The Ontario Building Code | Termite Protection
9.23.2.5. Termite Protection
(1) Where termites are known to exist, unless pressure-treated with a chemical that is toxic to such termites in accordance with Article 9.3.2.9., wood steps shall rest on a non-cellulosic base or apron extending at least 150 mm above the ground.
(2) wood lattice or skirting around porches shall be separated from piers and soil by at least 50 mm.
9.23.3. Fasteners
In Plain Language
Wood framing needs termite protection under the conditions set out in this article, addressing this pest risk where applicable.
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.