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DocuSign Envelope ID:D561B1AE-DF34-4907-AD06-AOEB37BBE427 <br /> CHAPEL HILL ORANGE COUNTY VISITORS BUREAU August 12,2020 <br /> 308 WEST FRANKLIN,CHAPEL HILL,NC <br /> 2. Base Shoe Molding: 1/2 by 1/2 inch(13 by 19 mm). <br /> 3. Threshold: Flush. <br /> PART 3 -EXECUTION <br /> 3.1 EXAMINATION <br /> A. Examine substrates, areas and conditions, with Installer present, for compliance with <br /> requirements for maximum moisture content, installation tolerances, and other conditions <br /> affecting performance of wood flooring. <br /> 1. Verify that substrates comply with tolerances and other requirements specified in other <br /> Sections. <br /> 2. For adhesively applied wood flooring, verify that substrates are free of cracks, ridges, <br /> depressions, scale, and foreign deposits that might interfere with adhesion of resilient <br /> products. <br /> 3. Proceed with installation only after unsatisfactory conditions have been corrected. <br /> B. Substrate Moisture Testing, General: Perform tests recommended by manufacturer or, if none, <br /> comply with applicable recommendations in NWFA's "Installation Guidelines: Wood <br /> Flooring." <br /> 1. Proceed with installation only after substrates pass testing. <br /> C. Concrete Moisture Testing: Perform anhydrous calcium chloride test per ASTM F 1869, as <br /> follows: <br /> 1. Perform tests so that each test area does not exceed 200 sq. ft. (18.6 sq. m) and perform <br /> not less than 2 tests in each installation area with test areas evenly spaced in installation <br /> area. <br /> 2. Proceed with installation only after substrates have maximum moisture-vapor-emission <br /> rate 3.0 lb of water/1000 sq.ft. (2.04 kg of water/92.9 sq. m) in 24 hours. <br /> 3. Perform alkalinity and adhesion tests recommended in writing by manufacturer or, if <br /> none, according to NWFA's "Installation Guidelines: Wood Flooring. Proceed with <br /> installation only after substrates pass testing. <br /> 3.2 PREPARATION <br /> A. Grind high spots and fill low spots on concrete substrates to produce a maximum 1/8-inch (3- <br /> mm) deviation in any direction when checked with a 10-foot(3-m) straight edge. <br /> 1. Use trowelable leveling and patching compounds, according to manufacturer's written <br /> instructions,to fill cracks,holes, and depressions in substrates. <br /> B. Remove coatings, including curing compounds, and other substances on substrates that are <br /> incompatible with installation adhesives and that contain soap, wax, oil, or silicone, using <br /> mechanical methods recommended by manufacturer. Do not use solvents. <br /> WOOD FLOORING 096400 - 5 <br />