Real Estate

Mechanics Of Ever Popular Sash Windows

Sash windows (also known as ‘hung’ sash-windows) have been around for about 400 years and remain the most popular window configuration to date. The name is derived from the fact that these windows contain at least one moving ‘sash’ in their design. The sash is the name given to the part that holds the glass panes (also called ‘lights’) in place.

Some hung windows contain only one movable panal (sash) but most will have two. These panels most commonly open from top to bottom (vertically) but can also be made to operate in a sideways fashion (horizontally). The glass used in these units has traditionally been single-paned but recently double-pane and even triple-pane configurations have been available. When properly installed, extra panes give better insulation and efficiency.

The operation of this type of window is made possible by a pulley and counter-weight system. A weight hidden within the frame and attached by the means of pulleys and ropes (or chains) counter-balances the force of the moving sash to facilitate ease of movement. When older versions of this type of window become inoperable or difficult to open and close the problem can often be solved by refurbishing this counter-balancing system. After many decades of use they become worn may require some basic maintenance. It’s not too difficult to accomplish.

Sometimes the design will include the presence of hinges which allow the window to be locked open while also being detached from the counter-weights. This will facilitate ease of cleaning and can also enable quicker escape in times of emergency. Sometimes the use of spring balances is substituted for the more common pulley and chain (or cord) system.

If both sashes are capable of moving this is known as a double-hung window (as opposed to single-hung, if only one moves). Traditionally made from wood, these units are now commonly made from other materials (including vinyl, which has become quite popular). Vinyl (PVC) windows are usually cheaper to buy than wood and are currently a widely used option for both new construction and old window replacement.

When thinking about replacing older, worn-out windows (as many owners of older homes will) with new models, a few things should be known. Most older, difficult to operate windows can be made to work like new again with some proper maintenance. That may include scraping away old paint, replacing worn or broken ropes or pulleys and doing some modern weather stripping to improve energy efficiency. This is all pretty simple stuff!

If you live in an area where window replacement is restricted or your home happens to be ‘listed’ your options are limited. Plastic windows are no doubt taboo. Anyway, the original ones will always LOOK better, especially if you have them professionally reconditioned. They can actually be made to be BETTER than new!

Looking for a company that can help you with inexpensive sash window restoration London? Get the exclusive inside scoop with our complete sash window company overview.

categories: sash windows,wood windows,workshop,carpentry,construction,builders,diy,glazing,glass,windows,property,house,home

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