The Ontario Building Code | Obstructions not Permitted
3.15.5.1. Obstructions not Permitted
(1) A sign shall not be located so as to obstruct openings required for light and ventilation, any required means of egressor required access for firefighting in accordance with Sentence 3.2.5.3.(2).
In Plain Language
A sign can't be positioned so it obstructs openings required for light and ventilation, any required means of egress, or the firefighting access required elsewhere in the Code.
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.