Score the face paper with a knife along a straightedge, snap the board, and cut the back paper. Fix the board with drywall screws into the steel sections.
- Lay the boards across the ceiling sections, and stagger the end joints from row to row.
- Keep screws 10 mm from a paper-bound edge and 13 mm from a cut edge.
- Set each screw head just under the paper. Do not break the paper.