The Ontario Building Code | Sliding Doors
3.4.6.14. Sliding doors
(1) Except as permitted by Sentence (2) an exitdoor leading directly to outdoorref ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doors at ground level is permitted to be a sliding door provided it is released in conformance with Sentence 3.3.1.11.(1).
(2) An exit door serving a Group B, Division 1 occupancy, or an impeded egress zone in other occupancies, is permitted to be a sliding door that does not conform to Sentence 3.3.1.11.(1) provided it is designed to be released in conformance with Article 3.3.1.12.
In Plain Language
An exit door leading directly outside at ground level is permitted to be a sliding door if it releases automatically per the referenced release provisions, though certain high-risk occupancies like Group B, Division 1 have stricter limits.
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.