The Ontario Building Code | Openings in Non-Loadbearing Flat Insulating Concrete Form Walls
9.20.17.3. openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings in Non-loadbearing Flat Insulating Concrete Form walls
(1) No openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings shall occur within 1.2 m of interior and exterior corners of exterior non-loadbearing flat insulating concrete form walls.
(2) Portions of walls over openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings in non-loadbearing flat insulating concrete form walls shall have a minimum depth of concrete of not less than 200 mm over the width of the opening.
(3) openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings more than 600 mm but not more than 3 m in width in non-loadbearingflat insulating concrete form walls shall be reinforced at the top and bottom with one 10M bar.
(4) openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings more than 3 m in width in non-loadbearing flat insulating concrete form walls shall be reinforced on all four sides with two 10M bars.
(5) Reinforcing bars described in Sentences (3) and (4) shall extend not less than 600 mm beyond the edges of the opening.
(6) The cumulative width of openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings in non-loadbearingflat insulating concrete form walls shall be not more than 70% of the length of any wall.
In Plain Language
Openings in non-loadbearing flat ICF walls are addressed in this article, setting the requirements for window, door, and other openings in walls that don't carry structural load.
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.