The Ontario Building Code | Fastening
9.29.3.2. Fastening
(1) Furring shall be fastened to the framing or to wood blocks with not less than 51 mm nails.
9.29.4. plastering
In Plain Language
Furring must be fastened as set out in this article, ensuring it stays securely attached to support the finish material applied over it.
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.