Casement Window vs Sliding Window, Is Not Only Different In Appearance!

October 21,2021

Sliding window and casement window are the best selling and most used window types in the market. Recently, many users are obsessed with which kind of window is better: casement window or sliding window. Let's reveal the truth together!


Sliding window


The sliding window adopts the window sash equipped with pulley to slide on the track on the window frame, which is divided into left and right, up and down. It adopts high-grade slide rail, which can be opened flexibly with a slight push. With large pieces of glass, it not only increases the indoor daylighting, but also improves the overall shape of the building. The stress state of the window sash is good and not easy to be damaged, but the ventilation area is limited to a certain extent.




It does not occupy indoor space, beautiful appearance, economic price and good sealing. Sliding windows are generally most suitable for high-rise buildings with more than two floors, because the opening mode is push-pull, and the windows will not be outside like casement windows. In order to avoid falling objects, sliding windows are most suitable for high-rise buildings.




Only 50% of the window sashes can be opened at most, and the air tightness is poor when closed. In recent years, there are improved sliding windows with new technology, which can push multiple window sashes to one side for folding. At the same time, there are also sliding windows to improve air tightness, but generally speaking, they still can not achieve the thermal performance of casement windows, and the energy consumption is high.


Casement window


Casement window is divided into push-pull type and upper suspension type.




Large opening area, good ventilation, good sealing, excellent sound insulation, heat preservation and impermeability. The inner opening is convenient for cleaning windows; The open type does not occupy space when it is opened.




The window width is small and the field of vision is not wide. The opening of the external window takes up a space outside the wall, which is easy to be damaged in strong wind; The internal opening of windows takes up part of the indoor space, and it is inconvenient to use screen windows. If the quality is not up to standard, it may also seep water.


Comparison between sliding window and casement window


📌Scope of application


The casement window is better than the sliding window in performance, but the sliding window is better than the casement window in processing, manufacturing and operation. For this reason, casement windows are widely used in commercial and residential buildings, office buildings, high-grade houses, villas and other medium and high-grade buildings in cities; Sliding windows are widely used in medium and low-grade buildings such as industrial plants and rural houses.




In appearance, the difference between casement windows and sliding windows mainly lies in the matching with the overall style of the building. Because of its great flexibility of division, casement windows can make any line facade effect, and for large division floor to ceiling windows, the opening fan only accounts for a small part of the whole window, so it is more suitable for high-end buildings with strict requirements for the overall effect of the building, It is especially in line with the architect's pursuit of a large grid, spacious and bright, good permeability effect and harmonious and smooth appearance. Because the opening position of sliding window can only be pushed and pulled horizontally, it is difficult to match with the fixed glass with large division. Generally, it is more suitable for business plants or rural family buildings with clear horizontal and vertical lines.


📌Window locks


In fact, there are obvious similarities and differences in window locks. The window lock on the casement window is mainly of the handle type, which is opened and closed by turning the window handle. The sliding window lock is common in crescent lock and strip lock hook lock. The crescent lock is installed in the middle of the sliding window and is also opened and closed by turning the window handle. However, unlike the handle lock, it locks and unlocks by hooking the hook. The strip lock hook lock is generally installed on both sides of the sliding window to switch by toggling or pressing the switch block. We are the leading and professional sliding window handle exporter, plz feel free to contact us!


sliding window handle


Summary: in fact, sliding windows and casement windows have their own advantages. It is recommended to use casement windows on low floors and sliding windows on high floors.