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For those of you who don’t know about it, a sash window is a kind of window comprised of movable sashes or panels. If the window is made up of several individual lights or pieces of glass held together by a frame, then it is a sash window. Quite often narrow muntins separate the panes.

A few kinds of sash windows exist. Sometimes the panels of glass slide up and down or side-to-side. Other sash windows have panels that open outward. The sliding sash windows sometimes are referred to as sliding sash, case, sash or Yorkshire light windows.

The typical American style sash window has a frame with a sash on top and one below. Each of these separate sashes can slide up or down within the window frame. This makes these sash windows easy to clean because the individual sashes can tilt in or come out altogether. There are many different configurations, models and shapes to choose from within this class of sash window.

The sash window has a long history, originating in England in the mid-17th century. The famous Ham House located on the River Thames just outside of London is an early architectural example of a building featuring sash windows. Robert Hooke is credited with creating the sash window, although there isn’t any conclusive evidence that proves this.

Victorian and Georgian style homes usually feature sash windows. These houses usually feature a classic six-panel sash window with two sashes, each featuring three panels above and below. This is often referred to as a six-over-six panel window. The standard size of sash windows is four feet wide; however, wooden sash can fit almost any size and there is no fixed rule.


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In order for sash windows to function, there is panel that is balanced through using a counter-weight made of heavy steel or another material hidden within the window frame.

Usually sash windows are made out of single glazed glass and soft wood, although sometimes double glazed glass is used.

A sash window is more likely to need some routine maintenance than a fixed window due to the fact that the panels slide each time the window is opened and closed. They require a lot of maintenance as well; however, the extra work involved is worth it since sash windows are very attractive.

Other than beautifying a home, sash windows offer some benefits that ordinary windows do not. They are more energy efficient, and they help to keep a home cool when the weather is warm outside. The reason for this is that sash windows open at the bottom and top. The room’s warm air is allowed to escape through the top opening, while cool air coming from outdoors is allowed in through the bottom opening.

A new kind of sash window was released recently into the marketplace. They are called uPVC sash windows, and they are attractive like regular sash windows are but are much more energy efficient and don’t require as much as maintenance and painting on a regular basis.

When you decide to give sash windows a try, be careful not to go with the first window installer you find. Make sure to get work samples and quotes from thee different companies at least before you make your final decision on which company you want to have install your new windows.

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