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OBC 2006 › Division B

9.23.16.

Version 0 — in force 31 December 2006

In force
Verified · covered Verified against the 2006-12-31–2007-04-01 consolidation, whose range covers the query date. How to read this

Provenance

OBC 1997 · continues from 9.23.16. — Pro

Base · O. Reg. 350/06 · ext← current

Original — base regulation

OBC 2012 · continues as 9.23.16. — Pro

9.23.16. — Wall Sheathing

Content not available for this version.

9.23.16.1. — Required Sheathing

(1) Exterior walls and gable ends shall be sheathed when the exterior cladding requires intermediate fastening between supports or if the exterior cladding requires solid backing.

Text · e-Laws consolidated snapshot

9.23.16.2. — Thickness, Rating and Material Standards

(1) Where wall sheathing is required, it shall conform to Table 9.23.16.2.A. or Table 9.23.16.2.B.

Text · e-Laws consolidated snapshot

Table 9.23.16.2.A. Wall Sheathing Thickness and Specifications Forming Part of Sentence 9.23.16.2.(1)

Column 1

Column 2

Column 3

Column 4

Type of Sheathing

Minimum Thickness, mm(1)

Material Standards

With Supports 400 mm o.c.

With Supports 600 mm o.c.

Fibreboard (insulating)

9.5

11.1

CAN/ULC-S706

Gypsum Sheathing

9.5

12.7

CAN/CSA-A82.27-M

ASTM C79 / C79M

ASTM C1177 / C1177M

ASTM C1396 / C1396M

Lumber

17.0

17.0

See Table 9.3.2.1.v1

Mineral Fibre, Rigid Board, Type 2

25

25

CAN/ULC-S702

OSB, O-2 Grade

6.0

7.5

CSA O437.0

OSB, O-1 Grade, and Waferboard, R-1 Grade

6.35

7.9

CSA O437.0

Phenolic, faced

25

25

CAN/CGSB-51.25-M

Plywood (exterior type)

6

7.5

CSA O121-M

CSA O151

CSA O153-M

Polystyrene, Types 1 and 2

38

38

CAN/ULC-S701

Polystyrene, Types 3 and 4

25

25

CAN/ULC-S701

Polyurethane and Polyisocycanurate Type 1, faced

38

38

CAN/ULC-S704

Polyurethane and Polyisocycanurate Types 2 and 3, faced

25

25

CAN/ULC-S704

Notes to Table 9.23.16.2.A.:

(1)See also Sentences 9.27.5.1.(2) to (4).

Table 9.23.16.2.B. Rating For Wall Sheathing When Applying CAN/CSA-O325.0 Forming Part of Sentence 9.23.16.2.(1)

Column 1

Column 2

Maximum Spacing of Supports, mm

Panel Mark

400

W16

500

W20

600

W24

9.23.16.3. — Attachment of Cladding to Sheathing

(1) Gypsum sheathing, rigid insulation and fibreboard shall not be used for the attachment of siding materials.

(2) Nails used in attaching the materials listed in Sentence (1) shall be not less than 3.2 mm diam with a minimum head diameter of 11 mm.

Text · e-Laws consolidated snapshot

9.23.16.4. — Lumber Sheathing

(1) Lumber wall sheathing shall be applied so that all ends are supported.

(2) Where lumber wall sheathing is required to provide bracing according to Article 9.23.10.2., it shall be applied with end joints staggered.

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9.23.16.5. — Joints in Panel-Type Sheathing

(1) A gap of not less than 2 mm shall be left between sheets of plywood, OSB, waferboard or fibreboard.

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9.23.16.6. — Mansard Style Roofs

(1) Where the bottom portions of mansard style roofs are vented, the vertical framing members behind the sloping portions shall be considered on the same basis as exterior wall studs and shall conform to the appropriate requirements in Subsection 9.23.17.

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