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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 /> B. Joint Tape: <br /> 1. Interior Gypsum Wallboard: Paper. <br /> 2. Exterior Gypsum Soffit Board: Paper. <br /> 3. Glass-Mat Gypsum Sheathing Board: 10-by-10 glass mesh. <br /> 4. Tile Backing Panels: As recommended by panel manufacturer. <br /> C. Joint Compound for Interior Gypsum Wallboard: For each coat use formulation that is <br /> compatible with other compounds applied on previous or for successive coats. <br /> 1. Prefilling: At open joints[,rounded or beveled panel edges,] and damaged surface areas, <br /> use setting-type taping compound. <br /> 2. Embedding and First Coat: For embedding tape and first coat on joints, fasteners, and <br /> trim flanges,use drying-type, all-purpose compound. <br /> a. Use setting-type compound for installing paper-faced metal trim accessories. <br /> 3. Fill Coat: For second coat,use setting-type, sandable topping compound. <br /> 4. Finish Coat: For third coat,use setting-type, sandable topping compound. <br /> 5. Skim Coat: For final coat of Level 5 finish,use drying-type, all-purpose compound. <br /> D. Joint Compound for Exterior Applications: <br /> 1. Exterior Gypsum Soffit Board: Use setting-type taping compound and setting-type, <br /> sandable topping compound. <br /> 2. Glass-Mat Gypsum Sheathing Board: As recommended by sheathing board <br /> manufacturer. <br /> E. Joint Compound for Tile Backing Panels: <br /> 1. Water-Resistant Gypsum Backing Board: Use setting-type taping compound and setting- <br /> type, sandable topping compound. <br /> 2. Glass-Mat, Water-Resistant Backing Panel: As recommended by backing panel <br /> manufacturer. <br /> 3. Cementitious Backer Units: As recommended by backer unit manufacturer. <br /> 2.5 AUXILIARY MATERIALS <br /> A. General: Provide auxiliary materials that comply with referenced installation standards and <br /> manufacturer's written recommendations. <br /> B. Laminating Adhesive: Adhesive or joint compound recommended for directly adhering <br /> gypsum panels to continuous substrate. <br /> 1. Use adhesives that have a VOC content of 50 g/L or less when calculated according to <br /> 40 CFR 59, Subpart D(EPA Method 24). <br /> C. Steel Drill Screws: ASTM C 1002,unless otherwise indicated. <br /> 1. Use screws complying with ASTM C 954 for fastening panels to steel members from <br /> 0.033 to 0.112 inch(0.84 to 2.84 mm)thick. <br /> GYPSUM BOARD 092900 -4 <br />