In Plain Language

Where a vent pipe extends above a roof, it must be supported so wind, ice, and general exposure to the elements don't cause it to lean, crack, or pull away from its connection.

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.