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D. Beads and Trim: Exterior corner beads,Dur-A-Bead comer reinforcement;at all exterior corners. <br /> Inside corners,to have Perf-A-Bead comer reinforcement. Where gypsum board terminates provide#400 <br /> series metal trim. <br /> E. Tape System:All exposed joints and trim to be finished by using USG Perf-A-Tape joint system. <br /> F. Texture material at ceilings:Medium texture,sprayed on P.C.#8 vinyl drywall texture,provide <br /> with hardener.Mix with water as per manufacturer's recommendations. <br /> G. Sealant: Sheetrock brand W/R sealant,apply to all cut edges and screw heads of water-resistant <br /> fire rated and exterior soffit g,ypsum boazd. <br /> 1.Caulking:Provide caulking as recommended by manufactured to achieve wall STC rating. <br /> 2.3 ADHESIVES <br /> A. Only adhesives which are recommended by the manufactured for use on the specific substrate to <br /> insure permanent bond. <br /> PART 3: EXECUTION <br /> 3.1 INSTALLATION <br /> A. Wallboazd: <br /> 1. General: Hold g,ypsum boazd in firm contact with supports when installing.No horizontal <br /> joints permitted,eliminate small pieces. Do not use broken or damaged sheets. <br /> 2. Joints: install so all joints occw over a support.Neatly fit all abutting joints and to all <br /> obstructions. Do not force joints overly tight. <br /> 3. Fastening,General:Fasten gypsum board with adhesive and drywall screws. Apply <br /> adhesive as recommended by manufacturer. Space screws not less than 3/8"from edges and <br /> ends of wallboard. Stagger screws on adjoining edges or ends. While screws are being <br /> driven,hold wallboard in firm contact underlying support.Attach from central portion of <br /> wallboard toward ends and edges.Drive screws with an electric screw gun equipped with <br /> adjustable screw depth control and Phillips bit Set heads of exposed screws to provide <br /> slight depression below surface of gypsum board.If screw size and screw spacing as <br /> specified differs with manufact�uer's recommendations,verify with Architect prior to <br /> application. <br /> 4. Install water resistant gypsum board,full height at 3 sides of bathtubs and showers in , <br /> Master Bathroom.All other wa11s in Bathroom shall have water resistant gypsum board to 4' <br /> Metal comer bead: <br /> a. Securely install at a11 corners in single lengths where the length of the corner does <br /> not exceed standard stock lengths. Apply at least two coats of compound over <br /> beads,each coat feathered out onto panel face. <br /> Metal trim: <br /> a. Securely install at boazd terminations finished with joint compound as required. <br /> B. . Finishing and accessories: <br /> 1. General:Accomplish all taping and filling on fmish layer to provide smooth flush surfaces, <br /> smoothly sanded so no joints,screws or other depressions are visible after painting,sand <br /> and otherwise fmish so no further preparation is necessary to the painter. <br /> 2. No taping,filling or sanding of joints required at first layer of gypsum board in two layer <br /> application. No damaged areas,edges or ends will be permitted. <br /> Page 2 of 3 <br />