Specifications include, but are not limited to: 1. Demolition of the existing roof membrane, flashing, insulations, deteriorated underlayments, sheet metal trim where specified to the structural concrete deck. The contractor is to salvage reusable materials as required by the specifications and drawings. 2. Remove and properly dispose of existing ACM (asbestos containing materials) in accordance with state (GDNR), local, federal and EPA guidelines. Dispose of materials at a dumpsite approved to handle hazardous materials. 3. Remove and replace existing roof drain collars, clamping rings, and strainers 4. Route out all existing roof drain lines 5. Cover the existing prepared roof deck with 87 mil torch grade SBS modified membrane that is fully bonded to the surface, roll or broom as required. Installation of secondary flashings are required; the flashing is to be 1-inch higher than the projected height of the new roof insulation system. 6. Install two layers of 1.8-inch thick polyisocyanurate insulation that is set in adhesives. Install 4-foot sumps on all sides of roof drains. Attachment of the system is to meet ASCE 7 requirements for buildings of this height, exposure, and geographic location. Decrease adhesive bead spacing as required at corners and perimeters. 7. Install positive slope crickets and saddles as required to facilitate drainage, set in approved adhesives. 8. Install a new cover board in an approved adhesive. The adhesive is to be as approved by roof system manufacturer and meet wind up-lift requirements.