Whilst there are many different types of windows offering different functionalities, if you are looking for flexibility then it is almost certainly worth considering tilt and turn windows. The hinge mechanisms on these windows mean that they can be opened in two ways: inwards, like a casement window, or simply tilted from the bottom so that the top of the window opens inwards (at an angle).

The operation of the window is controlled by the function of the handle, when the handle is in the downwards position the window is securely closed, when it is moved to the ninety degree position the sash opens inwards (opening the aperture fully) and when it is turned one hundred and eighty degrees the sash will tilt (opening the aperture at the top only). 

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There a number of benefits to tilt and turn windows, particularly in smaller rooms, as they can be opened on the tilt function, providing ventilation without taking up a lot of space. The tilted opening also provides more security than a casement opening, creating only a small gap at the top of the window which would not be large enough for an intruder to climb in through or for a child to climb out of. 

However, they are also versatile enough to be swung open like a casement window and can even be used as a door. As these windows can open completely into the room, they are also easy to clean as they allow access to both sides of the unit without requiring the cleaner to lean out or climb up a ladder to the outside for this purpose.