A sash window is a type of window with two window sashbars, or sashes, one positioned above the other, that typically opens by sliding vertically. This style of window has multiple panes and is seen in different structures, including residential houses.
Window Terminology
A sash window has many parts required to be fully functioning and secure. These parts include the frame, stiles and rails, sashbar, glazing bar, and panes. The frame is the outer part of the window and is used to hold a window together. The stiles and rails are, respectively, vertical and horizontal bars built into the frame that surround the sash. The sashbar holds the panes of the window in place. The glazing bars are built within the sash and divides the window panes. The panes are the glass pieces of the window, according to Homebuilding.
How Sash Windows Work
Sash windows are simple to use once constructed and installed. A latch where the two sashes meet will lock or unlock the window. After unlocking the window, the lower sashbar can be pushed up next to the upper sash to open the window. Pushing the lower sash back down to its original position will close the window, and the latch will lock it.
Benefits of a Sash Window
Sash windows can be beneficial compared to other types of windows. Because of the multiple framing within the window, if a sash window were to break, it may be possible to replace only the sash instead of the entire window. In cases where replacing only the sash is necessary, it is also possible for a ‘do-it-yourself’ repair, according to This Old House.
Other Windows with Sashes
Window sashbars are always seen in sash windows, but there are other window types built with sashes, including the casement window and sliding window. These, like the sash window, have one fixed sashbar and one sashbar that slides open, either vertically or horizontally. The share some parts and benefits of the sash window due to the use of the sashbar.
Related Resource: Window Capping
