The Ontario Building Code | Maximum Spacing of Supports

9.29.5.3. Maximum Spacing of supports

(1) Maximum spacing of supports for gypsum board applied as a single layer shall conform to Table 9.29.5.3.

Table 9.29.5.3.
Spacing of supports for gypsum Board

Forming Part of Sentence 9.29.5.3.(1)

Item

Column 1

Column 2

Column 3

Column 4

Column 5

Thickness, mm

Orientation of Board to Framing

Maximum Spacing of supports, mm o.c.

walls

ceilings

Painted Finish

water-Based Texture Finish

1.

gypsum board conforming to Sentence 9.29.5.2.(1) (except Sections 9 and 12 of ASTM C1396 / C1396M)

9.5

Parallel

Perpendicular

406

406

12.7

Parallel

610

406

Perpendicular

610

610

406

15.9

Parallel

610

406

Perpendicular

610

610

610

2.

gypsum board conforming to Clause 9.29.5.2.(1)(c) (only Section 12 of ASTM C1396 / C1396M)

12.7

Parallel

610

406

Perpendicular

610

610

610