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How to Restore Timber Sash Windows in Cambridge

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

Box sash windows were traditionally operated using chains or cotton cords as well as lead weights. Modern windows with sash springs are concealed to solve this problem.

1. Aesthetics

Timber sash windows, in contrast to PVC-u windows that are made in imperial sizes that are modular, can be restored to their original size. This allows for the restoration of timber sash windows to comply with current energy standards and comply with conservation area regulations. It also offers windows that have a more attractive appearance than uPVC alternatives.

Sliding sash window frames were initially intended for large structures or public buildings. However the production became less expensive and craftsmen could make larger frames using larger glass. By the late 18th century sash windows were the dominant wooden design in most British properties. Since they were easy to open sash windows allowed light into rooms without curtains.

The first windows were made of plain glass, but in the 17th century, sash windows began to become more attractive. They were initially made of colored glazing bars, also known as mullions. They were costly at the beginning but as glass production became cheaper and more efficient, they became commonplace in many homes of the period.

By the 19th century it was possible to make large, strong glass that did not require support bars. This allowed the frame's size to be enlarged 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 windows at the end of I920s and at the beginning of I930s. This allowed both the upper and lower sash to be opened simultaneously, and gave improved ventilation to a building.

The most commonly used type of sash is constructed of slow-growing deal (pine) but oak was used in the more luxurious buildings and in some earlier examples. It is crucial to maintain the parting bead that divides the sashes. This will prevent draughts and rattles. The idler wheels, sash pulleys and sash rollers are also essential for the proper operation of the window.

2. Energy efficiency

Sash windows replaced hinged cases as larger and clearer sheets were made available. Plate glass was placed in rebated timber frames, which were pinned with glazing sprigs, and putty was then sprayed onto the frame's two sides for watertightness. This form of glazing gradually replaced leaded lights.

Sashes were introduced, which led to a greater demand for ironmongery. The most basic fittings were brass pulleys (and later cast-iron) weights and stoppers for sashes shutter hinges, handles and shutter hinges and a variety of fasteners used to secure the sashes. They were often decorated with designs, inscriptions, and patterns engraved to identify the maker.

With regular maintenance, sash windows can be extremely energy efficient. However, without this maintenance they may become drafty and let in cold air. Draughts can also result from the degeneration of paint and putty. This issue can be fixed by using wood-to-timber products.

The replacement window maintenance industry relies heavily on the belief that old windows are damaged beyond repair and therefore cannot be maintained economically. However, they can easily be maintained with a little attention. Repairs can be costly and cause many disruptions in the home. To avoid this homeowners, many choose to replace their windows with PVC-u windows from one the largest "one stop shop" installation companies. They can replace all windows in a house in one day, thereby saving time and eliminating the need for different tradesmen to coordinate. These windows can be fitted with energy-saving double glazing to get higher energy ratings than the traditional windows with sash. However, these double-glazed units cannot replicate the section and proportions of historic timber sashes.

3. Security

Traditional windows can be secured without compromising their appearance. There are many types of ironmongery that can be installed, including sash chains, mortice bolts and sash locks. These can be installed to ensure that the window Repair specialists remains capable of being opened for ventilation or cleaning. These products are often not noticeable since they are designed to work with sash windows. They can be used alongside traditional sash-window lock repairs catches that must be replaced by more robust models (such ones that have double screws) or spring levers to decrease the possibility of them being opened by hammering.

Sash-window repair frames were constructed from slow grown deal or, in more elegant homes they were made from oak. If the glazing bars are still intact and are not damaged, they should be left. Where feasible, the cills made of timber should be replaced with wood that is in line with. Many PVC-U companies offer a one-stop shop installation service. They can take out and replace windows on an entire home in a single day, without the need to involve other tradespeople.

4. Ventilation

Sash windows were introduced in the 17th Century and allowed for a significant amount of light to enter buildings. In the 18th century, they had been adapted so that even more light could be let into rooms. Larger glass panes were also made. The result was a more light appearance and windows that were more elegant.

Sash windows were introduced and required a new range ironmongery. The first pulleys were made of wood, while later Victorian ones could be made of brass or a combination of lead and wood and there were various types of shutter hinges and knobs. Ironmongery elements must be kept and cleaned so that the quality of their design can be appreciated.

To ensure they remain in good condition, wooden windows require regular maintenance. Inattention to maintenance routinely could lead to:

Sashes that don't slide smoothly.

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

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

Steel casement windows gained popularity in the I920s & I930s because they were sturdy and slim, cost-effective and complemented the trend for healthy living. Research has proven that softwood sash windows are just as effective as PVC-u windows and can even be more attractive.

The industry of replacement windows has done a lot to convince homeowners that their windows are dirty, noisy and beyond economic repair. Many old windows made of timber can be repaired and utilized for a longer period with minor repairs.

5. Maintenance

A traditional sash window requires regular maintenance and inspection. Inability to keep up with this can lead to broken sash cords, excessive wear on the glazing bars, and degradation of the paint and putty. The removal of sashes can also cause structural movement in the frame, which can cause the sash to not close correctly. The sash could also get stuck in an open position, which allows water and draughts into the property.

Moisture penetration is a frequent cause of damage to timber windows. This can be prevented with thorough painting, periodic repairs, and removing the source of dampness. The paint can be removed to reveal the soft, rotting wood. The rotten timber sections must be removed with care and the affected part should be scarfed together or pieced together by using replacements of the same kind as the timber that remains. This method of repair maximizes the amount of fabric used in the first place and is one of least invasive ways to treat wood-to-timber rot.

A wood condenser that is based on resin is an alternative to the traditional staining or sanding. The product is brushed on the surface of the wood to protect it and strengthen it. It is particularly beneficial in the treatment of pulleys and sash cords where it can help to prevent the breakage.

It is crucial that any historic ironmongery such as sash stay and latches are kept and restored instead of replaced. They can be extremely difficult to replace without harming the the original design. It is also recommended that fittings made of aluminum, such as sashlifts and chainstays, should be avoided since they can cause corrosion and deterioration of timber frames and sashes.