PART 5 — ENVIRONMENTAL SEPARATIONUpdated for the 2024 Ontario Building Code

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))

Understand this provision in seconds

BUILDAiD Assist explains any article of the building code in plain English — with exact citations, exceptions and related requirements.

Try BUILDAiD Beta

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.