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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge feature traditional sash window and the homeowners are proud of their appearance. Sash windows can become stuck and become difficult to open and close. This is usually due to moisture that can cause the wood to swell.

Traditionally, box sash windows utilised chains, cotton cords or weights made of lead to operate. Modern sash windows feature hidden springs to overcome this issue.

1. Aesthetics

Timber sash windows, in contrast to PVC-u windows that are made in imperial sizes and are modular, can be restored to their original dimensions. This allows the restoration to be in line with modern energy requirements while complying with conservation area regulations. It also gives windows with a superior appearance than the upvc doors repairs alternatives.

Sliding sash windows were originally only used in large buildings or public buildings, though this changed as production became less expensive and craftsmen could create larger frames using more glass. At the end of the 18th century, sash windows were the most popular wooden sliding doors cambridge design in British homes. Sash windows were simple to operate and let light into rooms without the use of curtains.

The early windows were made of plain glass However, by the 17th Century the sash windows began to become more ornamental. They were initially made of colored glazing bars or mullions. They were costly initially, but as glass production became less expensive and more efficient, they became a common feature in many historic homes.

In the 19th century it was possible to make large, sturdy glass that did not need support bars. This allowed the frame's size to be enlarged further and this in turn gave a better view out of the window. This was an important innovation.

The introduction of the double-hung sliding sash was a important improvement that was made at the end of the I920s and the beginning of the I930s. This allowed both the upper and lower sash to be opened simultaneously and allowed for better ventilation to buildings.

The most popular kind of sash is made from slow grown deal (pine) but oak was used in the more expensive buildings as well as in earlier examples. It is essential to keep the parting bead that is used to separate the sashes. This will help prevent rattles and draughts. It is also crucial that the idler and sash pulley wheels are kept in good shape as they assist in operating the window.

2. Energy efficiency

Sash windows replaced hinged casements as clearer and larger sheets were made available. Plate glass was set into rebated timber frames, secured with glazing sprigs and putty was then sprayed onto both sides of the frame for watertightness. This type of glazing gradually replaced the use of leaded lights.

The introduction of sashes resulted in the need for a greater variety of ironmongery, with the basic fittings being brass pulleys, lead (and later cast iron) weights, sash stops, shutter hinges and knobs as well as a range of fasteners that secured the sashes into the right place. These were often decorated with motifs, inscriptions or designs that were engraved to identify the maker.

Sash windows can be very energy efficient if they are maintained regularly. Without this maintenance, they can become draughty. Draughts can also result from the degeneration of paint and putty. This issue can be fixed by using wood-to-timber solutions.

The replacement window industry relies on the assumption that older windows are old and beyond repair, but they are able to be maintained with a little attention. However, these repairs can be costly and cause considerable disruption to the home. To prevent this homeowners often choose to replace their windows with PVC-u windows made by one of the many 'one stop shop' installation companies. They can replace all windows in a home in a single day, saving time and eliminating the need for different tradesmen to coordinate. They can also be fitted with 'energy saving' double-glazing to achieve greater energy efficiency than traditional windows with sash. However these double-glazed units are unable to replicate the section and proportions of the sashes made of timber from the past.

3. Security

It is possible to secure windows that are traditional without compromising their style. There are many types of ironmongery that can be fitted including sash chains mortice bolts and sash locks. These can be put in place in a way that the window is capable of being opened for ventilation or for cleaning. These windows are typically not noticeable since they are designed to be used in conjunction with sash windows. They can be used in conjunction with traditional sash plastic window repair catches. These are best replaced with more robust versions like ones that have double screws or sprung levers in order to reduce the possibility of being hit with hammers.

Sash-window frames were constructed from slow-growing deal or, in the more prestigious houses made of oak. If glazing bars have survived, they should be kept, and, if it is possible, the timber of the cill should be replaced by the same wood. Many PVC-U companies provide a one-stop shop installation service. They can take out and replace windows on a complete home in one day, without involving other tradespeople.

4. Ventilation

Sash windows were first introduced in the 17th century and allowed for a huge amount of light to enter buildings. By the end 18th century, they had been modified to allow more light could be let into rooms. Larger glass panes were also created. The result was a lighter appearance and windows that had a higher quality of design than before.

The introduction of sash windows also demanded a new range of ironmongery. Early pulleys could be made of wood. Later Victorian ones were made of brass or a mixture of leaded and wood. There were also various kinds of knobs and shutter hinges. These ironmongery elements should always be maintained and cleaned so that the quality of their design can be appreciated.

Timber windows require regular maintenance to keep them in good condition. Lack of attention to them regularly can result in:

Sashes that do not move easily.

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

break down of the putty and allow water penetration, which could cause decay in the frame and cill.

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

The replacement Window Caulking industry has made a significant effort to convince homeowners that their windows are old, dirty, and beyond economic repair. Many old windows made of timber can be fixed and utilized for a longer period with minor repairs.

5. Maintenance

The traditional sash windows require regular maintenance and inspection. If you fail to maintain your window's sash, it could lead to the sash cords breaking, and the glazing bars deteriorating excessively. It can also cause paint and putty become damaged. The removal of the sashes could also result in structural movement within the frame that causes the sash to move out of alignment and unable to close correctly. The sash could also get stuck in an open position, allowing water and draughts to enter the property.

Damage to windows cambridge made of timber is often caused by water entry. This can be prevented with thorough painting, periodic repairs and elimination of the cause of dampness. Wet rot can be identified by the wavy appearance of the paint that can be stripped away to reveal soft, rotting wood. The rotten timber sections should be carefully removed and the affected part should be scarfed or glued together by using replacements of the same type as the remaining timber. This method of repair maximises the amount of fabric retained and is among the least invasive methods for treating decay of timber to timber.

The use of a resin-based wood consolidant is another alternative to the traditional method of sanding and staining. It is brushed on the surface of the wood to help stabilize it and protect it from further damage. It is especially useful for treating sash and pulley cords, which can stop breakage.

It is crucial to restore and not replace any historic ironmongery, like the sash latches and stays. It can be difficult to replace these items without compromising their original design. It is also recommended that modern aluminium fittings, such as sashlifts and chainstays, are avoided since they can cause deterioration and corrosion of timber frames and sashes.