Sheetrock is the trademark brand for drywall gypsum board.
Installing sheetrock in the bathroom can be a challenging project. Bathrooms are usually small, with awkward angles that require oddly shaped sections of drywall. Moisture, ever present in the bathroom, is the enemy of paper-based drywall. To prevent moisture problems, use greenboard, a drywall product that is specially treated to resist moisture. Measure the sheetrock panels carefully, and work at a comfortable pace to avoid mistakes.
Instructions
1. Determine the amount of greenboard sheetrock you will need. Calculate the total square feet of the walls and ceiling to be covered, and divide by 32. Add 10 percent to the total to account for extra cuts and waste. For example, a wall that is 10 feet long and 7 feet high is 70 square feet. Four walls at such dimensions equal 280 square feet. A ceiling that is 10 feet by 10 feet equals 100 square feet; add 100 to 280 for a sum of 380 total square feet. Divide 380 by 32 to get roughly 12. Add 10 percent to 12 to get approximately 13. For a bathroom that is 10 feet long by 10 feet wide by 7 feet high, you will need 13 to 14 4-foot by 8-foot panels of greenboard sheetrock to cover the walls and ceiling.
2. Measure and cut the first panel, if necessary. Use a carpenter's level or chalk line to draw or snap a straight line. Use a utility knife to slowly score the line. Run the utility knife down the scored line several times until you have cut through the surface of the panel's face. Snap the section back at the score line to break the panel in two. Score the other side of the panel at the break mark. Use a hand drywall saw for irregular cuts.
3. Load the panel onto the drywall lift and raise the panel to the corner of the ceiling. Secure the panel tightly against the ceiling joists. Drill drywall screws through the first panel into the joists. Drill a screw every 6 to 8 inches; use more screws around the perimeter of the panel. The screw should dimple the surface of the panel but not break through the surface.
4. Install the sheetrock on the walls, beginning at the top. Have an assistant hold the panels tightly against the wall and the other panels while you drill the screws.
5. Install corner bead for outside corners. Place the corner bead strip over the corner. Adjust the bead so it appears straight on both sides of the corner. Screw drywall screws on one side of the bead, and then drill screws on the other side.
6. Lay fiberglass mesh tape against all the sheetrock seams. Do not install tape over the corner bead material. Use a 4-inch drywall knife to apply joint compound over the mesh tape, screws and corner beads. Do not worry if the first coat of compound does not entirely cover the seams; additional coats will cover it.
7. Allow the first coat to completely dry. Lightly sand the joint compound with the drywall sanding block. Remove large bumps and ridges.
8. Apply a second coat of joint compound with the 4-inch drywall knife. Spread this second coat slightly wider than the first coat. Allow it to dry completely.
9. Lightly sand the new coat of joint compound with the drywall sanding block. Remove large bumps and ridges.
10. Apply a third coat of joint compound. Use the 10-inch drywall knife for the long wall and ceiling seams. Spread this final coat slightly wider than the previous two coats. Allow it to dry completely.
11. Sand the new coat of joint compound with the drywall sanding block. Remove large bumps and ridges.
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