The Ontario Building Code | Glass Block as a Closure
9.10.13.7. glass Block as a Closure
(1) glass block that has not been tested in accordance with Article 9.10.3.1. is permitted as a closure in a fire separation required to have a fire-resistance rating of not more than 1 h.
In Plain Language
Glass block may serve as a closure under the conditions set out in this article, another option with recognized fire-resistance characteristics for certain applications.
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.