1. Roof Sectors A, B, C, and D: a. Remove and dispose of all existing EPDM roof membrane, tapered insulation and gypsum board down to the plywood deck. b. Remove and dispose of membrane flashings and sheet metal flashings. c. Replace damaged/deteriorated wood blocking. d. Replace damaged/deteriorated plywood decking. e. Provide new 1/2 inch thick high density polyisocyanurate underlayment board. f. Provide new tapered polyisocyanurate insulation to provide a minimum of ¼” per foot finished slope at crickets between the drain outlets, minimum thickness of 0.5 inches. g. Provide a minimum 1/4 inch thick gypsum cover board over the polyisocyanurate underlayment board and the tapered polyisocyanurate insulation. h. Provide adhered fleece/felt backed thermoplastic single-ply membrane and associated membranes and sheet metal flashings and accessories required for a complete, watertight, 20-year warrantable roof assembly. i. Provide conductor heads and downspouts. j. Perform additional work as illustrated or described in this Project Manual.
