Minimum Egress Window Size Ground Floor

The minimum egress window opening height is 24 high.

Minimum egress window size ground floor. Minimum window sill heights according to the 2018 irc all windows that are more than 6 feet above the grade outside the window must have a bottom opening a minimum of 24 inches above the room s interior floor. The overall size of this smallest double hung egress window is 14 85 sq. Clear opening width 20. Start by installing egress basement escape windows in your basement egress windows increase light and livability in your basement and substantially increase the value of your home.

Measure from the maximum grade level ground level down to the floor level of the basement. The minimum opening area of the egress window is 5 7 square feet. Egress window well size needed. 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.

Does not apply in all jurisdictions. To meet egress a window must comply with all four irc requirements. This gives you dimension a in inches. The base of the well can be no more than 44 inches above the bedroom floor.

Clear opening width 20 clear opening height 24 minimum clear opening sq ft 5 7 sq ft. They also need to be relatively large to meet the minimum size requirement for egress windows needing a space 28 inches to 60 inches wide and 23 5 inches to 60 inches high. 2nd floor and above. Minimum size gliding egress window gliding windows with horizontally sliding sashes that always fill half the possible window opening area also have to be big to meet egress requirements.

Egress window well code requirements. Sliding egress windows gliding or sliding egress windows slide open horizontally like sliding glass doors and must be at least 4x4 square feet to meet requirements. Egress window size needed measuring for an egress well. Subtract 28 from dimension a to get the minimum required height of the egress.

The required opening size must be met by normal operation without requiring any tools or special knowledge for the window to open. To qualify a basement window as an egress you may also have to install window wells to enlarge windows and allow access. The minimum egress window opening is 20 wide. Maximum sill height above the floor 44 1st floor.

If the sill is below ground the window itself will need larger dimensions 9 square feet. According to a 4 year study by the national fire protection association an average of 130 people were killed and 940 injured in below grade residential fires each year and an average of 18 200 fires a year were. Irc codes for egress. Also an egress window requires a minimum net clear opening of 5 7 feet or five feet if it is on the ground floor and a maximum sill height of 44 inches above the floor.

The trickiest part is the window egress. Ft almost twice the area of the egress casement window shown.