09250.doc

SECTION 09250

PART 1

GENERAL

1.1 The contractor shall furnish all labor and materials to render a complete gypsum wallboard system installation.

PART 2

PRODUCTS

2.1 Gypsum Wallboard: 5/8" thick type X, ASTM C-36 SW tapered edges.

2.2 Water-resistant gypsum wall board: 5/8” thick, ASTM C 630, SW tapered edges.

2.3 Wallboard Casings:

A. Corner bead: USG #800 Durabead

B. "L" metal edge trim USG #200-B

C. Control joint: USG #093

2.4 Screws: 1-1/8" Type "S" Buglehead @ RC-1 channel, 1" Type "S" Buglehead at all other areas.

2.5 Tape and Cement: Approved manufacturer's materials.

2.6 Texture: Hawk and Trowel, provide samples to the Contracting Officer for approval.

2.7 Caulking: USG. Acoustical Sealant.

PART 3

EXECUTION

3.1 Walls: Apply board perpendicular to framing with ends occurring over firm bearing, joints staggered, field bearings screwed at 12" centers (5 per 48" width). End bearings screwed on 7" centers. Start at center of boards and work toward ends. Apply casings per manufacturer's directions and install at all outside edges and at intersections with dissimilar materials. Trim out corners with corner bead. Tape, cement, and sand wallboard surfaces. Apply thin cement layer, set tape into cement, let dry for 24 hours, and sand joints, texture entire area to uniform finish.

3.2 Complete installed system shall conform to all local codes and manufacturer's requirements for support size and spacing and lateral bracing.

3.3 Submit sample of finish texture for approval prior to commencing work.

END OF SECTION

09250 - 1 H:\8348\8348003.23\Docs\B-3 Specs\Division 9\09250.doc November 1, 2005