In Plain Language

Cladding installation must accommodate expansion and contraction, as set out in this article, since materials shrink and swell with temperature and moisture changes and rigid installation can cause buckling or cracking.

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.