The Ontario Building Code | Installation
9.22.10.2. installation
(1) The installation of fireplace inserts and hearth mounted stovesvented through the throat of a fireplace shall conform to CSA B365, "installation Code for Solid-Fuel-Burning Appliances and Equipment".
(2) fireplace inserts and hearth mounted stoves vented through the throat of a fireplace described in Sentence (1) may be installed in existing fireplaces only if a minimum thickness of 190 mm of solid masonry is provided between the smoke chamber and any existing combustiblematerials, unless the insert is listed for lesser clearances.
(3) A fireplace insert installed in a masonry fireplace shall have,
(a) a listedmetal chimney liner installed from the insert collar to the top of the chimney, or
(b) a direct sealed connection to the chimney flue where such provision is part of an insert conforming to Sentence 9.22.10.1.(1).
Section 9.23. wood Frame Construction
9.23.1. application
In Plain Language
Factory-built fireplaces must be installed following the requirements set out in this article, typically the manufacturer's listed instructions.
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.