How to Restore Timber Sash Windows in cambridge windows

Many homes in Cambridge have sash windows that are traditional and homeowners are proud of the way they look. However, sash windows can become stuck and difficult to open or close. This is often due moisture that can cause the timber to expand.

Box sash windows were traditionally operated using chains, cotton cords and weights made of lead. Modern window springs for sash windows are concealed to eliminate this issue.

1. Aesthetics

Unlike PVC-u windows that are made according to the modular imperial size, timber sash windows can be restored to their original size. This lets the restoration meet modern day energy requirements while complying with conservation area regulations. It also offers an option that is superior to the upvc door repair cost options.

Sliding frames for windows made of sash were originally only used for large buildings or public buildings. However, this changed when production became more affordable and artisans could make larger frames using more glass. At the end of the 18th century, sash windows had become the most popular wooden design in British homes. Sash windows were simple to operate and allowed light to enter rooms without the use of curtains.

The first windows were made of clear glass However, in the 17th century the sash windows began to become more ornamental. They began with colored glazing bars or mullions. These windows were quite expensive at the time but as glass production improved and cheaper they became a feature of many of the period homes.

In the 19th century, it became possible to produce large, sturdy glasses that did not require support bars. This allowed for the frame to be enlarged and, in turn, gave an improved view. This was an important innovation.

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

The most popular type of sash is made from slow-growing deal (pine) however oak was used in the more expensive buildings as well as in some earlier examples. It is important to maintain the parting bead which is used to separate the sashes. This will stop rattles and draughts. It is also important that sash pulleys and idler wheels are kept in good shape as they assist in operating the window.

2. Energy efficiency

As larger and clearer sheets of glass were made available, sash windows began replacing hinged casements. Plate glass was set into frames of timber that were rebated, then secured with glazing sprigs and putty was then sprayed onto the frame’s two sides for watertightness. This type of glass gradually replaced the use of leaded lights.

The introduction of sashes resulted in the need for a wider range of ironmongery, with the most 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 in the right place. They were often decorated with designs, inscriptions, and engravings to identify the maker.

Sash windows can be extremely energy efficient when they are maintained regularly. Without this maintenance, they can become drafty. Paint and putty may cause draughts. This issue can be fixed with wood-to-timber products.

The replacement window industry relies on the perception that old windows are damaged and beyond economical repair, but they can be maintained with a little attention. However, repairs to these windows can be expensive and involve considerable disruption to the home. To avoid this homeowners, many prefer to replace their windows with PVC-u windows from one the many “one-stop shop” installation companies. They can replace all windows in a home in a single day, saving time and avoiding the need for various tradesmen to coordinate. They can also be fitted with ‘energy-saving’ double-glazing, which can achieve more energy efficient ratings than those offered by traditional sash windows. However these double-glazed units are unable to replicate the section and proportions of historic timber sashes.

3. Security

It is possible to secure windows that are traditional without compromising their appearance. Ironmongery like mortice bolts, sash chain and sash locks can be put in place. They can be positioned in a manner that the window is able to be opened to allow ventilation and cleaning. They are generally minimal in appearance, as they are designed to match the sash window and door repair near me. They can be used with traditional sash window catches. These should be replaced with more robust versions, such as those with double screws, or sprung levers in order to reduce the possibility of being hammered.

Sash-Window Hinges leeds frames were traditionally constructed from slow-growing deal or, in more prestigious houses made of oak. If the glazing bars are intact and in good condition, they should be kept. If feasible, the cills made of timber should be replaced by wood that matches. Many PVC-u firms offer a one-stop shop installation service. They can take out and replace windows on a complete house in just 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 be absorbed into buildings. By the end of the 18th century they were adapted to allow more light into rooms, and bigger glazing panes started to be made. The result was a lighter look and windows that were more elegant.

The introduction of sash windows also required an entirely new range of ironmongery. Early pulleys were constructed from wood. Later Victorian ones were made of brass or a mixture of wood and leaded. There were also different types of knobs and shutter hinges. The ironmongery pieces need to be maintained and cleaned to appreciate their beautiful design.

Timber windows require regular maintenance to ensure they remain in good shape. Inattention to maintenance can result in:

Sashes that do not slide smoothly.

holes in the frame that admit water causing damage and decay.

Water can penetrate the putty and cause decay to the frame or the cill.

Steel casement windows were popular in the I920s & I930s due to their strength and slim, cost-effective and matched the trend towards healthy living. Studies have shown that softwood sash window are as efficient as PVC-u windows and can even be more attractive.

The industry of replacement windows has done a lot to persuade house owners that their traditional windows are dirty, noisy and beyond economic repair. Many older timber windows can be repaired and used for a long time with minor repairs.

5. Maintenance

A traditional sash window requires regular maintenance and inspection. Inability to maintain it properly can lead to sash cords breaking, excessive wear on the glazing bars, and degradation of the paint and putty. The removal of the sashes could also result in structural shifts within the frame, which causes the sash to be misaligned and not closing properly. It is also possible for the sash be snagged or fixed in an open position and let water and draughts in the structure.

Moisture penetration is a common cause of damage to timber windows. This can be prevented with careful painting, regular repairs and the elimination of the cause of dampness. The paint can be removed to reveal the soft, rotting wood. Any rotten timber sections should be cut off and the affected area should be carefully scarfed or pieced in using replacements made from the same kind of timber as those remaining. This method of repair maximises the amount of fabric retained and is one of the least invasive methods for treating timber-to-timber decay.

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 sash cords and pulleys which help prevent breakage.

It is crucial to restore and not replace any historic ironmongery, like sash latches and stays. It can be difficult to replace these items without altering their original design. It is recommended that the use of modern aluminium fittings such as sash lifts and chain stays should be avoided if feasible as they could cause corrosion and deterioration to frames and sashes made from timber.