1. Furnish, erect, maintain and remove all temporary protection measures. 2. Remove and dispose of the existing modified bitumen mineral surface roof membrane and saturated insulation board 3. Remove and reset the existing rooftop ventilation units and replace roof curbs with new 18 gauge minimum galvanized steel (G90) continuous welded seams and base plate and new Type 316 roof curb adapters. 4. Provide and install new continuous polyisocyanurate insulation system to provide an overall minimum R value of 13 across the entire roof surface. 5. Provide and install new flashings, drip edge and weather resistive coverings. 6. Install any sealants required by the system manufacturer. 7. Provide safety yellow textured TPO walkpads at locations indicated. 8. Provide safety yellow striping at locations indicated. 9. Provide new roof access ladder. 10. Remove existing roof drains and drainage piping and replace with new cast iron piping and insulation.
