The Ontario Building Code | Required Sealants Required Sealants

(1) Sealant shall be provided where required to prevent the entry of water into the structure.

(2) Sealant shall be provided between masonry, siding or stucco and the adjacent door and window frames or trim, including sills unless such locations are completely protected from the entry of rain.

(3) Sealant shall be provided at vertical joints between different cladding materials unless the joint is suitably lapped or flashed to prevent the entry of rain.