Spacing of Supports for Gypsum Board
Table 9.29.5.3.
Forming Part of Sentence 9.29.5.3.(1)
Table 9.29.5.3. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.
GYPSUM BOARD FINISH
Gypsum board is usually applied in single sheets directly on the framing members. On ceilings, the board is applied with the long dimension at right angles to the trusses or joists. When ceilings are strapped with 19 × 89 mm (1 × 4 in. nominal) lumber, the long dimension would run parallel to the trusses or joists.
On walls it is more common to apply the sheets horizontally because horizontal joints are located at a convenient height for taping and sanding. Ends of sheets should terminate at a corner and always on a support.
Source : Canada Mortgage and Housing Corporation (CMHC)
