Egress Window Size Ontario Building Code

Windows can be of various total size but their free areas when open must be at least 5 7 square feet.
Egress window size ontario building code. Window wells serving an egress window shall not be less than 9 square feet in area with a horizontal length width of no less than 36 inches. The egress window must have a glass area of not less than 8 of the total floor area of room s for which it is servicing to allow the minimum amount of sufficient natural light. Glass areas for rooms of residential occupancy. To ensure the unobstructed opening meets these criteria you should measure between the sashes jambs sills and opening mechanisms.
Size requirements of the egress window. Following are the requirements of egress window ontario set forth by the nbcc for ontario residents. The minimum egress window opening is 20 wide. No less than 15 inches 380 mm measure your windows between the sashes sills jambs as well as between the opening mechanisms.
Window wells greater than 44 inches in depth requires a permanently fixed ladder or steps to provide access. Area for egress windows. The minimum egress window opening height is 24 high. And sentence 3 the minimum window glass area for rooms in buildings ofresidential occupancy or rooms that are used for sleeping shall conform to table 9 7 2 3.
The sill must be no higher than 44 inches from the ground. The ontario building code egress windows or doors for bedrooms 9 9 10 1. The ontario building code minimum window areas 9 7 2 3. No less than 3 8 ft 2 0 35 m 2 minimum dimension for egress windows.
Minimum window areas 1 except as required in article 9 9 10 1. Specific requirements for egress basement windows in canada the window well size of egress windows in basement must meet the above criteria and also must have an opening with a depth of 30 inches 0 76 m and must be 76 cm from the wall. Requirements of egress bedroom windows. The minimum opening area of the egress window is 5 7 square feet.
Maximum 44 inches to window sill measured from finished floor. Forming part of sentence 9 7 2 3 1.