Scope of Work: Adhered EPDM roof system Remove existing roofing and insulation to the steel deck and dispose of legally. Owner’s representative and Contractor shall inspect insulation substrate and designate any areas where deck repair is needed. Furnish and install new ¼” tapered polyisocyanurate roof insulation, mechanically attached to the steel deck. Average R-value 35. Fastening pattern shall comply with Manufacturer’s I-90 wind uplift requirements and corner and perimeter fastening shall be enhanced to meet ASCE-7 design criteria. All polyisocyanurate insulation shall be glass facer meeting ASTM C 1289-06, Type II, Class 1, Grade 2 (20 psi). Polyisocyanurate crickets and saddles need to be installed at the high sides of units and between water outlets. All polyisocyanurate insulation shall be meet ASTM C 1289-06, Type II, Class 1 Grade 2 (20 psi) Furnish & install tapered edge strip to transition from ½” to zero, at drains and saddles. Install one layer of ½”x4’x4’ gypsum coverboard, in two-part urethane adhesive. Attachment pattern shall comply with Manufacturer’s I-90 wind uplift requirements and corner and perimeter fastening shall be enhanced to meet ASCE-7 design criteria. Form 4’ sump at all drain locations. Furnish and install tapered edge strip to create ½’ to zero smooth transition. Furnish and install .060 Fully Adhered EPDM Class A fire rated roof system according to manufacturers’ published specifications and requirements. Adhesive shall be aerosol or other low odor material. Furnish and install new ES-1 rated coping cap or fascia metal as specified at perimeters. No shop fabricated coping Furnish and install ship ladder from Area AB to area D. Remove screen wall and posts on area AB, patch deck as needed. Furnish and install ship ladder from area D to area C. Furnish manufacturer’s Twenty-year material & workmanship warranty with 72mph wind coverage. Manufacturer’s warranty must include perimeter metal.
