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DSS Skills Development Center Smith Sinnett / 2020045 <br />Chapel Hill, North Carolina Orange County <br /> <br />RESILIENT TILE FLOORING 09 65 19 - 3 <br />1. Use adhesives that comply with the following limits for VOC content when calculated according <br />to 40 CFR 59, Subpart D (EPA Method 24): <br />a. Vinyl Composition Floor Tile Adhesives: Not more than 50 g/L. <br />C. Floor Polish: Provide protective liquid floor polish products as recommended by manufacturer. <br />D. Concrete Slab Primer: Non-staining type as recommended by flooring manufacturer. <br />PART 3 - EXECUTION <br />3.1 EXAMINATION <br />A. Examine substrates, with Installer present, for compliance with requirements for maximum moisture <br />content and other conditions affecting performance of the Work. <br />B. Verify that finishes of substrates comply with tolerances and other requirements specified in other <br />Sections and that substrates are free of cracks, ridges, depressions, scale, and foreign deposits that might <br />interfere with adhesion of floor tile. <br />C. Proceed with installation only after unsatisfactory conditions have been corrected. <br />3.2 PREPARATION <br />A. Prepare substrates according to manufacturer's written instructions to ensure adhesion of resilient <br />products. <br />B. Concrete Substrates: Prepare according to ASTM F 710. <br />1. Verify that substrates are dry and free of curing compounds, sealers, and hardeners. <br />2. Remove substrate coatings and other substances that are incompatible with adhesives and that <br />contain soap, wax, oil, or silicone, using mechanical methods recommended by manufacturer. Do <br />not use solvents. <br />3. Alkalinity and Adhesion Testing: Perform tests recommended by manufacturer. Proceed with <br />installation only after substrates pass testing. <br />4. Moisture Testing: Perform tests recommended by manufacturer. Proceed with installation only <br />after substrates pass testing. <br />a. Perform anhydrous calcium chloride test, ASTM F 1869. Proceed with installation only <br />after substrates have maximum moisture-vapor-emission rate of 3 lb of water/1000 sq. ft. in <br />24 hours. <br />b. Perform relative humidity test using in situ probes, ASTM F 2170. Proceed with <br />installation only after substrates have a maximum 75% relative humidity level <br />measurement. <br />C. Fill cracks, holes, and depressions in substrates with trowelable leveling and patching compound and <br />remove bumps and ridges to produce a uniform and smooth substrate. <br />D. Do not install floor tiles until they are same temperature as space where they are to be installed. <br />1. Move resilient products and installation materials into spaces where they will be installed at least <br />48 hours in advance of installation. <br />E. Sweep and vacuum clean substrates to be covered by resilient products immediately before installation. <br />F. Remove coatings, including curing compounds, and other substances that are incompatible with flooring <br />adhesives and that contain soap, wax, oil, or silicone, by using a terrazzo or concrete grinder, a drum <br />sander, or a polishing machine equipped with a heavy-duty wire brush. <br />G. Apply concrete slab primer, if recommended by flooring manufacturer, prior to applying adhesive. Apply <br />according to manufacturer's directions. <br />3.3 FLOOR TILE INSTALLATION <br />A. Comply with manufacturer's written instructions for installing floor tile. <br />DocuSign Envelope ID: ECCAC5A0-6CC8-4B37-8AD3-89D69F0AE1AE