The Ontario Building Code | Substrate
9.30.6.1. Substrate
(1) Ceramic tile shall be set in a mortar bed or applied to a sound smooth base with a suitable adhesive.
(2) panel-type subfloor to which ceramic tile is to be applied with adhesive shall have its edges supported according to Article 9.23.14.3.
Section 9.31. Plumbing Facilities
9.31.1. Scope
In Plain Language
The substrate for this flooring type must meet the requirements set out in this article, ensuring a suitable base for installation.
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.