Ups And Downs Of Long 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.
While having only one moving sash is not uncommon, windows where both panels can operate is much more popular. Most will open with an up and down movement, although horizontally operating openings are also available. The glass panes held within the sashes were traditionally of the single-paned variety but now double and even triple-paned glass can be fitted. Additional layers of glass usually equate to increased energy 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.
Configurations designed for movement of both sashes within the frame are commonly known as ‘double-hung’ windows. While traditionally constructed of wood, they are now available in other materials including tough, durable PVC (poly vinyl chloride) plastic. These plastic windows are generally less expensive to buy than the wood models and are used widely for new construction and for 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 assist you with affordable sash window restoration London? Get the inside scoop with our complete sash window company overview.
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