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Orange County Facility Renovations <br />Hillsborough, NC <br /> <br /> <br /> <br />Smith Sinnett ACOUSTICAL PANEL CEILINGS <br />2020046/2020047/2020048/2020049/2020055 09 51 13 - 2 <br />C. Handle acoustical tiles carefully to avoid chipping edges or damaging units in any way. <br />1.8 PROJECT CONDITIONS <br />A. Environmental Limitations: Do not install acoustical tile ceilings until spaces are enclosed and <br />weatherproof, wet work in spaces is complete and dry, work above ceilings is complete, and ambient <br />temperature and humidity conditions are maintained at the levels indicated for Project when occupied for <br />its intended use. <br />1. Pressurized Plenums: Operate ventilation system for not less than 48 hours before beginning <br />acoustical tile ceiling installation. <br />1.9 COORDINATION <br />A. Coordinate layout and installation of acoustical panels and suspension system with other construction that <br />penetrates ceilings or is supported by them, including light fixtures, HVAC equipment, fire-suppression <br />system, and partition assemblies <br />1.10 EXTRA MATERIALS <br />A. Furnish extra materials described below that match products installed and that are packaged with <br />protective covering for storage and identified with labels describing contents. <br />1. Acoustical Ceiling Units: Full-size tiles equal to 2.0 percent of quantity installed. <br />2. Suspension System Components: Quantity of each concealed grid and exposed component equal <br />to 2.0 percent of quantity installed. <br />PART 2 - PRODUCTS <br />2.1 PERFORMANCE REQUIREMENTS <br />A. Surface-Burning Characteristics: Comply with ASTM E84; testing by a qualified testing agency. Identify <br />products with appropriate markings of applicable testing agency. <br />1. Flame-Spread Index: Class A according to ASTM E1264. <br />2. Smoke-Developed Index: 450 or less. <br />2.2 ACOUSTICAL PANELS <br />A. Basis-of-Design Product (as listed below): Subject to compliance with requirements, provide Armstrong <br />World Industries, Inc. product as specified or a comparable product by one of the following: <br />1. CertainTeed <br />2. USG Interiors, Inc <br />B. Lay-in Ceiling “A” Armstrong 1713 School Zone Fine Fissured, USG 22421 Radar Education or equal <br />by CertainTeed HHF-454-HNR. Match Existing Ceiling Tile. <br />1. Color: White. <br />2. LR: Not less than 0.83. <br />3. NRC: Not less than 0.70. <br />4. CAC: Not less than 35. <br />5. Edge/Joint Detail: Square Edge <br />6. Thickness: min. 3/4 inch. <br />7. Modular Size: 24 by 24 inches. <br />8. Antimicrobial Treatment: Broad spectrum fungicide and bactericide based. <br />9. 15 Year No-Sag Resistance: Provide 15 year no-sag warranty. <br />C. Acoustical Panel Standard: Manufacturer's standard panels according to ASTM E1264. <br />DocuSign Envelope ID: 09980A3B-0691-41B4-854D-3865F2287392