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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. However, sash windows can become stuck and difficult to open or close. This is usually due to moisture that can cause the wood to swell.

Traditionally, window seal replacement near me boxes utilised chains, cotton cords or lead weights to operate. Modern sash windows have hidden springs to overcome this issue.

1. Aesthetics

Contrary to PVC-u windows which are manufactured to modular imperial sizes the timber sash windows are able to be restored to their original dimensions. This permits the re-installation of timber sash windows to meet current energy requirements and to comply with conservation area regulations. It also comes with windows that are superior to the uPVC alternatives.

Sliding frames for windows made of sash were originally only used in large buildings or public buildings. However, this changed when production became cheaper and artisans could make larger frames using greater glass. By the late 18th century Sash windows were the most popular wooden style in a majority of British homes. Because they were simple to open, sash windows let light into rooms without curtains.

The first windows were made of plain glass, but by the 17th Century the sash windows began to be more decorative. They started with coloured glazing bars, also known as mullions. They were expensive at first, but as glass production became cheaper and more efficient, they became a common feature in many historic homes.

In the 19th century, it was possible to produce large, strong glasses that didn't need supporting bars. This allowed for the frame to be made bigger and, in turn, gave the viewer a better view. This was a significant innovation.

Another important improvement was the introduction of the double-hung sliding window at the end of the I920s and beginning of the I930s. This allowed both the upper and lower sash to be opened at the same time and gave improved ventilation to buildings.

The most common type of sash is made from slow-growing deal (pine) but oak was used in the more expensive buildings as well as in earlier examples. It is important to maintain the parting bead which divides the sashes. This will help prevent rattles and draughts. The idler wheels, sash pulleys and sash rollers are essential to the functioning of the window.

2. Energy efficiency

As clearer and larger glass sheets became available, sash windows began to replace hinged casements. Plate glass was set into rebated timber frames, secured with glazing sprigs and putty was applied to the frame's sides for watertightness. This type of glazing gradually replaced the use of leaded lights.

The introduction of sashes resulted in an need for a greater variety of ironmongery, including the most basic fittings, brass pulleys as well as lead (and later cast iron) weights, sash stoppers shutter hinges, knobs and shutters, and a range of fasteners used to keep the sashes into place. These were often decorated with motifs, inscriptions or engraved patterns that identified the maker.

With regular maintenance, sash windows are extremely energy efficient. However, if they are not maintained, they can become drafty and let in cold air. Paint and putty can cause draughts too. You can fix this problem with wood-to-timber products.

The market for replacement windows is based heavily on the notion that old windows are beyond repair and are not able to be maintained economically. However they can be maintained with a little attention. However, these repairs can be expensive and involve considerable disruption to the home. To prevent this, many homeowners choose to replace their windows with PVC-u windows from one of the many "one-stop shop" installation companies. They can replace all windows in a house in one day, saving time and avoiding the need for various tradesmen to coordinate. These windows can be fitted with energy-saving double-glazing to attain higher energy ratings than the traditional windows made of sash. Double-glazed windows aren't capable of resembling the proportions or section of the sashes made of timber from the past.

3. Security

Traditional windows can be made secure without compromising their style. Ironmongery such as mortice bolts, sash chain and sash locks can be put in place. They can be fitted in a way that the window is able to be opened to allow ventilation or for cleaning. These windows are typically discrete since they are made to be used in conjunction with sash windows. They can be utilized in conjunction with traditional sash-window catchers and must be replaced by more robust versions (such as those incorporating double screws) or sprung levers to reduce the possibility of them being hammered out.

Sash-window frames were traditionally constructed from slow-growing deal or, in the more luxurious homes they were made from oak. If glazing bars have survived, they should be kept and, if it is possible, the timber of the cill should be replaced by identical wood. Many PVC-U firms offer a one-stop installation service. They can take down and replace windows throughout a home in a single day, without involving other tradespeople.

4. Ventilation

Sash windows were first 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 the rooms. Larger glass panes were also created. The result was a more light appearance and windows with more elegance.

The introduction of sash windows also required an entirely new range of ironmongery. Early pulleys were constructed of wood. Later Victorian ones were made of brass or a combination of leaded and wood. There were also different kinds of knobs and shutter hinges. These ironmongery pieces must be cleaned and preserved to appreciate their exquisite design.

To ensure they remain in good condition, wooden windows Cambridge (https://morphomics.science/wiki/the_advanced_guide_to_sash_windows_cambridge) windows require regular maintenance. A lack of regular attention can lead to:

Sashes that do not move easily.

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

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

In the I920s and the I930s steel casement windows grew in popularity due to their strength, slim and cheap, and complemented the vogue for healthy living. However, research has shown that traditional softwood sash windows can be just as thermally efficient as PVC-u double-glazed windows, and can be more attractive than the sleek lines of contemporary casement windows.

The window replacement industry has made a significant effort to persuade house owners that their windows are dirty, noisy and beyond repair. However, many older windows made of wood are in good condition and with minor repairs can easily be maintained for years to come.

5. Maintenance

The traditional sash windows require regular maintenance and inspection. If you don't 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 to degrade. The removal of sashes could also result in structural movements within the frame, causing the sash not to close properly. It is also possible for the sash be stuck or fixed in the open position and this can let water and draughts enter the structure.

Moisture penetration is a common cause of damage to windows made of timber. This can be avoided by thorough painting, periodic repairs, and removing the source of dampness. The paint can be removed to expose the soft, rotting wood. The sections that are rotting must be removed with care and the affected part should be snared together or pieced together by using replacements of the same type as the remaining timber. This method of repair maximizes the amount of original fabric retained and is among the least invasive methods of treating decay of timber to timber.

A wood condenser made of resin is an alternative to traditional staining or sanding. It is brushed on the surface of the timber to stabilise and protect it from further damage. It is especially useful for the treatment of pulley cords and sash which can help prevent breakage.

It is essential to preserve and not replace any historic ironmongery, like stay latches and sash latches. It is 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 possible since they can cause corrosion and deterioration to timber frames and sashes.