PART 5 — ENVIRONMENTAL SEPARATIONUpdated for the 2024 Ontario Building Code
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5.8.1.1.Required Protection
(1) Except as provided in Sentence (2), a dwelling unit shall be separated from every other space in a building in which
noise may be generated by
(a) a separating assembly and adjoining constructions, which, together, provide an apparent sound transmission class
(ASTC) rating not less than 47, or
(b) a separating assembly that provides a sound transmission class (STC) rating of not less than 50 and adjoining
constructions that conform to Article 9.11.1.4.
(2) Construction separating a dwelling unit from an elevator shaft or a refuse chute shall have an STC rating not less than
55.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.