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GYPSUM WALLBOARD <br />Section 09250 <br />15-1207 <br />5. Soffit Vent: Stockton Products 2-1/2" with %" vent holes as shown on the Drawings. <br />6. Expansion Joint: USG No. 093 Control Joint, Gold Bond E -Z Expansion Joint, <br />equivalents by Beadex or Domtar or accepted equal. <br />7. Channel screed at casework: Fry Reglet, %" X PA -1" aluminum reveal. <br />8. Others as indicated on the Drawings and as recommended by reference standards. <br />C. Fasteners: <br />1. Screws: Gypsum wallboard to wood, use 1-1/4 inch length, bugle head; second layer of <br />gypsum wallboard to wood use 2 inch length. Gypsum wallboard to metal studs or <br />furring channels, use 1 inch length HiLo type S, bugle head for 20 gauge or less and 1- <br />1/8 inch length HiLo type S, bugle head for studs greater than 20 gauge; second layer <br />of gypsum wallboard to metal studs or furring channels use 2 inch length. Other <br />fastener types as required and recommended by gypsum wallboard manufacturer, <br />applicable building code and in accordance with the specified standards. <br />2. Spacing shall be in accordance with current California Building Code. <br />D. Joint System Materials: Conform to ASTM C475. <br />1. Tape: USG Sheetrock Brand Joint Tape or approved equal. <br />2. Joint compound: USG Sheetrock Brand Joint Compound - Taping, or <br />accepted equal. <br />3. Joint finishing compound: USG Sheetrock Brand Joint Compound - <br />Topping, or approved equal. <br />E. Interior wall sealant: Highly elastic, water-based compound, specifically formulated for <br />acoustical sealing. Non-bleeding, non -staining, pumpable and easily applied in beads; <br />Tremco Acoustical Sealant, Presstite 579.64; or accepted equal. <br />F. Adhesives shall be per gypsum wallboard manufacturer's recommendations. <br />PART 3 - EXECUTION <br />3.01 SURFACE CONDITIONS <br />A. Report unacceptable sub -surfaces to Contractor for corrective action before proceeding with <br />installation. Starting of work will indicate acceptance of such sub -surfaces. <br />B. Surface acceptance: After application of sealer, surfaces shall be checked for surface <br />damage, defects or uneven walls. Uneven walls shall mean those that are not straight, plumb <br />or of even true plane. Such discrepancies shall be corrected prior to application of further wall <br />decoration. <br />3.02 COORDINATION <br />A. Coordinate work to avoid delays and interference with work of mechanical, electrical and <br />other trades. <br />3.03 WORKMANSHIP <br />A. Workmanship shall be of highest quality. Joints, corners, screws and nail heads shall be <br />0 <br />