‘Hung’ sash windows are a very popular choice for use on most homes and have been for hundreds of years. The name comes from the fact that these windows contain panels (called ’sashes’)that hold the glass panes in place. At least one of these panels will be movable, allowing the window to be opened and closed.

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.

Movement of the sometimes heavy sash(es) is usually facilitated through the use of a pulley/counter-weight system. Weights hidden within the window frame act as a counter-balance making it possible to open and close the window without too much effort. If your windows are difficult (or impossible) to open this may be a simple problem with the counter-weight system and is easily remedied.

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.

Speaking of replacement, owners of older homes are often faced with the decision of replacing or repairing existing windows that have become inefficient or nonworking. If possible, repair is usually advisable to replacement. It’s cheaper, generally looks better and can be made to be nearly just as energy efficient.

If you reside in a conservation area (or your home is ‘listed’) your options may be limited by what’s allowed. Sash windows are a tried and tested design that continue to be the most popular and the older versions can be made to look good and operate properly with some well-directed maintenance measures. Study the options and benefits and then decide. Your home deserves to look and feel its best!

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