The Ontario Building Code | Wall Exposed to Adjoining Roof
3.2.3.15. wall Exposed to Adjoining Roof
(1) Except as permitted by Sentence 3.2.3.19.(4), if a wall in a building is exposed to a fire hazard from an adjoining roof of a separate fire compartment that is not sprinklered in the same building, and the exposed wall contains windows within 3 storeysvertically and 5 m horizontally of the roof, the roof shall contain no skylights within 5 m of the exposed wall.
In Plain Language
This clause addresses balconies and their effect on spatial separation calculations, since an open balcony projecting from an exterior wall changes the effective limiting distance and exposed building face area used in the Table 3.2.3.1 calculation.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.