The Ontario Building Code | General
5.10.2.1. General
(1) This Subsection applies to windows, doors and skylights, including their components, that separate,
(a) interior space from exterior space, or
(b) environmentally dissimilar interior spaces.
(2) For the purpose of this Subsection, the term "skylight" refers to unit skylights, roof windows and tubular daylighting="http://thehandyforce.com/electrical/" title ="East York Electrician">lighting devices.
(3) Where a wireref ="http://thehandyforce.com/electrical/" title ="Electricians in East York">wired glass assembly is installed in a required fire separation, it need not conform to the requirements of this Subsection.
In Plain Language
This Subsection applies to windows, doors, and skylights, including their components, that separate interior space from exterior space or from environmentally dissimilar interior spaces, setting the scope for fenestration requirements.
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.