Specifications include, but are not limited to: Flat Roof Specifications #1C, 1D, 1E: Coordinate operations with representatives to minimize any facility and personal disruption. Existing PVC Roof assembly will be removed down to steel deck and disposed of.; • The clean decks will be covered with two alternating layers of 2.6” polyisocyanurate Insulation having combined LTTR of approximately 30 fastened to deck per manufactured specs. ½ high density poly- is cyanurate cover board installed over insulation.; • Assembly would be covered with .060 black EPDM membrane, adhered to surface and seams bonded with pressure sensitive seam tape to create monolithic membrane.; • Roof drains would be flashed with EPDM grade flashing new clamp rings 2 strainer, with 4 x4 sump, 1.5 inches deep at each drain.; • All curb based would be flashed will adhered .60 EPDM membrane plus 24-gauge counter flashing.; • All other penetrations to be flashed as required EPDM flashing material.; Roof 1F: • Existing smooth surface built up system removed down to concrete deck and disposed of.; • Exposed deck to be covered with vapor barrier membrane and set in primer to manufactured specs.; • The installed vapor barrier would be covered with 1/8” per foot polyisocyanurate insulation assembly having and average LTTR of 30. The insulation assembly would be fastened to the upper barrier below the low-rise foam adhesive per manufacturer specs.; • The insulation assembly would be covered with .060 black EPDM membrane. The membrane would be adhered to the insulation surface below, with all the seams bonded together with pressure sensitive seam tape to create a monolithic membrane.; • Roof drains to be replaced with Zurn cast iron bowls, clamping rings and strainers. Drains to be flashed with newly applied EPDM membrane (plumbing by another).; Roof 1H: Standing Seam Metal: • Roof G will be protected from any debris from Roof 1H apron removal of existing shingles.; • Asphalt shingles to be removed down to the wood deck and properly disposed.; • Wood deck to be covered with ½ inch high density poly iscoyanurate cover board, anchored to the wood deck with screws per manufacturers specs.; • The sub straight would be covered with 60 mil PVC membrane as manufactured by Sarafil. This adhered to the cover board with bonding adhesive.; • Roof hip covered with custom shop fabricated 24-gauge hip cap.
