- 1). Locate the ceiling joists using your electronic stud locator. Use your pencil and level to mark out lines indicating the position of each joist.
- 2). Measure the length of the ceiling alongside the wall where you want to start. (It must be perpendicular to the marked joists.) Mark the measurement on a piece of ceiling planking. Cut the plank to size on your miter saw.
- 3). Use your adjustable square to find the angle of the ceiling relative to the wall by holding the square against the wall and adjusting it to fit against the ceiling.
- 4). Tilt the blade of your table saw to the same angle that you found on the ceiling. Feed the first plank through the table saw, cutting off just enough of the grooved side of it to accommodate the angle.
- 5). Hold the board to the ceiling with the cut side facing the wall. It should mimic the angle of the wall. Leave a 3/8-inch gap from the edge of the cut board to the wall to allow the wood to expand with environmental changes. (Ceiling trim will cover the gap.)
- 6). Shoot two nails through the face of the board at each point where it intersects with a joist using your trim nailer.
- 7). Cut the next board to size on your miter saw. Connect it to the side of the first one, by its tongue and groove. Shoot nails through side of the board at each intersection with a joist putting in the nails at an upward angle.
- 8). Nail the rest of the boards in the same manner. At the peak, again find the angle and cut it lengthwise on the table saw.
- 9). Install the wood on the other half of the vaulted ceiling in the same manner. Hang your ceiling trim around the edges of the ceiling and across the peak.
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