Egress Window Size For Basement

For ventilation the window s clear open area in square feet must be at least 4 of the total floor area that the egress window is servicing.

Egress window size for basement.

In addition the egress window requirements for basements specifies that they be at least 36 inches in height and width with a fully functioning opening. Make sure the basement window well has enough area to move around in and if the well is especially deep make sure you have a ladder attached to it for an easy getaway. If the basement area you wish to have serviced by an egress window is larger than this 8 rule allows you can use multiple egress windows to achieve the minimum 8 of glass area for natural light. To meet irc standards egress openings must have.

Provided the minimum net clear opening size complies with sections r310 1 1 to r310 1 3 and such devices shall be releasable or removable from the inside without the use of a key tool or force greater than that which is required for normal operation of the escape and rescue opening. This height requirement takes it out of the running for most basement egress situations. When the sill height of an egress window is located below grade common for egress windows provided for a basement a window well must be provided. The minimum opening area of the egress window is 5 7 square feet.

Since you re below ground you have to make sure that the window can still fully open without obstruction. Window well size the area of a window well shall not be less than 9 square feet with a horizontal length width of no less than 36 inches. Basement egress window requirements the bottom of the egress window opening can t exceed 44 from the finished floor. This means that to meet egress window height requirements a bedroom window must be nearly 4 ft.

Wide and 4 ft. A minimum net clear opening of 5 7 feet the actual free space that exists when the window is open or the size people can crawl through opening width of at least 20 inches opening height of at least 24 inches. Basement egress windows have special requirements. Basement and bedroom egress windows must have an area that is not fewer than 3 8 ft.

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. Bedroom or basement egress windows must be no less than 15 inches ca. Basement window requirements for egress. To ensure you install the right egress for your basement we ll break down the residential window well code requirements you ll need to abide by.

The horizontal area of the window well needs to be a minimum of nine square feet with a minimum horizontal projection and vertical width of 36 inches. 38 cm in dimension.