insulation board, loose lay over flute-filler insulation. 3. Install 1/2” flat-stock recovery board, mechanically fasten to existing metal R-panel roof. 4. Install one-ply modified bitumen base sheet membrane, torch apply. 5. Install fire-rated, granule-surfaced modified bitumen cool roof cap sheet membrane, torch apply. 6. Install fire-rated, granule-surfaced modified bitumen base and wall flashing membrane, torch apply. 7. Install new pre-finished sheet metal copings, counter-flashings, gutters, downspouts and other sheet metal components.
