Irc codes for egress.
Egress window dimensions uk.
From the 1 july 2000 the requirement for means of escape from dwellings has been amended to improve means of escape from all new dwellings and extensions.
See below for the general criteria for egress windows.
Note that a window opening that s the bare minimum of 24 in.
To meet egress a window must comply with all four irc requirements.
Maximum sill height above the floor 44 1st floor.
Means of escape requirements.
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.
Only one window per room is generally required.
Window wells greater than 44 inches in depth requires a permanently fixed ladder or steps to provide access.
Clear opening width 20.
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.
For many casement windows you ll need to order egress hardware which allows the window to not only swing open but also swing away.
Emergency egress windows means of escape from dwellings.
Casement windows are minimally 2 4 wide by 3 4 high.
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.
Wide does not meet egress requirements since its net clear opening is only 3 33 sq.
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.
Does not apply in all jurisdictions.
The minimum opening area of the egress window is 5 7 square feet.
The square footage must be configured with a minimum height of 24 inches and minimum width of 20 inches.
20 20 5 21 21 5 22 22 5 23 23 5 24 24 5 25 25 5 26 26 5 27 27 5.
Clear opening width 20 clear opening height 24 minimum clear opening sq ft 5 7 sq ft.
Clear openable area no less than 0 33m.
Permanent ladder or steps cannot encroach the required window well dimensions by more than 6 inches.
A window has to be taller and or wider than these minimums to meet the 5 7 sq ft opening requirement.
Width and height either of these are not to be any less than 450mm.
Cill height the bottom of the openable area should be no more than 1100mm above the floor area.
The minimum egress window opening height is 24 high.
2nd floor and above.
High and 20 in.
If you have a window with an open height of 34 then the minimum open width would have to be 24.
This would mean that a window width of 20 inches would require a height of 41 inches.
Height and width requirements in inches to meet the 5 0 sq.
The minimum egress window opening is 20 wide.
