In Plain Language

Where an interior stair extends up through the roof, such as to a rooftop access hatch, this article sets out the specific requirements that apply to that condition.

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.