In Plain Language

The exposed surface temperature of a steam or hot water radiator can't exceed 70 degrees Celsius unless precautions are taken to prevent human contact, protecting occupants (particularly children) from contact burns.

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.