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CHAPEL HILL ORANGE COUNTY VISITORS BUREAU August 12, 2020 <br />308 WEST FRANKLIN, CHAPEL HILL, NC <br /> <br />TILING 093000 - 6 <br />2.8 MISCELLANEOUS MATERIALS <br />A. Trowelable Underlayments and Patching Compounds: Latex-modified, portland cement-based <br />formulation provided or approved by manufacturer of tile-setting materials for installations <br />indicated. <br />B. Metal Edge Strips: Angle or L-shape, height to match tile and setting-bed thickness, metallic or <br />combination of metal and PVC or neoprene base, designed specifically for flooring <br />applications; stainless-steel, ASTM A 666, 300 Series exposed-edge material. Apply as <br />scheduled and/or shown on the drawings. <br />C. Tile Cleaner: A neutral cleaner capable of removing soil and residue without harming tile and <br />grout surfaces, specifically approved for materials and installations indicated by tile and grout <br />manufacturers. <br />2.9 MIXING MORTARS AND GROUT <br />A. Mix mortars and grouts to comply with referenced standards and mortar and grout manufacturers' <br />written instructions. <br />B. Add materials, water, and additives in accurate proportions. <br />C. Obtain and use type of mixing equipment, mixer speeds, mixing containers, mixing time, and other <br />procedures to produce mortars and grouts of uniform quality with optimum performance <br />characteristics for installations indicated. <br />PART 3 - EXECUTION <br />3.1 EXAMINATION <br />A. Examine substrates, areas, and conditions where tile will be installed, with Installer present, for <br />compliance with requirements for installation tolerances and other conditions affecting <br />performance of installed tile. <br />1> Verify that substrates for setting tile are firm, dry, clean, free of coatings that are <br />incompatible with tile-setting materials including curing compounds and other substances <br />that contain soap, wax, oil, or silicone; and comply with flatness tolerances required by <br />ANSI A108.01 for installations indicated. <br />2> Verify that concrete substrates for tile floors installed with bonded mortar bed or thin-set <br />mortar comply with surface finish requirements in ANSI A108.01 for installations <br />indicated. <br />a. Verify that surfaces that received a steel trowel finish have been mechanically <br />scarified. <br />b. Verify that protrusions, bumps, and ridges have been removed by sanding or <br />grinding. <br />DocuSign Envelope ID: 775B89AF-3514-4D9E-B148-2FDE4EFF16C2