Sash windows are beautifully decorative windows that are made from movable panels or frames that have glass insets and can be opened horizontally or vertically. The weights used for moving the panels are concealed in a box called a Yorkshire light and the first dateable reference of this type of window can be found in the 1658 painting of The Milkmaid, by the Dutch artist Vermeer.
The earliest examples of sash windows can be found in an old English home called Ham House, which dates back to the year 1670. A traditional sash window is made up of three panes set horizontally and two panes set vertically on two separate panels, creating a classic rectangular shaped window. Over the years other configurations have become acceptable as well.
In early Victorian and Georgian homes the standard size for a sash window measured four feet across. These windows opened vertically, with a runner inset into the wooden frame, which concealed a set of weights and springs to make the opening and closing of this window easier.
Metal weatherstripping was added to ensure that the window remained in its frame regardless of external weather conditions. The inserted weight was constructed of lead or steel and was perfectly balanced for easy raising and closing of any sliding sash frame. Two types of sash frames came into existence.
The single hung versions consist of one panel that is fixed into the frame and one frame that is able to open and close, usually the bottom one. This is a great design for encouraging ventilation in the room.
Traditionally the frames are manufactured from soft wood and the panels can be either single or double glazed. These types of frames are quite high maintenance, as they will need regular painting to prevent wood rot or warping of your wood. Over time, shrinkage can cause the panes to rattle in the wind and poorly applied paint can cause problems with the smooth opening of the window.
If you are willing to regularly maintain your windows they will remain beautiful and durable for years to come. They will not only add to the beauty of the exterior of your home but assist in cooling the interior due to their design. In the hot summer months if both panels are opened equidistant from the frames this allows for the hot air to escape from the room while cool air is drawn in through the bottom edge of the window.
Sash windows are windows that are beautifully designed. If you’re wondering, you should check into the sash window company. Sash window restoration London will help you with your window restoration needs.