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Interior Transom Window Over Door

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.

STANDARD: Transoms over doorways in a hall help create a common sense of style

 

STANDARD: Taller transoms featuring pattern CT-3 match the taller walls in this dining room

 

Customized, Video-Based Instructions!
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Measure & Plan
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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.

An open transom window in the winter helped heat from the central fireplace reach bedrooms at night. In the summer, windows were opened at the front and the rear of the home to create airflow. Open transoms in the main hallway helped suck warm air from the bedrooms cooling them down.

With modern heating and air conditioning, most modern transoms are fixed (non-operating). However, we continue to offer operable transoms as an authentic and nostalgic customization option.

OPERATING: Operating, chain and latch transom brings sophisticated charm to hallway

 

OPERATING: Airflow between bedroom and hall fostered by an operating transom

 

OPERATING: A pivot-hinged operating transom into a pantry

 

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.

As in the picture immediately below, the most common reason for a taller mull is to coordinate with the size of the casing around the door. As below, when the mull and casing are the same size you can foster a sense of balance in the design.

TALLER MULL: Trim around a door and transom in perfect balance

 

Although a taller mull can be implemented for most any profile of casing around the adjoined door, doorways with 1x4 flat casing seem to best benefit with a mull height that is coordinated with the casing width.

TALLER MULL: Transom brings light to an adjacent hallway without sacrificing privacy

 

TALLER MULL: Taller mull with non-flat casing (RB-3) still works but is not as common

 

Planning your transom is
Easier than you think.

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!

POCKET DOOR: Pocket door to pantry with operating transom exudes style

 

Pocket doors are most common when the door placement is in the center of the room -- where door storage is a problem.

The picture below shows how adding a transom window above a pocket door can transom the doorway from a problem solver to the centerpiece of the room.

POCKET DOOR: A perfectly executed transom over a pocket door in the center of a wall

 

POCKET DOOR: Another pocket door where the transom helps connect the two rooms together

 

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