In Plain Language

This clause requires all edges of hardboard wall finish to be backed by furring, blocking, or framing wherever there isn't continuous solid backing behind them, preventing unsupported edges from flexing or cracking.

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.