‘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.

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.

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.

In some designs, hinges are installed which can hold the movable sash in place while simultaneously disengaging it from the counter-balancing weight. This makes cleaning the unit easier and can also make an emergency escape through the window quicker and easier. Also, some designs forego the use of weights and pulleys, opting instead for a system of spring balances.

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.

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 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!

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