Smallest Egress Window Size

This makes them ideal for basement egress and for other areas where space is limited.

Smallest egress window size.

It must be at least 5 7 square feet that is at least 20 inches wide by 24 inches high with an opening no higher than 44 inches from the floor. Casement windows are minimally 2 4 wide by 3 4 high. The minimum opening area of the egress window is 5 7 square feet. Let s have a look at the alberta building code abc 2014 criteria that all egress windows must satisfy.

The nbcc details specific size requirements as. For determining egress window sizes and placement the international building code holds that every bedroom must contain at least one egress window. The overall size of this smallest egress casement window is 8 sq. In accordance with the irc requirements the minimum width of the egress window opening is 20 inches.

Also remember that the sill can t be more than 44 above the floor so you may end up with a taller window for a head height over 6 8. The clear opening of the egress window is designed for access out of the house in an emergency situation. 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. The minimum egress window opening height is 24 high.

For many casement windows you ll need to order egress hardware which allows the window to not only swing open but also swing away. The window s sill must not be highers than 44 inches from the floor. Window wells greater than 44 inches in depth requires a permanently fixed ladder or steps to provide access. The minimum height requirement of the opening is 24 inches.

What is the minimum size for egress windows. Unobstructed opening of not less than 0 35 m2 3 77 sq ft in area with no dimension less than 380 mm 15 inches this window should maintain the required opening during an emergency without the need for additional support. For replacement windows a minimum opening size of 5 0 square feet must be met. 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.

Ringer windows casement window systems. Reliabilt 105 series 35 5 in x 59 5 in vinyl egress new construction white single hung window. The minimum egress window opening is 20 wide.