Casement window are designed to open using hinges on the side of the window frame. Hinges are located on the side, top, or bottom, allowing the window to open in the middle – so in the fully open position, you have a full view out of the window opening. This is in contrast to sliding windows, which always block at least half of the frame space.
In traditional casement window designs, a small crank is usually used to open the window, using a mechanical handle on the inside. Outward-sliding casement window styles are also available, which do not require turning a crank to open.
There are several different types of casement windows, including:
Single casement windows: This type of casement window style will occupy a single window frame and may have multiple panels of different sizes – depending on the size of the window opening. Some panels may be different sizes.
Double casement windows: Some people also refer to them as “French casement windows” because they resemble French doors. Double casement windows are a good choice if you want an unobstructed view because there is no sash in the center of the window frame.
Fixed casement windows: Also known as “picture windows,” this type of casement window is unique in that it cannot be opened. Fixed casement windows usually have windows on either side that can be opened.
Casement windows usually open outwards. As the windows are hinged, casement windows are easy to open and close. Whether this window style is right for you depends on the size and shape of your window frame. Casement windows appear very slim on the facade of a building, saving space.
As the leading experts in installing new and replacement casement windows in modern timber and UPVC styles, we can do a great job explaining what casement windows are, the types available and their benefits.
Casement windows offer benefits over most other double glazed window designs you see on buildings. Many casement windows are flush designed, which gives them a unique advantage because while there are also flush sash windows, larger single or double hung sashes are deeper into the sash.
Here are the main benefits of casement windows:
Energy savings: Casement windows have the same glazing options as other designs, so they are a good choice when you need a high energy efficiency rating. In this case, casement windows may have a slight advantage over sash windows because the strong seal they provide can better prevent air leakage.
Customisation: Casement windows come in many different finishes and colour options, including wood grain or coloured UPVC. You can find a variety of materials for casement windows, such as aluminium, which again gives them an edge over sash windows if you want a customisable look.
Safety: Casement windows are very secure, with a sturdy locking mechanism and multiple panes of glass to prevent forced opening. Sliding windows are more prone to accidental opening, while casement windows can be a safer option as even a slight opening will be more noticeable.
Affordability: Casement windows use a very simple mechanism, so there are fewer materials and moving parts. This again gives casement windows an advantage as sliding windows tend to use more complex mechanisms and are more expensive to manufacture.
Low Maintenance: Casement windows are easy to clean both inside and outside, keeping them looking their best all year round. The mechanism of casement windows is also very easy to maintain, especially compared to sliding windows – which use a complex string-based design that can harden or break over time.
Casement windows were popular before sliding windows came along, and they still have many uses today, especially on smaller window frames and for windows in rooms that don’t need to open fully – such as bathroom windows. Casement windows will offer a contemporary style, but they are suitable for both modern and traditional properties.
