The Ontario Building Code | Fastening of Flashing
9.20.13.2. Fastening of Flashing
(1) Fastening devices for flashing shall be corrosion-resistant and, where metal flashing is used, shall be compatible with the flashing with respect to galvanic action.
In Plain Language
Flashing must be fastened as set out in this article, ensuring it stays securely in place and continues directing water where intended.
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.