What is the difference between mullion and transom

Mullions can be vertical or horizontal pieces. On a detailed hollow metal frame, for example, a mullion will separate pieces of glass, panels, or will separate a door and the glass or panels. On a pair of doors a mullion can separate the two doors from each other. A mullion — muntin molding is a slender vertical dividing moulding between the lights of windows, screens, and doors.

When used to divide adjacent window units, its primary purpose is to provide good structural integrity and support to the arch, horizontal beam, or lintel above the window opening.

A mullion refers to the vertical piece of wood separating the panes of glass, not both the verticals and the horizontal stile pieces.

Today, mullions are the vertical bars between the panes of glass in a window. As with muntins, their role is primarily decorative now.

A transom window is a bar which is found over the top of a window or door, segregating the main glazing panel and decorative ones which are commonly installed above a window. Transom windows originated in 14th Century Europe, and were commonly installed a doorframe to let in fresh air and natural light.

Mullions also occur on the surface of quartz pods in micaschists. The formation of pencil structures occurs as a result of discrete interference between compaction cleavage and a subsequent tectonic cleavage, or between two equally developed tectonic cleavages. Muntins are the narrow strips of wood that divide the individual panes of glass in a traditional sash.

Textured, frosted, mullion or frameless, glass-fronted cabinet doors are a great compromise between open shelving and solid, door-enclosed cabinetry. They keep out dust and debris that affect open shelving while helping to open your kitchen up visually.

Simply put, structural glazing is term used to describe glass that is integral to the design of a building: It involves large glass panels, which usually bear some weight in the structure.

Structural glazing can be used to create huge glass installations with minimal obstruction. Why would Glass Panels be above Doors? After a quick look on Google, I discovered that, in fact, these glass panels are actually referred to as Borrowed Lights and their purpose is to allow light into rooms that do not otherwise gain much naturally. Hallways can sometimes be dark, these windows allow light in with the opening type allowing draught free air in to feed a fire, an old house I lived in had letter box type flaps above the doors to allow the doors to close easily and to feed the fire instead of windows.

Transom windows are designed with glass that permits natural light and wind to enter your space just like the patio doors do. But interior designers always suggest covering the transom windows which are located above the patio doors especially when you need complete indoor darkness and privacy. There are two primary types of French doors — those with individual panes of glass separated by mullions and single-pane doors with a wood grid attached to create the illusion of multiple panes. Judge vs.

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Villainize vs. Catagory vs. Correspondance vs. You can easily find mullioned windows on Gothic cathedrals, heritage properties and church architecture. Historically, they were installed to support the glazing, however, nowadays modern mullion windows are added to a property for a decorative purpose. A transom window is a bar which is found over the top of a window or door, segregating the main glazing panel and decorative ones which are commonly installed above a window.

Transom windows originated in 14th Century Europe, and were commonly installed a doorframe to let in fresh air and natural light. They have emerged in popularity with homeowners nowadays looking to add additional style to new windows and doors, as well as to create a brighter atmosphere in their homes.

Transom windows used to have a purpose of adding additional ventilation to a building as they are fitted higher than a typical window or door, meaning air currents can easily enter the rooms when the sashes are opened. When the transom is closed, the temperature can be regulated and kept consistent. Nowadays, it is uncommon to find transom windows which open at all as they only serve a decorative purpose, rather than a functional one.

However, if you are looking for transom windows that open, we can easily install this as part of your new windows. You can choose the appropriate opening mechanism to suit your rooms, maximising your home privacy, air ventilation and natural light. Mullions and transoms can be found on a variety of window materials, including uPVC , timber and aluminium windows. Often building regulations, structural implications or simply budget constraints mean that it would be impractical to fill a window space with one large pane of glass.

Mullions and transoms make it possible to divide windows into adjacent units or panes. The use of angles, inserts, support metal and drilled anchors fix the mullion structure to the building securely.

This transfers weather force away from the window glazing and onto the structure of the building.