Drywall is stacked inside the workspace to acclimate to the interior conditions.
Drywall is a large sheet material that is made of gypsum plaster sandwiched between two thick sheets of paper. After the plaster is pressed between the papers, the sheet is kiln dried to create a thick, hard sheet that is commonly used to make the surface of interior walls and ceilings. Installing drywall looks easier than it is because gypsum is a type of rock, which makes the large sheets heavy and sometimes difficult to maneuver, lift and hold.
Ceiling Repair
Prepare the ceiling for hanging drywall. You need to create a level surface to attach the drywall to. Drywall is usually attached to the ceiling joists or to 1 x 3-inch strapping which is attached perpendicular to the ceiling joists at 16 inches on center. Because all joists are not the same size, you must shim some strapping to ensure that all of the nail-to surfaces are level and straight.
Tools
Assemble drywall tools that include a drywall T-square and utility knife, which are used to cut large sheets. Place the T-square on the edge of the drywall, and cut through the surface paper on one side. Remove the T-square, and bend the drywall away from the cut. The rock will snap. Cut the other side of the paper with the utility knife. Other tools should include a wide putty knife, a tray and a drywall sanding block. You will also need a power screwdriver and drywall screws. A spiral cut saw is good for cutting openings; a drywall saw and a lift will also help.
Ceilings First
When an entire room is gutted to the studs, you should drywall the ceiling first, which allows the wall sheets to butt up against the ceiling for a crisp ceiling-to-wall corner. Mark the ceiling joist locations on the sheet of drywall before lifting the drywall for attachment, which will give you lines to screw into making attachment easier. Mark the location of light fixtures on the sheet. Use a drywall lift to lift and hold the sheet in position so you can screw the sheet to the joists. Use a spiral cut saw to cut out the light fixture openings.
Walls Second
Install drywall on the walls after the ceiling is attached. Use a 1/2-inch scrap board along the floor, and rest the drywall on the wood, which lifts the wall above the subfloor and prevents water from wicking into the wall if there is a spill on the floor. Position the drywall against the studs, and mark the locations of each stud on the drywall. Installing blocking at corners is sometimes necessary to create a nail-to surface. Ensure your studs are level and straight before hanging the drywall. Cut drywall halfway across a stud to share the stud with the next sheet of drywall.
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