Casement windows

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A window casement is a frame that fits easily inside the entire window. The belt locks into the window frame on a set of runners, allowing it to be moved up and down. The safety of the window casement is an important element in the overall performance and durability of your windows. If your casement is not working properly, it will lead to a lot of problems such as drafts and leaks.


Today everyone can install double-glazed windows with three opening options in their home. Of course, it all depends on the needs of the client and his taste. There are four types of plastic window sashes: blind, swing, tilt and swing-out. Before purchasing double-glazed windows, you need to decide how the doors will open and how much you need. The window casements allows:

  • save on components —  for the manufacture of the second active sash, you will need another set of fittings and a profile for the second frame, which will entail additional costs; 
  • to reduce the size of the opening element —  even for a window with medium dimensions, the sash of a plastic window in the entire area of ​​the opening is too large and causes inconvenience during operation; 
  • to reduce the weight of the active part of the structure —  the sash over the entire opening area is too heavy and creates an excessive load on the fittings.

Even if after a while you decide to replace the non-opening casement of the window with an opening one — you can change the type of opening: make from a fixed sash — opening in an already installed window, as well as from a swing sash — make a swing-out etc. 

In fact, all options for finishing a cased window are considered unfinished, in the sense that during installation, in any case, unresolved issues remain that must be brought to perfection. Even modern plastic finishing materials need additional thermal insulation. They are one of the important details of the exterior decoration of the house, using various facing materials and building mixtures. 

What is the window casing?

Many people make a big mistake by leaving the outer slopes without window casing and thereby reducing the durability of the structure. Inside, the slopes are usually lined for aesthetic reasons, but this is not always done correctly. So, internal slopes are needed to:

  • protect the window from high humidity;
  • serve as protection against the effects of condensation, which is formed due to the temperature difference inside the room and outside the window;
  • perform a decorative role.

Do not forget about casement window air conditioners  which are still very popular today. A monoblock air conditioner is called a window air conditioner, which is installed in a window opening or a thin wall. Its design is rather primitive —  a rectangular body, inside which all the components are located. The principle of operation is also simple —  the window takes the air of the room, mixing in a little from the external environment. The stream circulates between the insides, cooled with a refrigerant, and is expelled into the room.