The Ontario Building Code | Materials
9.27.13.2. Materials
(1) The materials used in exterior insulation finish systems shall conform to CAN/ulc-S716.1, "exterior Insulation and Finish Systems (EIFS) – Materials and Systems".
(2) The substrate on which an exterior insulation finish system is installed shall,
(a) be compatible with that particular system, and
(b) comply with the structural requirements for sheathing materials set out in Section 9.23.
In Plain Language
Materials for this exterior wall system must conform to the standards referenced in this article.
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.