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Standard Practices for Installation of Residential Drywall

HANGING:
As a standard, White Rock uses ½” drywall, typically 4’x12’ in dimension. The drywall is fastened to wood framing using the following application:

WALLS: Gypsum Wallboard Panels are normally hung horizontally using approximately a ¼” bead of adhesive (conforming to ASTM C557) directly to the studs. 1 3/8” cupped head drywall nails are used to fasten the edges of the wallboard panels, followed by 1 ¼” wood screws in the field. Butt joints should be staggered. A typical 4’x12’wallboard panel attached to an 8’ wall would appear similar to Diagram One. (See Diagram Below)

CEILING: Gypsum Wallboard Panels are attached to ceilings by nailing the edges of the panel, and screwing the field. No adhesive is used in this application, therefore, the use of added fasteners are required. Butt joints should be staggered. A typical 4’x12’wallboard panel attached to a ceiling would appear similar to Diagram Two. (See Diagram Below)

FINISHING:
White Rock’s standard level of finish is Level 4, which requires joint tape bedded with joint compound, 2nd coat, and skim coat. (A total of three applications of joint compound.) Between each application of joint compound, sufficient drying time must be allowed to prevent crowning or ridging problems in joints. (See Diagram Three)

CEILING AND WALL TEXTURES:
Stipple: Our stippled ceiling design is somewhat floral and has a random pattern. Application is rolled on joint compound and then “stomped” with a stipple brush. This dries white in color and does not require paint. Knock down texture can be used on walls or ceilings. Pattern simulates plaster finish.

ACOUSTICAL: Our acoustical ceilings have a fine or medium, poly styrene aggregate and are sprayed or “blown” on. This dries white in color and does not require paint.

SANDING:
After finish coat has thoroughly dried, all joints, inside and outside angles, and nail spots are sanded using a rotating machine sander. All inside angles or bullnose (rounded) angles or rounded wall will be hand sanded afterward. During this procedure, face paper on wallboard is roughened which raises the fibers in the paper and is sometimes conspicuous after painting.

FIRST COAT PRIMER: (optional)
White Rock uses manufacturer recommended drywall primer and sealer. This product is sprayed on walls, and/or ceilings. This application helps “laydown” the raised fibers on the face paper from the sanding procedure. This also helps eliminate seeing the joints during times of direct sunlight. This method is performed as an option to our builders, and is not a standard practice on each job. This is however recommended by drywall manufacturers.

CLEAN-UP:
White Rock will proceed with the cleanup stage once the hanging phase is complete. A crew will dispose of scrap wallboard debris and haul away. This crew will return to the job after the sanding phase is complete to do a rough scrape and rough sweep of the floors. Some small pieces of Gypsum, dried joint compound, or sanding residue may still be evident on jobsite after completion.

MOISTURE RESISTANT WALL BOARD:
Unless otherwise noted, White Rock will use a single layer of moisture resistant wallboard attached directly to studs at wet areas of bathrooms. This does not include the entire bathroom. We encourage you to be specific with us regarding this installation. This is not a mold-proof product.

REMODELS, BASEMENTS, BONUS ROOMS, ADDITIONS:
These jobs vary in size, shape, and task. These jobs are typically smaller in size and may require a clean up crew only once or not at all. To minimize dust associated with sanding, a vacuum sanding system is available at an extra charge. White Rock encourages builders/homeowners to remove all personal belongings that are in or around the area of construction. This will prevent any damage. In some cases, you may be asked to sign a waiver before drywall installation begins. Due to the size and nature of these types of jobs, it is only possible to give the customer an A.M. or P.M. arrival of crews to work on the job. Please remember, completion of each job consists of up to seven different steps, taking up to 14 days depending on drying time.