The Ontario Building Code | Plumbing
11.4.2.4. Plumbing
(1) The performance level of an existing buildingis reduced where the existing building is extended or subject to material alteration or repair, and plumbingin the existing building is adversely affected by the extension, alteration or repair.
In Plain Language
Plumbing systems affected by a renovation must meet the requirements set out in this article.
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.