What are In-swing Egress Windows?
- As the name implies they are windows that open into the room rather than out into an egress well.
- In-swing Egress Windows are legal to use by code in residential settings as an emergency escape because all residential doors also open in to your house.
What are the advantages of In-swing Egress Windows over Out-swing Egress Windows?
One major advantage is it eliminates the interference caused by well cover when an outswing egress window partially sticks above the top surface of an egress well. The window cannot be cranked open into the well because it is blocked by the cover.
- This interference eliminates the ability to cover an egress window well to meet local code requirements.
The second advantage of an in-swing egress window is a minimum sized 36” wide x 36” projection; 9 square foot egress well can be used when space to install a well is limited.
- Code requires an egress well to have a minimum of 9 square foot of clear surface area plus a 36” projection off the foundation wall, meaning a well as small as 36” wide x 36” projection can be used if nothing reduces the surface area.
- For out-swing egress windows the width is measured from one side of the well to the inside surface of the window when it is open 90 degrees into the well. This eliminates the area from the inside face of the window to the side of the well it opens toward from the 9 square foot calculation requiring a well wider than 36” must be used to meet code.
- However, when an In-swing Egress Window is used the clear surface area is measured from one side of the well to the other side of the well allowing the use of a smaller 36” x 36” Compact Egress Well.
What types of In-swing Egress Windows are available?
There are two types of residential In-swing Egress Windows available. The first type of is a single hung compact in-swing egress window opening in two ways; one from the bottom with a screen like a standard double hung window; and the second by in-swinging a frame with both the top and bottom sashes into the room like a door. The major advantages are;
- Being able to open only the lower sash for ventilation.
- Being able to count the full open area of both the top and bottom sashes to meet the 5.7 square foot clear area requirement of the IRC Code for windows
- Only needing to open in to the room during a fire emergency not for ventilation.
- It is also the easiest for young children to open because it only has one locking handle positioned low on the frame and it doesn’t require the removal of the screen to exit.
The second type of window is a casement in-swing egress window that opens in to the room with a full screen.
- Due to its narrow 2” frame size this window it meets the 20” minimum clear width requirement of the IRC Code while having the narrowest outside width dimension in the market place of 27” wide.
- Also due to the narrow frame size it meets the 24” minimum clear height requirement of the IRC Code while having the lowest outside height dimension in the market place of 28 1?2” high.
Compact Single Hung In-swing Egress Window
Compact Egress Window in Egress Well Casement In-swing Egress Window in a 36” wide Deluxe Compact Egress Well