The Ontario Building Code | Occupancy on Roof
3.2.2.13. Occupancy on Roof
(1) A portion of a roof that supports an occupancyshall be constructed in conformance with the fire separation requirements of Articles 3.2.2.20. to 3.2.2.83. for floor assemblies.
In Plain Language
A portion of a roof supporting an occupancy must meet the same fire-separation requirements that apply to floor assemblies generally.
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.