Construction codes of Ontario

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Minimum Lumber Grades for Specific End Uses – Table

Table 9.3.2.1.Minimum Lumber Grades for Specific End Uses Forming Part of Sentences 9.3.2.1.(1) and 9.3.2.2.(1). Table 9.3.2.1 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Minor Combustible Components

(1) The following minor combustible components are permitted in a building required to be of noncombustible construction: (a) paint, (b) self-adhesive tapes, mastics and caulking materials applied to provide flexible seals between the major components of exterior wall construction, (c) fire stops conforming to Sentence 3.1.9.1.(1) and fire blocks conforming to Article 3.1.11.7., […]

Nailing Flooring Wood Strip

Nailing Flooring Wood Strip (1) When nails are used, wood strip flooring shall be toe nailed or face nailed with at least one nail per strip at the spacings shown in Table 9.30.3.3., except that face nailed strips of more than 25 mm in width shall have at least two nails per strip. (2) Face nails shall […]

Nailing of Wood Strip Flooring Table

Nailing of Wood Strip Flooring Table 9.30.3.3. Forming Part of Sentence 9.30.3.3.(1) Notes to Table 9.30.3.3.: (1) See Article 9.30.3.4. Table 9.30.3.3 Ontario Regulation 332/12 Building Code, O. Reg. 332/12: BUILDING CODE (ontario.ca) © Queen’s Printer for Ontario, 2021

OSB, Waferboard and Plywood Marking

(1) OSB, waferboard and plywood used for roof sheathing, wall sheathing and subflooring shall be legibly identified on the face of the material indicating, (a) the manufacturer of the material, (b) the standard to which it is produced, and (c) that the material is of an exterior type. Article 9.3.2.4 Ontario Regulation 332/12 […]

Panel-Type Underlay Flooring

Panel-Type Underlay Flooring (1) A panel-type underlay shall be provided under resilient flooring, parquet flooring, ceramic tile, felted-synthetic-fibre floor coverings or carpeting laid over lumber subflooring. (2) A panel-type underlay shall be provided under resilient flooring, parquet flooring, felted-synthetic-fibre floor coverings or carpeting on panel-type subflooring whose edges are unsupported. (3) Panel-type underlay shall be provided under ceramic […]

Panel-Type Underlay Materials and Thickness

Panel-Type Underlay Materials and Thickness (1) Panel-type underlay shall be not less than 6 mm thick and shall conform to, (a) ANSI A208.1, “Particleboard”, (b) CAN/CGSB-11.3-M, “Hardboard”, (c) ANSI/HPVA HP-1, “Hardwood and Decorative Plywood”, (d) CSA O121, “Douglas Fir Plywood”, (e) CSA O151, “Canadian Softwood Plywood”, (f) CSA O153, “Poplar […]