Specifications include, but are not limited to: Main Roof Existing Roof Construction Deck: Concrete Insulation: 2 layers of polyiso. insulation with perlite insulation on top Membrane: 2 ply modified bitumen adhered in adhesive Surfacing: Granular Slope: 1/8” per foot from sides to roof drains in middle of roof. Demolition and Roof Preparation • Remove existing modified bitumen roof and insulation down to the concrete deck. • Remove dust, dirt, and debris from roof surface. • Remove all base flashing from walls and curbs • Remove existing sheet metal items including flashing, pitch pans, sleeves and jacks. Metal wall counter flashing and existing metal edge are not to be removed. • Replace any rotten or deteriorated wood nailers as necessary on a unit cost basis. • Remove any abandoned equipment or penetrations. • School to furnish electrical contractor technician to disconnect and reconnect conduct lines to enable install new flashings. Roof Insulation • Over the clean existing deck, adhered a layer of 3” polyiso. insulation, 4’ X 4’ board size, in foam ribbons adhesive at 6” oc. • As indicated in Roof Plan, adhere ¼”/ft. tapered Polyiso. insulation with foam adhesive ribbon 6” oc.to form crickets to flow water to roof drains. Roof Membrane • Install white 80 mil. reinforced TPO membrane fully adhered roof system per specifications with sprayed adhesive. No VOC bonding adhesive. • On Penthouse roof, install fleece back 80 mil reinforced TPO membrane adhered to existing roof surface in ribbons of form adhesive 6” oc. • Install 60 mil TPO membrane base flashings fully adhered to walls & curbs with sprayed adhesive per detail drawings and manufacturer’s details. • At metal edge, apply TPO flashing tape to flange and membrane. • At metal flashing in contact with membrane, flash metal flange with TPO flashing tape adhered to flange and membrane. • Install prefabricated flashing pans and pourable sealer around roof penetrations that cannot be wrapped with TPO membrane or prefabricated boots. • At any abandoned curbs with rusted metal cover, install 5/8” CDX exterior grade plywood over opening and fasten to curb 12” oc. Cover plywood with fully adhered 60 mil TPO membrane with welded seams on sides of curb.