Sheetrock (also called drywall) is used to build walls and ceilings, providing a flat, even surface. It's installed in sections, and then the seams are "taped" and covered in joint compound, a form of plaster, to visually meld the boards together to form a single flat surface. Installing ceiling sheetrock is basically the same process as on a wall, except it is more physically challenging, since you have to hold the boards above your head. An assistant is a must for this project.
Instructions
1. Measure from one end of the ceiling out, perpendicular to the ceiling joists. Measure to the middle of the last joist within 8 feet of the wall.
2. Transfer the measurements you took in Step 1 to a piece of sheetrock. Cut the sheetrock to size by running your utility knife alongside the level at the proper position, scoring the surface and then snapping the piece in half.
3. Lift the sheetrock to the ceiling, using two ladders and an assistant. The cut end should be located against the wall, with the finished end on the middle of the farthest joist to which you measured. Secure the sheet by driving drywall screws every 6 inches along all the joists above the drywall.
4. Put in the next sheet of sheetrock off the end of the first one. The other end should line up with the middle of another joist, since the sheets are sized in conjunction with standard joists. Repeat until you reach the far wall. Cut the last piece to fit.
5. Repeat for the next course of sheetrock boards, starting that course at the opposite end as before so the ends of the boards are staggered between different joists. Don't allow any four-way intersections of the sheetrock. Cover the whole ceiling.
6. Put drywall tape over the seams of the boards, pressing the self-adhesive mesh in place. Spread joint compound over the tape with a drywall knife, covering it completely in roughly 4-inch seams. Let it dry for six hours.
7. Apply a second layer of compound over the lines, making the seams 1 inch to 2 inches wider and keeping them flat. Let it dry. Add a third layer, making it a little wider. Let it dry overnight, and then sand it smooth. Paint the ceiling.
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