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CHAPEL HILL ORANGE COUNTY VISITORS BUREAU August 12, 2020 <br />308 WEST FRANKLIN, CHAPEL HILL, NC <br /> <br />THERMAL INSULATION 072100 - 7 <br />1. Use insulation widths and lengths that fill the cavities formed by framing members. If <br />more than one length is required to fill cavity, provide lengths that will produce a snug fit <br />between ends. <br />2. Place insulation in cavities formed by framing members to produce a friction fit between <br />edges of insulation and adjoining framing members. <br />3. Maintain 3-inch (76-mm) clearance of insulation around recessed lighting fixtures. <br />4. Install eave ventilation troughs between roof framing members in insulated attic spaces at <br />vented eaves. <br />5. For metal-framed wall cavities where cavity heights exceed 96 inches (2438 mm), support <br />unfaced blankets mechanically and support faced blankets by taping flanges of insulation <br />to flanges of metal studs. <br />D. Install board insulation on concrete substrates by adhesively attached, spindle-type insulation <br />anchors as follows: <br />1. Fasten insulation anchors to concrete substrates with insulation anchor adhesive according <br />to anchor manufacturer's written instructions. Space anchors according to insulation <br />manufacturer's written instructions for insulation type, thickness, and application <br />indicated. <br />2. Apply insulation standoffs to each spindle to create cavity width indicated between <br />concrete substrate and insulation. <br />3. After adhesive has dried, install board insulation by pressing insulation into position over <br />spindles and securing it tightly in place with insulation-retaining washers, taking care not <br />to compress insulation below indicated thickness. <br />4. Where insulation will not be covered by other building materials, apply capped washers to <br />tips of spindles. <br />E. Install board insulation in curtain-wall construction where indicated on Drawings according to <br />curtain-wall manufacturer's written instructions. <br />1. Retain insulation in place by metal clips and straps or integral pockets within window <br />frames, spaced at intervals recommended in writing by insulation manufacturer to hold <br />insulation securely in place without touching spandrel glass. Maintain cavity width of <br />dimension indicated between insulation and glass. <br />2. Install insulation where it contacts perimeter fire-containment system to prevent insulation <br />from bowing under pressure from perimeter fire-containment system. <br />3. For cellulosic-fiber loose-fill insulation, comply with the Cellulose Insulation <br />Manufacturers Association's Special Report #3, "Standard Practice for Installing <br />Cellulose Insulation." <br />F. Apply self-supported, spray-applied cellulosic insulation according to manufacturer's written <br />instructions. Do not apply insulation until installation of pipes, ducts, conduits, wiring, and <br />electrical outlets in walls is completed and windows, electrical boxes, and other items not <br />indicated to receive insulation are masked. After insulation is applied, make it flush with face <br />of studs by using method recommended by insulation manufacturer. <br />G. Stuff glass-fiber loose-fill insulation into miscellaneous voids and cavity spaces where shown. <br />Compact to approximately 40 percent of normal maximum volume equaling a density of <br />approximately 2.5 lb/cu. ft. (40 kg/cu. m). <br />DocuSign Envelope ID: 775B89AF-3514-4D9E-B148-2FDE4EFF16C2