Windows / Transom
Transom window installation
A transom is the window that sits above a door or another window. It borrows the wall height above the opening for extra daylight, and in older homes an operable transom over an interior door moved air between rooms.
How it works
Most modern transoms are fixed for weather-tightness, especially over an exterior door. Some interior transoms and specialty units are operable, hinged at the top or bottom. Shapes range from a simple rectangle to a half-round or elliptical arch.
Where it fits well
- Over an entry door, to add light to a foyer and give the entry more presence
- Above picture or patio units to raise the glass line
- Matching a period detail on an older home
What to weigh
- Structural: adding a transom above an existing door means raising the header, which is framing work
- Specialty shapes are custom-order items with a longer lead time
- Usually specified together with the door or window below it so the sightlines line up
Questions
Transom — good to know
Can you add a transom over my existing front door?
Sometimes, if there is wall height to work with and the framing allows the header to be raised. It is most straightforward to do as part of an entry-door replacement. Your estimator will tell you what is feasible.
Are transom windows operable?
Exterior transoms are almost always fixed. Some interior and specialty transoms open. Tell us if venting matters for your application.
Other window styles
More window styles
Next step
A better view starts here.
Tell us what's going on with your windows or doors. We'll come look, measure, and give you honest pricing — free, and no obligation.
Free in-home estimate · Westchester · Putnam · Fairfield