Construction codes of Ontario

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Lapped Strip Siding

Lapped Strip Siding (1) Hardboard applied in horizontal lapped strips shall have not less than a 5 mm gap provided at the butted ends, which shall be caulked or otherwise protected with suitable mouldings. (2) The horizontal joints of siding described in Sentence (1) shall overlap not less than 1 mm per 16 mm width of siding […]

Laying Temperature of Mortar and Masonry

Laying Temperature of Mortar and Masonry (1) Mortar and masonry shall be maintained at a temperature not below 5°C during installation and for not less than 48 h after installation. (2) No frozen material shall be used in the mortar mix. Article 9.20.14.1 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Lintels or Arches Masonry

Lintels or Arches Masonry (1) Masonry over openings shall be supported by steel, reinforced concrete lintels or masonry arches designed to support the imposed loads. (2) Except as provided in Sentences (3) and (6), steel angle lintels supporting masonry above openings shall conform to Table 9.20.5.2.A. (3) Steel angle lintels supporting masonry veneer above openings shall […]

Location of Flashing

Location of Flashing (1) Flashing shall be installed in masonry and masonry veneer walls, (a) beneath jointed masonry window sills, (b) over the back and top of parapet walls, (c) over the heads of glass block panels, (d) beneath weep holes, and (e) over the heads of window and door […]

Location of the Vapour Barrier

Location of the Vapour Barrier To prevent condensation from forming within building envelope assemblies, materials that act as vapour barriers (vapour retarders), including certain types of insulation, must be located within the assembly so that moisture moving from the inside to the outside does not condense and accumulate within the assembly. This means that vapour […]

Loose Steel Lintels for Masonry – No. & Size of Angles Required(6) (7)

Loose Steel Lintels for Masonry – No. & Size of Angles Required(6) (7) Table 9.20.5.2.A.Loose Steel Lintels for Masonry – No. & Size of Angles Required(6) (7) Forming Part of Sentence 9.20.5.2.(2) Notes to Table 9.20.5.2.A.: (1) See Sentence 9.20.5.2.(4). (2) Omit floor load in lintel when distance to bottom of floor construction is greater than width […]

Lumber Siding

Lumber siding should be sound and free of knotholes, loose knots, checks or splits. Cedar and pine are the most commonly used species. It has also become more common to use pressure-treated lumber for siding or wood that has been factory-finished with stain or paint. The finish should cover the front and back surfaces of […]