In Plain Language

Heated crawl spaces have their own ventilation requirements set out in this article, differing from unheated crawl spaces since this space is treated more like conditioned interior space.

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.