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DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />B. Start installation of membrane roofing in presence of roofing system manufacturer's technical <br />personnel. <br />C. Accurately align membrane roofing and maintain uniform side and end laps of minimum <br />dimensions required by manufacturer. Stagger end laps. <br />D. Mechanically fasten or adhere membrane roofing securely at terminations, penetrations, and <br />perimeter of roofing. <br />E. Apply membrane roofing with side laps shingled with slope of roof deck where possible. <br />F. In -Seam Attachment: Secure one edge of TPO sheet using fastening plates or metal battens <br />centered within membrane seam and mechanically fasten TPO sheet to roof deck. <br />G. Seams: Clean seam areas, overlap membrane roofing, and hot -air weld side and end laps of <br />membrane roofing and sheet flashings according to manufacturer's written instructions to ensure <br />a watertight seam installation. <br />1. Test lap edges with probe to verify seam weld continuity. Apply lap sealant to seal cut <br />edges of sheet membrane. <br />2. Verify field strength of seams a minimum of twice daily and repair seam sample areas. <br />3. Repair tears, voids, and lapped seams in roofing that does not comply with requirements. <br />H. Spread sealant bed over deck drain flange at roof drains and securely seal membrane roofing in <br />place with clamping ring. <br />3.6 BASE FLASHING INSTALLATION <br />A. Install sheet flashings and preformed flashing accessories and adhere to substrates according to <br />membrane roofing system manufacturer's written instructions. <br />B. Apply bonding adhesive to substrate and underside of sheet flashing at required rate and allow <br />to partially dry. Do not apply to seam area of flashing. <br />C. Flash penetrations and field- formed inside and outside corners with cured or uncured sheet <br />flashing. <br />D. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Hot -air weld side <br />and end laps to ensure a watertight seam installation. <br />E. Terminate and seal top of sheet flashings and mechanically anchor to substrate through <br />termination bars. <br />3.7 WALKWAY INSTALLATION <br />A. Flexible Walkways: Install walkway products in locations indicated. Heat weld to substrate or <br />adhere walkway products to substrate with compatible adhesive according to roofing system <br />manufacturer's written instructions. <br />THERMOPLASTIC POLYOLEFIN (TPO) ROOFING (Alternate G -2) (Addendum #1) 075423-10 <br />