A classic design is to locate a window above a door. The structural component above the door and under the window is known as a transom which is where transom windows get their name. Most often the window is a rectangle with the same width as the door but other shapes, most notably a semi-circle are also popular, especially in older architectural styles.
Transom windows use
While traditionally located above a door, smaller windows above large windows are often referred to as transom windows as well. To some the term means rectangular window, installed length-wise above another window or door. Beveled or stained glass is often used as well. When used above another window they provide added architectural detail and are often associated with a custom or higher end home.
Advantages
Transom windows above a door allow for the privacy of a door while providing light. Hinged transom windows allow for ventilation while a door remains closed for safety. They are commonly used above both interior and exterior doors.
Types
Both fixed (non-opening) and opening versions are widely available. Opening versions are operated by hinges on the top (similar to awning windows) or at the bottom (similar to hopper windows). Because of their location, above another window or door, an “operator” is often needed to open and close a transom window. An operator is typically some sort of rod or mechanism, either attached to the wall or movable, that used to open and close the window.
Transom windows cost
Interior windows typically start around $150 and exterior windows around $400. The price can be significantly more depending on the window material (wood, vinyl, etc.), the number of panes and if it opens.
If you are designing a home or remodeling a home, transom windows are a perfect way to add uniqueness and a sense of style to your home.