The Ontario Building Code | Penetration of Fire Blocks
9.10.16.4. Penetration of Fire Blocks
(1) Wherefire blocks are pierced by pipes, ducts or other elements, the effectiveness of the fire blocksshall be maintained around such elements.
9.10.17. Flame Spread Limits
In Plain Language
Where a fire block is penetrated, such as by wiring or piping, the penetration must be sealed as set out in this article, maintaining the block's effectiveness.
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.