In Plain Language

Flared joints require the pipe end to be expanded with a proper flaring tool, and this method can't be used on hard-drawn (rigid) copper tube, only softer, bendable copper.

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.