Maximum sill height above the floor 44 1st floor.
Egress window size uk.
Clear opening width 20 clear opening height 24 minimum clear opening sq ft 5 7 sq ft.
A minimum clear opening width must be at least 20.
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 window should have an unobstructed openable area that is at least 0 33m and at least 450mm high and 450mm wide the route through the window may be at an angle rather than straight through.
To meet egress requirements these horizontally sliding windows must be at least 4 ft.
See below for the general criteria for egress windows.
The window must have.
Casement windows are minimally 2 4 wide by 3 4 high.
Clear opening width 20.
The international residential code irc requires a minimum opening of 5 7 square feet for egress windows.
Wide and 4 ft.
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.
This would mean that a window width of 20 inches would require a height of 41 inches.
For many casement windows you ll need to order egress hardware which allows the window to not only swing open but also swing away.
To meet egress a window must comply with all four irc requirements.
Width and height either of these are not to be any less than 450mm.
Only one window per room is generally required.
2nd floor and above.
Cill height the bottom of the openable area should be no more than 1100mm above the floor area.
The square footage must be configured with a minimum height of 24 inches and minimum width of 20 inches.
Does not apply in all jurisdictions.
Window wells greater than 44 inches in depth requires a permanently fixed ladder or steps to provide access.
Irc codes for egress.
This means that to meet egress window height requirements a bedroom window must be nearly 4 ft.
Clear openable area no less than 0 33m.