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A brief introduction to casement windows

A casement window is one of the most common and versatile styles of window.

The casement style of window first appeared in the UK in the 18th century, when it came to replace older stone mullioned windows and has since become the most popular window style in use.

What is a casement window?

‘Casement’ simply refers to the part of the window that opens. A standard casement window is one that’s fixed into a larger window frame but doesn’t slide up or down, tilt or turn. It more often than not has fixed hinges on either of the long sides so it can be opened 90º outwards, like a door.

Openers can also be added to one side, both sides, top or full frame to provide different degrees of ventilation. The openers will shut with a tight seal for good insulation and energy efficiency.

What do casement windows look like?  

Casements are most easily recognisable by the traditional side-mounted hinges and outward opening. They can be left plain for a modern look and an unobstructed view out, or given a more traditional appearance with glazing bars, single, double or more panels.

Casements can be manufactured in uPVC (the most popular material), timber or aluminium, allowing the materials and colours to more readily suit a contemporary building. In short, different variations of casement windows will suit most properties.

Why choose casement windows

Fitted either singly or in pairs, they open using stainless steel friction hinges which help keep the window open for ventilation, without slamming shut during windier periods. From there you could opt for a double frame or French casement, which are two panel windows that are both side hung. The window has a central mullion with the window handles in the centre and opens outwards to create a large aperture opening.

Other casement opening options

A top hung or awning window opens from the bottom and is hinged at the top. The window swings outwards so rain doesn’t come into the room in wet climates.

A bottom hung or hopper window opens at the top of the frame with a hinge at the bottom, with tilt and turn versions using a bottom hinge. Ideal for apartments and upper floor rooms to allow safe opening.

A fixed casement doesn’t open and is usually part of a configuration that has window openers on either side, and is popular in bay windows.

A picture casement window are large rectangular casement windows that do not open, so called because they’re usually fitted in properties that offer an attractive view,

Where to buy casement windows

Should you be thinking of replacing your current windows, the range of casement windows by The Residence Collection create an individual design statement for your home with a range of luxury colour finishes and hardware options.

We offer flush casement windows that are designed to authentically replicate 19th Century timber designs. The traditionally elegant flush exterior and stylish decorative interior create a classic aesthetic.

Start your Residence Journey and download one of our brochures. Find your local Residence Collection installer using our handy postcode search tool.



At Residence Collection, we have a range of colours available and can offer everything from timeless classics like Grained White to modern favourites such as Eclectic Grey. Don’t forget, we also offer a dual finish that allows you to find windows and doors that look as good from the inside as they do outside.