PART 5 — ENVIRONMENTAL SEPARATIONUpdated for the 2024 Ontario Building Code
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5.3.1.2.Properties to Resist Heat Transfer or Dissipate Heat (See Note A-5.3.1.2.)
(1) Taking into account the conditions on either side of the environmental separator, materials and components installed
to provide the required resistance to heat transfer or the means implemented to dissipate heat shall provide sufficient
resistance or dissipation,
(a) to minimize surface condensation on the warm side of the component or assembly,
(b) in conjunction with other materials and components in the assembly, to minimize condensation within the
component or assembly,
(c) in conjunction with systems installed for space conditioning, to meet the interior design thermal conditions for the
intended occupancy, and
(d) to minimize ice damming on sloped roofs.
(See Note A-5.3.1.2.(1))
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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.