Orange County NC Website
Browse       Search
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 /> 2.8 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 /> TILING 093000 - 6 <br />