The Ontario Building Code | Surface Requirements
7.2.2.1. surface Requirements
(1) Except for the area designed to be slip proof in such fixtures, every exposed area of a fixtureshall have a smooth, hard corrosion-resistant surface that is free from flaws and blemishes that may interfere with cleaning.
In Plain Language
Except for intentionally slip-resistant areas, every exposed area of a plumbing fixture must have a smooth, hard, corrosion-resistant surface free from flaws, supporting both hygiene and easy cleaning.
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.