How to Restore Timber Sash Windows in Cambridge

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

Traditionally, window lock repairs boxes utilised chains, cotton cords or lead weights to operate. Modern sash windows feature hidden springs to solve this issue.

1. Aesthetics

In contrast to PVC-u windows, which are made according to the modular imperial size, timber sash windows can be restored to their original sizes. This lets the restoration meet the current energy standards while ensuring compliance with conservation areas regulations. It also comes with an option that is superior to the upvc Window and Door Repairs options.

Sliding frames for windows made of sash were originally only used for large buildings or public buildings. However, this changed when production became cheaper and artisans could produce larger frames with larger glass. In the late 18th century Sash windows were the most popular wooden style in a majority of British homes. As they were easy to open sash windows allowed light into rooms without the need for curtains.

Early windows were simple glass, but by the 17th century sash windows started to become more decorative with coloured glazing bars and moulded mullions. They were expensive at the beginning but as glass production became less expensive and more efficient, they were commonplace in many historic homes.

In the 19th century, it was possible to create large, sturdy glass that did not require support bars. This allowed the frame to be enlarged and, in turn, gave a better view. This was a significant advancement.

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

The most commonly used kind of sash is made of slow-growing deal (pine) but oak was used in the more luxurious buildings and in some earlier examples. A split bead divides the two sashes. It is important that this is maintained in order to avoid rattles and drafts. The sash pulleys, idler wheels and sash rollers are vital to the functioning of the window.

2. Energy efficiency

As clearer and larger glass sheets became available, sash window began to replace hinged casements. They were glazed with plate glass placed within timber frames with rebates and secured with glazing sprigs, and then putty on both sides to make them watertight. This form of glazing gradually superseded leaded lights.

Sashes were introduced, which resulted in increased demand for ironmongery. The most common fittings included brass pulleys (and later cast-iron) weights and stoppers for sashes shutter hinges and handles as well as various fasteners used to fix the sashes. These were often decorated in patterns, inscriptions and engraved patterns to identify the maker.

With regular maintenance, sash windows are very energy efficient. If they are not maintained they could become drafty. Draughts can also result from the degeneration of paint and putty. It is possible to fix this issue by using wood-to-timber solutions.

The industry of replacement windows relies heavily on the belief that older windows are beyond repair and are not able to be maintained economically. However windows can be easily maintained with a bit of attention. However, repairs to these windows are costly and can cause substantial disruption to the home. To prevent this homeowners often choose to replace their windows with PVC-u windows from one the many 'one stop shop' installation companies. They can take down and replace all the windows in a home in just one day, eliminating the need to coordinate different tradesmen and making the entire process much more efficient. These windows can be equipped with energy-saving double-glazing to attain higher energy ratings than the traditional windows made of sash. However, these double-glazed units cannot replicate the section and proportions of traditional timber sashes.

3. Security

Traditional windows can be secured 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 installed in a way that the window remains capable of being opened to allow ventilation or cleaning. They are usually discrete since they are made to complement sash windows. They can be used in conjunction with traditional sash window catch. They should be replaced with more robust versions like those that incorporate double glazing repairs cambridge screws, or sprung levers to decrease the possibility of being struck by hammers.

Sash-window frames are typically made from oak or slow-grown deal. If the glazing bars are still in good condition and are not damaged, they should be left. Where it is possible, the cills of the timber should be replaced by wood that is in line with. Many PVC-u firms provide a one-stop shop installation service. They can remove and replace windows on a complete home in a single day, without involving any other tradespeople.

4. Ventilation

Sash windows were first introduced in the 17th century and allowed for a large amount of light to be absorbed into buildings. At the end of the 18th century, they were modified so that more light could be let into the rooms. Larger glass panes were also produced. The result was a much lighter appearance and windows that had a higher quality of design than before.

The introduction of sash windows also necessitated the creation of a new line of ironmongery. Early pulleys were made from wood, later Victorian ones were made of brass or a combination of lead and wood and there were many kinds of shutter hinges and knobs. These ironmongery pieces must be maintained and cleaned to appreciate their beautiful design.

Timber windows require regular maintenance to keep them in good condition. Lack of regular attention may cause:

Sashes that do not move easily.

holes in the frame allow water that can cause decay and damage.

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

Steel casement windows gained popularity in the I920s & I930s because they were strong and slim, cost-effective and matched the trend of healthy living. However, research has shown that traditional softwood sash windows can be just as efficient thermally as PVC-u double-glazed windows, and are more attractive than the sleek lines of contemporary casement windows.

The industry of replacement windows has done a lot to persuade house owners that their windows are rotten, draughty and beyond economic repair. However, many old timber windows are in good shape and with minor repairs could easily be repaired for many years to be.

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 cause structural movement in the frame, causing the sash not to close properly. The sash may also become stuck in its open position, which allows water and draughts into the building.

Moisture penetration is the most common cause of damage to timber windows. This can be prevented by careful painting, regular repairs and the elimination of the cause of dampness. Wet rot is recognisable by the wavy appearance of the existing paint which can be removed to reveal soft, rotting timber. The sections of timber that are rotten must be removed with care and the affected part should be snared together or pieced together using replacements of the same type as the remaining timber. This method of repair maximises the amount of original fabric left, and is among the least invasive ways of treating decay caused by timber.

The use of a wood consolidant made from resin is an alternative to the traditional method of sanding and staining. It is brushed on the surface of the wood to stabilize it and protect it from further damage. It is especially beneficial for treating pulley cords and sash where it can prevent breakage.

It is crucial that any ironmongery from the past such as sash stay and latches be kept and restored instead of replacing them. These items can be very difficult to replace without harming the quality of the original design. It is also advised that modern aluminium fittings like sashlifts, as well as chainstays, are avoided since they can cause deterioration and corrosion of timber frames and sashes.