The Ontario Building Code | Exterior Joints
9.37.1.3. exterior Joints
(1) All exterior joints between logs shall be rendered water-tight by methods such as machined joints, oakum packing, cement parging, chinking, caulking or a combination of these.
9.37.2. walls
In Plain Language
Exterior joints between logs must be sealed as set out in this article, addressing this construction method's characteristic gaps between courses.
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.