The Ontario Building Code | Material Standards
9.27.9.1. Material Standards
(1) Factory-finished hardboard cladding shall conform to CAN/cgsb-11.5M, "Hardboard, Precoated, Factory-Finished, for exterior Cladding".
(2) Hardboard cladding that is not factory finished shall conform to Types 1, 2 or 5 in CAN/cgsb-11.3-M, "Hardboard".
In Plain Language
Material standards for this cladding type are set out in this article.
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.