The Ontario Building Code | Clearance
9.27.10.4. Clearance
(1) At least a 3 mm clearance shall be provided between OSB and waferboard cladding and door or window frames.
9.27.11. Metal
In Plain Language
A minimum clearance must be maintained for this cladding material, as set out in this article, similar in purpose to other cladding clearance requirements.
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.