Sash windows have been around for centuries and have remained popular to this day because of their aesthetic appeal. They are made up of two wooden panels containing glass inserts. One or both of the panels or frames is able to move, usually vertically, to open or close the window. The weights for this action are hidden in what is known as a Yorkshire light and the earliest example can be seen in Vermeers painting of The Milk Maid, dated 1658.

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.

This was done to ensure that the window stayed in position even in very windy or stormy weather. The weights inside the frame were constructed of steel or lead and were balanced perfectly to ensure easy window operation. Two types of sash window are in use today. Double hung sash windows have two moveable panels.

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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 committed to installing them and are prepared to regularly maintain them, you are ensured of having beautiful functional windows that will last many years. Due to their design they are very effective at encouraging air circulation in a room. When both panels are opened equidistant from the frames, air flow is encouraged, drawing cool air in through the bottom of the frame and expelling hot air out of the top.

Sash windows are windows that are beautifully designed. If you’re wondering, you need to check into the sash window company. Sash window restoration London will help you with your window restoration wants.