Egress Window Size For Basement

Basement and bedroom egress windows must have an area that is not fewer than 3 8 ft.

Egress window size for basement.

Basement egress windows have special requirements. To meet irc standards egress openings must have. Bedroom or basement egress windows must be no less than 15 inches ca. 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.

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. This height requirement takes it out of the running for most basement egress situations. 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. This means that to meet egress window height requirements a bedroom window must be nearly 4 ft.

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. 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. No egress windows are required in those homes with existing installed sprinkler systems. 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.

To meet egress requirements these horizontally sliding windows must be at least 4 ft. 38 cm in dimension. The minimum opening area of the egress window is 5 7 square feet. 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.

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. Basement window requirements for egress. 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. Since you re below ground you have to make sure that the window can still fully open without obstruction.

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. Wide and 4 ft.