| 9.29.9. |
Particleboard, OSB or Waferboard Finish |
| 9.29.9.1. |
Material Standard
- Particleboard finish shall conform to ANSI A208.1, "Particleboard."
- OSB or waferboard finish shall conform to
- CSA O325, "Construction Sheathing," or
- CSA O437.0, "OSB and Waferboard."
|
| 9.29.9.2. |
Minimum Thickness
- Except as provided in Sentences (2) and (3), the minimum thickness of O-2 grade OSB used as an interior finish shall conform to that shown for plywood in Table 9.29.6.1.
- Thicknesses listed in Table 9.29.6.1. shall permit a manufacturing tolerance of −0.4 mm.
- No minimum thickness is required where O-2 grade OSB is applied over continuous backing.
- OSB conforming to O-1 grade, waferboard conforming to R-1 grade and particleboard shall be
- not less than 6.35 mm thick on supports not more than 400 mm o.c.,
- not less than 9.5 mm thick on supports not more than 600 mm o.c., and
- not less than 6.35 mm thick on supports not more than 600 mm o.c. in walls where blocking is provided at midwall height.
- OSB conforming to CSA O325, "Construction Sheathing," shall meet the minimum panel mark of
- W16, on supports not more than 400 mm o.c.,
- W24, on supports not more than 600 mm o.c., and
- W16, on supports not more than 600 mm o.c. where blocking is provided at mid-wall height.
|
| 9.29.9.3. |
Nails
- Except as provided in Sentence (2), nails for fastening particleboard, OSB or waferboard shall be not less than 38 mm casing or finishing nails spaced not more than 150 mm o.c. along edge supports and 300 mm o.c. along intermediate supports.
- Where OSB or waferboard provides required bracing in braced wall panels, the OSB or waferboard shall be fastened in accordance with the fastening requirements for sheathing stated in Sentence 9.23.3.5.(2).
|
| 9.29.9.4. |
Edge Support
- All particleboard, OSB or waferboard edges shall be supported by furring, blocking or framing.
|