Clean all loose materials off roof. Remove all existing roofing materials to the roof deck. Install a minimum 60 mil fully adhered polyester scrim reinforce thermoplastic polyolefin roofing membrane (TPO) that meets or exceeds the requirements of ASTM D6878 Standard Specification for Thermoplastic Polyolefin Based sheet roofing and is guaranteed for 15 years in writing by the manufacturer. All roofing, accessories and adhesives shall be approved for use with roofing material by the roofing manufacturer. All flashing and terminations to adjoining building components shall be per manufacturer's specifications. The roof surface shall be structurally sound and continuously sloped for proper drainage. Install wood nailers at all roof perimeter edges where metal edging and gutter systems are specified or where indicated in the manufacturer's installation requirements. All adhesives shall meet contain less than 250 g/l of VOC content. Roofing shall be installed over a roofing manufacturer's approved polyisocyanurate foam core insulation board with laminated heavy, black (non-asphaltic) glass fiber reinforced felt facers with no gaps between board. Use of 1' ISO Boards required. 3 degree slope minimum. ALL WORK OUTSIDE OF ROOF WILL CARRY A 2 YEAR WARRANTY MINIMUM...
