In Plain Language

Tape used for sealing joints in air ducts, plenums, and other duct system parts must meet the flame-resistance requirements for fabric under the referenced CAN/ULC standard for flame tests.

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.