Useful glossary of window terminology

While we’re experts here at Unicorn Windows, we appreciate that there could easily be a few terms that our customers might not be familiar with. Knowing what distinguishes one window from another is an important part of the process when shopping around for your windows and doing your research. An awareness and understanding of the different window elements and styles will make choosing window and door options a great deal easier.

So here is a list of handy terms that you should hopefully find useful!

Lite – Each single surface of the glass.

Sash – The main movable part of the window.

Hardware – Thing like handles, locks, hinges and pulls. Any parts that are a component of the window and work to operate it.

Blindstop – This is the frame section on a double hung window. The blindstop forms a rabbet that supports either a sash or screen.

Cladding – The extruded aluminum section that covers the exterior wood parts of the window. The core function of cladding is to help protect the window against the elements.

Glazing – The glass within a window or a door. So double glazing would be two panes, tripe would be three and so on. Your functional requirements will determine the extent of the glazing you need.

Frame – There are three sections to the frame of the window. The header across the top, the sill across the bottom, and the vertical jambs along the sides (which also hold the sash in place).

We thought it would also be useful to give you a few examples of the types of core window styles.

Glider Windows – Windows that open and feature a horizontally gliding sash.

Casement Windows – Casement windows open and close from the side. The sash forms a seal around the frame when the windows are shut, which increases energy efficiency.

Bay Windows – A bay window can be designed in multiple angles and is able to provide an unobstructed and larger view of the outdoors than that of a regular window. Many people opt for bay windows/doors into their garden or conservatory.

Awning Windows – These windows swing open from the bottom. The advantage of awning windows are that you can let in fresh air in – even when there’s bad weather – without worrying about letting rain in.

Cottage Window – A window with unequal sash, top and bottom.

Direct Glaze – This is a window with no sash. The glass is glazed directly into the frame and doesn’t move.

French Door – French Doors are outswinging or inswinging and typically come in rectangular or arch top style variations.

So there you have an array of terms and examples of the types of windows available on the market. We really hope you have found them helpful. And of course, for any questions about our work and services, please don’t hesitate to contact us!

Photo by Paul Flint & Company

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