
How to install transom windows?
Transom windows can be installed by themselves (as interior windows), or as decorations above doors and cased openings. Standard carpentry tools such as nails and hammers are needed, as well as a few simple components to frame the transom. In addition to the cased opening components, it is necessa
How much does it cost to install a transom window?
Transom windows installation cost is around $75 – $200 per opening. This price can also vary extensively depending on the kind of renovations your walls will need. If you’re replacing transom windows on a renovated older house, you can find window models that will suit any budget.
How to repair transom windows?
Transom Resources
- Historic Houseparts New & salvaged transom hardware; vintage transom windows
- House of Antique Hardware Reproduction sets in brass, cast iron & steel; latches, hinges
- Transoms Direct New transom windows; some hardware
- Vintage Hardware & Lighting Solid-brass transom hardware in many finishes, also adjustable & extra-long; latches & hinges
How to install an opener for a transom window?
- For new construction or renovations, rough openings are the most common starting point.
- You may be planning a new opening that you have not created yet. ...
- If you have a completed home, you may be able to retrofit a transom into an existing finished opening.
- Two types of finished openings are cased openings and drywalled openings. ...

What is the purpose of a transom window?
Transoms historically were used to allow passage of air and light between rooms even when doors were shut. They make perfect sense in row houses, which typically have long, narrow floor plans with windows only at the front and back. This house originally had four transom windows; all were painted shut.
Are transom windows good?
Transom Windows Add Natural Light One of the biggest benefits of transom windows is that they help bring added light into a space. This is particularly nice in a room that does not have too many windows around the door.
What is a transom style window?
Transom windows are named as such because they are located over top of a window or door's transom– this is the beam that separates the top of the window or door from the rest of the wall. Consequently, transom windows can come in many different shapes, styles and designs, but retain the name due to their location.
Are transom windows outdated?
Though transom windows fell out of fashion in the 1970s and 1980s, homeowners now are rediscovering how they can add a distinctive touch to a space—not to mention a little more natural light.
Should you put blinds on transom windows?
If you cover the transom with shades, blinds or even plantation shutters, it will keep your room bright at night. The reason is light travels in a straight line until it bounces off a surface . Covering the transom will allow the light to bounce back inside the room, thus making it brighter and more illuminated.
What is the difference between a transom window and a clerestory window?
Clerestory windows are often confused with transom windows. Transoms are ganged directly above a door or window. Both admit daylight from above. Clerestory windows generally draw daylight deeper into a space since they themselves are usually positioned deeper within a space.
What is a transom in sash window?
Transom windows are windows, either fixed or operable, that are placed above a window or door with a beam, bar or structure crosspiece separating the two. Transom windows allow more light in and can also allow for greater air circulation flexibility.
What is the small window above a door called?
TransomCustomization - Operating Transom Historically, operable transom windows above doors played a role in the heating and cooling in a home. Operable transoms have sashes that can be opened or closed to help regulate the temperature in a room when the door is closed.
How many types of transom are there?
The above three types represent the topside. In addition to those mentioned above, there are numerous other special forms. Other types of stern include raked (or transom raked), transom flat, sugar scoop, lute stern & bustle stern etc.
Why do old houses have windows above doors?
Transom windows are those panels of glass you see above doors in old homes, especially those built in the Mission or Arts and Crafts styles. They admitted natural light to front hallways and interior rooms before the advent of electricity, and circulated air even when doors were closed for privacy.
How do I get rid of transom windows?
Easy diy job to remove the transom glass panels, just need to remove the beading around the glass on one side, do tape the glass both sides before starting removing, it's usually thin glass & easily breaks, lay a dust sheet on floor to contain broken glass, easier to clear up.
What is a window between rooms called?
Transoms or interior windows between rooms can add interest to a wall and share light between the two rooms.
What is a transom window?
The most traditional and widely recognized transom window style is a semicircular window with dividers separating the panes in equal radius. This style of transom window is sometimes referred to as a fanlite. The second most popular style is a simple rectangular shape.
Why are transom windows called transom windows?
Transom windows are named as such because they are located over top of a window or door’s transom- this is the beam that separates the top of the window or door from the rest of the wall. Consequently, transom windows can come in many different shapes, styles and designs, but retain the name due to their location.
What is the second most popular window style?
The second most popular style is a simple rectangular shape. Windows can even be custom made to fit certain spaces. This can be especially important if the ceiling above is angled. The options available for frame color and material and glass type are as endless as they are for doors and other types of windows.
Can a transom window be installed on an interior wall?
The purpose of a transom window dates back to the days when air conditioning had not yet been invented. Back then, transom windows were opened and closed to allow ventilation from the outside to inside, and from room to room within homes or businesses—yes, transom windows can be installed on interior walls as well as exterior walls.
Can you have a matching door and frameset with a transom window?
When looking at transom window options, you may opt for a matching door and frameset that can include a pre-mounted transom window.
Do transom windows allow light?
Sometimes transom windows are strictly aesthetic. Other times they allow in additional light. If they’re operable (open and close on hinges), they are very functional- letting air to flow in and out of a room while still allowing the door to be kept closed for privacy and security. Reply.
Can you add a transom window to a house?
Transom windows can be added to your home in a number of ways. The easiest installation method is during the design phase of new construction when it is possible to ensure that openings and support beams allow for a transom window to be installed. However, transom windows can be added to existing homes as well.
How to make a transom window operational?
To make a transom window operational, the goal is to install it so that the window can be opened to a 30-degree angle or so. That’s enough to allow airflow without making the window hard to open or close. Bringing light and air to the vestibule, this restored transom window and operator are at the row house entry.
Why are transom windows important?
Transoms historically were used to allow passage of air and light between rooms even when doors were shut. They make perfect sense in row houses, which typically have long, narrow floor plans with windows only at the front and back.
What are the mechanisms of a transom?
They include bottom-hinged transoms with latches and chains that had a long pole to pull the latch open; side-hinged transoms that opened like doors; and top-hinged transoms with fixed lifts that could be hand-operated.
Where is the pinch clasp on a lift?
• the spring pinch clasp that sits near the bottom of the lift and allows the operator to set the open/closed position of the lift. (This piece mounts to the wall and provides the lower support.)
What is a Transom Window?
A transom window is a decorative window that is placed right above a standard window or door. It's also known as a “transom light” due to its ability to let in more natural light. This type of window is placed above the transom, the beam that separates the top of a window or door from the wall above.
What is the Purpose of a Transom Window?
Before the age of electricity, transom windows also had vital functions. They let in as much natural light as possible so people could take advantage of daylight. Also, transom windows placed above interior doors were able to open and close, providing ventilation in between rooms.
Where are Transom Windows Located?
Transom windows can be located above any door or window in the home. However, they are most commonly found above front doors, windows in places with tall ceilings, and above french door patio windows. In historical homes, they are often placed on top of interior room doors.
Do Transom Windows Open?
Yes, transom windows can open, though many today are purely decoration and do not open. Interior transom windows that can open typically pivot open to allow airflow. Exterior transom windows that can open usually include a screen to keep bugs from entering.
Types of Transom Windows
The majority of transom windows are fixed picture windows, which have large, thick frames and are set in a closed position. These cannot open and are purely for decoration. Transom windows are usually rectangular, but you can also find them in a domed shape, in grids, and decorative glass varieties.
Transom Windows: Are They Right for You?
Transom windows add value to many interiors by allowing more natural light and design into places that need it. There are many styles and sizes on the market to allow a custom choice for your next remodel. Find the perfect transom window to enhance the look and function of your property here.
What is a mullion in a window?
If you don’t know, this horizontal element is a transom. If there’s a vertical thick piece of wood separating windows , it is known as a mullion.
Can transom windows go over doors?
But, let’s get back to transom windows. They can go over any door or window, interior or exterior. The shape can be either rectangular of a semi-circle (arch) or occasionally a square. I have also seen, particularly in European architecture, other shapes such as a camel-shape and others.
Why does a transom window not open?
Typically a transom window used above an entry door does not open, because the area above a door is so hard to reach. Transom windows that open are typically an awning window placed above the transom. Keep in mind, however, that adding new windows in hard-to-reach places will add an additional surface to clean.
What is an interior transom window?
An interior transom window can be used to separate an otherwise open room into two distinct spaces, such as between a kitchen and dining room. They can also appear above interior doors to let natural light flow between rooms - this is an element commonly seen in farmhouse style.
What is a transom?
Transom is an architectural term referring to a transverse horizontal structural beam or bar, or a crosspiece separating a door from a window above it. Not to be confused with a mullion, which is a vertical structural bar.
Why do you need a transom?
Incorporating a transom is a great way to add interest to an otherwise ordinary corner of your home, but there are also a number of practical benefits. For one thing, transom windows add additional light, which can be ideal for entryways. If you have a solid front entry door with no glass elements, a transom is a great way to add additional light ...
Do transom windows have vents?
It’s not uncommon in older homes to see transom windows used above internal doors, in addition to being used above exterior doors. However, many transoms today do not vent.
Can a transom window be used above a window?
Transom windows can also be used above a separate window to add an extra visual element as well as additional natural light. This recent project used an arched transom window to create a stunning view. Transom windows are not necessarily always on external walls, either.
Transom Window
A transom window is a type of window that typically spans the top of a door. Transom windows are often found in older buildings where they were used for natural ventilation, but they can also be found in newer construction
Pros of Transom Window
It is a great way to increase natural lighting in a room. It makes the room look wider and brighter.
Cons of Transom Window
It is hard to clean. You have to use a special kind of cloth or wet the area using a spray. If you do not, it can cause problems such as mold and mildew.
Transom Window FAQs
The function of a transom window spans back to the days when air conditioning was introduced.
What are transoms used for?
And then there are transoms used for adding light. As the day gets darker, this room benefits largely from the extra stream of sun that will beam across the space from above the door. Pretty, pretty and purposeful, purposeful. Lead glass transoms are often used as ornamentation (see the two on the left.
Is a lead transom used for ornamention?
Here's a lead glass transom used pretty much only for ornamention; however, it's large enough and wide enough to add more light into the space. Cary Bernstein Architect. Save Photo. In today's modern architecture, you're likely to come across ventilating transoms in spa-like bathrooms.
How to Use This Page
Each picture below contains a Measure & Plan button. Click this button to go directly to measuring and planning videos for the picture you see.
Standard Installation
Adding a transom above a door allows you to share light between rooms and add distinctive style to the doorway.
Customization - Operating Transom
Historically, operable transom windows above doors played a role in the heating and cooling in a home. Operable transoms have sashes that can be opened or closed to help regulate the temperature in a room when the door is closed.
Variation - Taller Mull
The mull is the joining area or connection space between the transom and the door below. Comparing the pictures below to the pictures above, you can see that making the mull between the transom and the door taller can change the overall style of the combination quite a bit.
Variation - Pocket Door
Pocket doors are a great problem solver when the storage of a door against a wall is problematic. Transoms can easily be placed above pocket doors with a little planning — and they add so much style to an otherwise plain opening!
