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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have sash windows that are traditional and the homeowners are proud of their appearance. Sash windows can become stuck and become difficult to open or close. This is often due to moisture that can cause the timber to swell.

Traditionally, windows made of box sash utilized chains or cotton cords and weights made of lead to operate. Modern sash windows feature hidden springs to address this problem.

1. Aesthetics

Timber sash windows, unlike PVC-u windows, which are made in imperial sizes, which are modular, are able to be restored to their original size. This permits the re-installation of timber sash windows to comply with current energy standards and conform to conservation regulations for areas. It also provides windows with a more attractive appearance than uPVC alternatives.

Sliding sash windows were initially only found in large buildings or public buildings, however the production process was less expensive and craftsmen were able to create larger frames using more glass. By the late 18th century Sash windows were the most popular wooden windows and doors cambridge design in most British homes. Sash windows were simple to operate and allowed light to enter rooms without the use of curtains.

Early windows were simple glass, but in the 17th century sash windows were becoming more decorative, with coloured glazing bars and moulded mullions. They were expensive at the time, but as glass production improved and less expensive, they became a part of numerous period houses.

In the 19th century, it became possible to make large, sturdy glasses that did not require supporting bars. This allowed the frame size to be increased even further, which meant more of a view from the window. This was an important innovation.

Another significant improvement was the introduction of the double-hung sliding window at the end of I920s and at the beginning of I930s. The double-hung sliding sash was another important improvement that was made at the end of the I920s, and at the beginning of the I930s.

Oak was used for older examples and more prestigious buildings. A parting bead is used to separate the two sashes, and it is essential that it is maintained in order to avoid rattles and draughts. The sash pulleys, idler wheels and sash rollers also are essential for the proper operation of the window.

2. Energy efficiency

As clearer and larger sheets of glass were made available, sash windows began replacing hinged casements. They were glazed with plate glass placed within timber frames with rebates and pinned in place using glazing sprigs, and then putty on both sides to make them watertight. This kind of glazing gradually replaced the leaded light bulbs.

Sashes were introduced, which resulted in an increase in demand for ironmongery. The basic fittings included brass pulleys (and later cast-iron) weights, sash stoppers shutter hinges, handles and shutter hinges, and various fasteners used to secure the sashes. These were usually decorated with designs, inscriptions, and patterns engraved to identify the maker.

Sash windows are energy-efficient with regular maintenance. Without this maintenance they can get draughty. Draughts can also be caused by the deterioration of putty and paint. It is possible to fix this issue by using wood-to-timber solutions.

The replacement window industry relies heavily on the perception that old windows are damaged beyond repair and cannot be maintained economically. However, they can easily be maintained with a bit of attention. However, repairs to these windows are costly and can cause considerable disruption to the home. To prevent this, many homeowners opt for a complete replacement with PVC-u windows from one the large "one-stop shop" installation companies. They can take down and replace all the windows in an entire house within a single day, eliminating the need to co-ordinate different tradesmen and making the whole process much more efficient. They can also be supplied with 'energy saving' double-glazing to get greater energy efficiency than traditional windows made of sash. However double-glazed windows cannot reproduce the proportions and section of traditional timber sashes.

3. Security

It is possible to secure traditional windows without compromising their style. Many types of ironmongery can be fitted including sash chains mortice bolts, and sash locks. These can be installed in such a way that the window can still be opened for ventilation and cleaning. These products are usually unobtrusive, as they are designed to fit the sash window. They can be used in conjunction with traditional sash window catches. They are best replaced with more robust models, such as those that incorporate double screws or sprung levers to decrease the chance of being struck by hammers.

Sash-window frames are traditionally constructed from oak or slow-grown deal. Where glazing bars have survived they should be kept, and where it is possible, the timber of the cill should be replaced with the same wood. Many PVC-U companies offer a one-stop installation service. They can remove and replace windows on a complete home in one day, without the need to involve other tradespeople.

4. Ventilation

Sash windows were introduced in the 17th Century and allowed for a large amount of light to enter buildings. By the end of the 18th century, they were altered to allow more light into rooms and bigger glazing panes started to be manufactured. The result was a lighter appearance and windows with more elegance.

Sash windows were introduced, which required a new range ironmongery. Early pulleys could be made from wood. Later Victorian ones were made of brass or a mixture of wood and lead. There were also a variety of types of shutter hinges and knobs. The ironmongery pieces need to be cleaned and preserved to appreciate their beautiful design.

To keep them in good shape, timber windows need to be maintained. Inattention to maintenance can lead to:

Sashes that do not move easily.

Holes in the frame that allow water to get in and cause damage and decay.

The putty can be soaked by water and cause decay to the frame or cause cill.

Steel casement windows became popular in the I920s and I930s because they were strong and slim, and also because they were cheap and matched the trend of healthy living. Research has proven that softwood sash window are just as effective as PVC-u windows, and may even be more attractive.

The Window Mechnism repair replacement industry has done a great job convincing homeowners that their old windows were rotten drafty, noisy and beyond repair. The reality is that many older timber windows are in good shape and, with minor repairs, could easily be maintained for years to come.

5. Maintenance

A traditional sash window requires regular maintenance and inspection. If you do not maintain your sash window, it could cause the sash cords breaking, and the glazing bars wearing out excessively. It can also cause the paint and putty to become damaged. The removal of sashes could also result in structural shifts within the frame, which causes the sash to be misaligned and in a position that it is not able to close properly. It is also possible for the sash to be snagged or fixed in the open position and let water and draughts in the structure.

Moisture penetration is the most common cause of damage to windows made of timber. This can be avoided by careful painting, regular repairs, and removing the cause of dampness. The paint can be removed to expose the soft, rotting wood. Any rotten sections of timber must be removed and the affected part carefully wrapped or pieced back using replacements made of the same kind of timber as the ones remaining. This method of repair increases the amount of fabric that was originally used and is among the most non-invasive methods to treat timber-to-timber rot.

The use of a resin-based wood consolidant is a different option to traditional sanding and staining. It is brushed onto the surface of the wood to protect it and strengthen it. It is particularly useful in the treatment of pulleys and sash cords where it can help to stop breakage.

It is crucial that any historic ironmongery like sash window repair cambridge stays and latches are kept and restored rather than replaced. It can be difficult to replace these items without compromising their original design. It is also advised that modern aluminium fittings, such as sashlifts and chainstays, are avoided since they can cause deterioration and corrosion of timber frames and sashes.