The Ontario Building Code | Caulking at Door and Window Frames
9.20.13.11. Caulking at door and window Frames
(1) The junction of door and window frames with masonry shall be caulked in conformance with Subsection 9.27.4.
In Plain Language
Caulking is required at door and window frames set into masonry, as set out in this article, sealing this common point of water and air infiltration.
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.