1. Existing Roof System Areas A, B, D – Built-up roof with gravel surfacing, 1-inch perlite, over 1-1/2-inch tapered isocyanurate, over 2-inch isocyanurate, over 5/8-inch dens deck, over wood deck. 2. Existing Roof System Area C – Single ply PVC adhered to ½-inch dens deck, over 2 layers of 2-inch isocyanurate, over layer of asphalt, over wood deck. 3. Existing Roof System Area E – Built-up roof with gravel surfacing, 1/2-inch wood fiber board, over 2-inch tapered isocyanurate, over 2-inch isocyanurate, over asphalt over wood deck. 4. New Roof System Areas A, B, D - 60 mil fully adhered reinforced EPDM membrane, ½ inch high density Isocyanurate cover board set in low-rise foam adhesive over a new 2 layers of 1-inch isocyanurate insulation mechanically attached though existing insulation and into wood deck. Contractor to use caution, new fasteners not to exceed 1 inch penetration through deck. 5. New Roof System Area C - 60 mil fully adhered reinforced EPDM membrane, ½ inch high density Isocyanurate cover board set in low-rise foam adhesive over a new 1.5- inch isocyanurate insulation mechanically attached though existing insulation and into wood deck. Contractor to use caution, new fasteners not to exceed 1 inch penetration through deck. 6. New Roof System Area E - 60 mil fully adhered reinforced EPDM membrane, ½ inch high density Isocyanurate cover board set in low-rise foam adhesive over a new 2 layers of 1.5-inch isocyanurate insulation mechanically attached though existing insulation and into wood deck. Contractor to use caution, new fasteners not to exceed 1 inch penetration through deck. 7. Provide new 24 ga. gi. color-coated metal counter flashings to match. Provide 1/2 inch per foot crickets and saddles at all, units, etc. Penetrations/details include but are not limited to: sleeper curbs, mechanical unit curbs, pipe penetrations, vent stacks, overflow scuppers, roof drains. At perimeter scupper locations, enlarge existing openings to meet code. Provide new supports at conduit/gas piping locations. 8. Coordinate with owner on solar panel, beehive, and antenna during construction. Provide new skylight domes as indicated on plans with clear lenses. 9. HVAC work is schedule to occur during the same period of roof replacement. Coordinate with mechanical contractor with HVAC replacement.
