5.7.3.3.Waterproofing

(1) Waterproofing materials, components, assemblies, or systems installed to provide the required protection shall form
     a continuous and impervious barrier to the ingress of ground water and be capable of accommodating,
     (a) imperfections, construction joints, control joints and expansion joints, (See Note A-5.7.3.3.(1)(a))
     (b) junctions between different building assemblies, and
     (c) elements penetrating building assemblies.

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.