What is a Sash Window?

If you have sash window questions, we have answers. Beginning with a basic definition of sash windows, it is a window with movable panels. These can slide horizontally, but more often, vertically. 

The next question is, what is a sash in a window? It is one of the panels of a sash window. Sashes are offset so that one can slide over the other. This type of window is especially useful in settings where there is no room for a window to be swung open. 

Types of Sash Windows

What is a Box Sash Window?

This type of sash window is operated using a sash cord that operates a system of pulleys and wheels to make opening the sash easier. To hide the inner workings, they are housed in a “box” in the side of the window - the reason why they earned the name “box sash.” We see them on many 18th and 19th-century buildings.  

What is a Sliding Sash Window?

A sliding sash window can be a box sash window or a lighter-weight window that slides up without the use of a pulley. Some modern sliding sash windows use more compact spring-loaded balances instead of the traditional mechanism. Most sliding sash windows slide open vertically, but a sash window with a sash that slides sideways could also be called a sliding sash window. 

What Are Double-Hung Sash Windows?

Double-hung sash windows consist of two panels that can both be slid open. This allows you to open the upper sash or the lower sash at will. For example, if you want a little cooling and ventilation but do not want to feel a draught, you can open the upper sash. 

What Are Single-Hung Sash Windows?

You may have guessed that this type of sash window only has one movable sash. The lower sash can move, but the upper one is fixed in place, so the window can only be opened by sliding the lower sash upwards. 

What is a Yorkshire Sash Window?

Also known as horizontal sash windows, Yorkshire sash windows open and close by moving from side to side rather than up and down. As the name suggests, this style of sash window is quite common in Yorkshire. 

What is a Dummy Sash Window?

A dummy sash window looks just like a regular sash window but does not open. Dummy sash windows are often used as the side panes of bay windows or are paired with regular sash windows so that they have both opening and non-opening sashes that look alike. Sometimes, people use dummy sash windows to replace working sash windows that they no longer need to open. 

What is a Flush Sash Window?

Flush sash windows look like regular sash windows, but the panels are flush with one another, creating a smooth appearance. Because the panels are flush, the window itself opens like a casement window, swinging outward. People choose them for a classic sash window look, though it would be more accurate to call them flush casement windows. 

Sash Window Parts

Now that we have covered different types of sash windows, we can work our way down to the components of a sash window.

‍Parting beads are the strips between sashes that allow them to slide past each other smoothly. 

‍Staff beads keep the sashes in place from the inside. 

‍Sash rails are the horizontal members of the sash window frame. There is one at the top, another at the bottom, and the mid-rail is found where the upper and lower sashes meet. 

‍Glazing bars frame the sash window’s panes of glass. Traditionally, sash windows were made up of several panes. For example, you could have a six-over-six sash window or a nine-over-nine window, with the numbers referring to the number of panes a sash window has. 

‍Sash horns are protrusions on the upper sash. They provide some structural support and prevent sashes from being opened too far. 

Benefits of Sash Windows

If you just like the look of sash windows, you are by no means the only one. However, they have some practical benefits, too. Since they do not need to swing open, they work well in tight spaces or where passing people may collide with open casements. 

Of course, they also provide good ventilation. Double-hung sash windows are the best for ventilation. If one opens both sashes, cool air can come in through the lower sash while hot air vents through the higher one. 

Replacing a Sash Window

Replacing a sash window is a big job. The frames are often rotten and must be replaced along with the sashes. To minimise disruption and ensure a neat job, we recommend using professional installers. 

While you are replacing your sash windows, consider future maintenance needs. Choosing a well-engineered sash window, such as the ones made by Stronghold Security Doors, allows you to choose the look you want. We use engineered wood finishes that do not require regular refinishing and that won’t swell or crack when exposed to the elements. 

Another benefit of our sash windows is that we can make them to fit any size of window opening - a factor that is often a problem when renovating historic buildings. Most important of all, our sash windows are secure. It will be no easy task to break our security glass panes, and the frames are made so that the windows cannot be forced open, even when using tools. 

If you’re wondering about replacing your sash windows, call Stronghold Security Doors. We not only make your window frames to order but also install them quickly and professionally. Give your home a new look and enjoy peace of mind with our help. 

‍