Construction codes of Ontario

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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., […]

Mortar and Grout Mixes

Mortar and Grout Mixes (1) Mortar types shall conform to Table 9.20.3.2.A. (2) Mortar for glass block masonry shall be, (a) Type S Portland cement-lime where exposed to the exterior, or (b) Type S or N where protected from the exterior. (3) Mortar mix proportions shall conform to Table 9.20.3.2.B., with sufficient water to bring the […]

Mortar Droppings

Mortar Droppings (1) Cavity walls shall be constructed so that mortar droppings are prevented from forming a bridge to allow the passage of rain water across the cavity. Article 3.4.5.9 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Mortar Joints Thickness

Mortar Joints Thickness (1) Except as provided in Sentence (2), mortar joint thickness for burned clay brick and concrete masonry units shall be 10 mm. (2) Permitted tolerances in head and bed joints shall be -5 mm to +10 mm. Article 9.20.4.1 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes […]

Mortar Materials

Mortar Materials, (1) Cementitious materials and aggregates for mortar and grout shall comply with CSA A179, “Mortar and Grout for Unit Masonry”. (2) Water and aggregate shall be clean and free of significant amounts of deleterious materials. (3) Lime used in mortar shall be hydrated. (4) If lime putty is used in mortar, it shall be […]

Mortar Use Table

Mortar Use Table 9.20.3.2.A.Mortar Use Forming Part of Sentence 9.20.3.2.(1) Table 9.20.3.2A. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Non-Conforming Chases or Recesses

Non-Conforming Chases or Recesses (1) Chases or recesses that do not conform to the limits specified in Articles 9.20.7.1. to 9.20.7.3. shall be considered as openings, and any masonry supported above such a chase or recess shall be supported by a lintel or arch as provided in Article 9.20.5.2. Article 9.20.7.4 Ontario Regulation 332/12 Building Code, […]