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How to Restore Timber Sash Windows in Cambridge

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

Box sash windows cambridge - look at these guys - were previously operated with chains or cotton cords, as well as lead weights. Modern sash windows feature hidden springs to overcome this problem.

1. Aesthetics

Timber sash windows, unlike PVC-u windows that are made in imperial sizes and are modular, can be restored to original dimensions. This allows the restoration to meet modern day energy requirements while ensuring compliance with conservation areas regulations. It also offers windows that have a superior appearance than 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 more affordable and artisans could create larger frames using larger glass. By the end of the 18th century, sash windows had become the most popular wooden style in British homes. Sash windows were simple to operate and let light in rooms without the need for curtains.

The first windows were made of plain glass, but in the 17th century the sash windows began to be more decorative. They started with coloured glazing bars, also known as mullions. They were costly at the beginning but as glass repair cambridge production became less expensive and more efficient, they became an integral feature in many homes of the period.

In the 19th century, it became possible to create large, sturdy glasses that didn't require supporting bars. This allowed the frame's size to be enlarged more, which in turn meant more of a view from the window. This was an important innovation.

Another important improvement was the introduction of the double-hung sliding window at the end of the I920s and beginning of I930s. This allowed both the lower and upper sash to be opened simultaneously and allowed for better ventilation to the building.

Oak was used in older and more luxurious buildings. It is important to maintain the parting bead which is used to separate the sashes. This will stop rattles and draughts. It is also crucial that the idler and sash pulley wheels are in good condition as these assist in operating the window.

2. Energy efficiency

Sash windows were replaced by hinged casements as clearer and larger sheets were made available. They were glazed with plate glass placed within timber frames with rebates and pinned in place using glazing sprigs, with putty on both sides to make them watertight. This type of glazing gradually replaced leaded lights.

The introduction of sashes created an need for a larger variety of ironmongery with the most basic fittings being brass pulleys, lead (and later cast iron) weights, sash stoppers, shutter hinges and knobs, and a range of fasteners that secured the sashes to their place. They were often decorated with designs, inscriptions, and patterns engraved to identify the maker.

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

The industry of replacement windows is based on the perception that old windows are damaged and beyond economical repair, whereas they are able to be maintained with a bit of care. However, these repairs are costly and can cause significant disruption to your home. To prevent this, many homeowners prefer to replace their windows with PVC-u windows made by one of the large "one stop shop" installation companies. They can replace and remove all windows in an entire house in just one day, eliminating the need to coordinate multiple tradesmen and making the entire process much quicker. These windows can be equipped with energy-saving double-glazing to attain higher energy ratings than traditional windows with sash. However double-glazed windows cannot reproduce the proportions and section of historic timber sashes.

3. Security

It is possible to secure traditional windows without compromising their appearance. Ironmongery, such as mortice bolts, sash chain and sash locks can be installed. They can be positioned in a manner that the window is able to be opened for ventilation and cleaning. These products are usually unobtrusive, as they are designed to complement the sash window. They can be used in conjunction with traditional sash-window catches that should be replaced with more robust models (such ones with double screws) or spring levers to decrease the possibility of them being hammered out.

Sash-window frames were traditionally made from slow-growing deal or, in more prestigious houses, from oak. Where glazing bars have survived they should be kept, and where it is possible, the timber of the cill should be replaced by identical wood. PVC-U companies usually offer a one stop shop installation service that can remove and replacing windows on an entire home in a single day without the need to involve other tradespeople or coordinate visits from a number of different suppliers.

4. Ventilation

Sash windows were introduced in the 17th century and allowed for a large amount of light into buildings. At the end of the 18th century, they were altered to allow more light into rooms and bigger glazing panes started to be produced. The result was a lighter appearance and windows that had a higher degree of elegance than before.

The introduction of sash windows also required an entirely new range of ironmongery. The first pulleys were made of wood, while later Victorian ones were made from brass or a combination of lead and wood and there were many kinds of shutter hinges and knobs. These ironmongery pieces should be maintained and cleaned to appreciate their exquisite design.

To ensure they remain in good condition, timber windows must be maintained. Inattention to maintenance can result in:

Sashes that no longer slide easily.

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

break down of the putty and allow water to penetrate, which could lead to decay of the frame and cill.

In the I920s and I930s steel casement windows gained popularity because they were strong, slim and cheap and also matched the fashion for healthy living. Research has proven that softwood sash windows are just as efficient as PVC-u windows, and may even be more attractive.

The window replacement industry has made a significant effort to persuade house owners that their traditional windows are dirty, noisy and beyond repair. Many older timber windows can be repaired and used for many more years with minor repairs.

5. Maintenance

A traditional sash window requires regular maintenance and inspection. Failure to do this could result in broken sash cords, excessive wear on the glazing bars, and deterioration of paint and putty. The removal of sashes may also cause structural movement within the frame that causes the sash to become misaligned and in a position that it is not able to close properly. It is also possible for the sash to be stuck or slammed into an open position, which can let water and draughts enter the property.

The damage to timber windows is usually caused by moisture infiltration. This can be prevented with thorough painting, periodic repairs and the elimination of the source of dampness. The paint can be removed to expose the soft, decaying wood. Any timber that is rotting must be removed and the affected area should be carefully wrapped or pieced back using replacements made of the same type of timber as the ones remaining. This method of repair maximizes the amount of fabric left, and is among the least invasive methods for treating decay of timber to timber.

A wood condenser that is based on resin is an alternative to the traditional process of sanding or staining. This is brushed onto the surface of the wood to help stabilize it and shield it from further damage. It is particularly useful to treat pulley cords and sash, which can help prevent breakage.

It is important that any historic ironmongery such as sash stays and latches are retained and rehabilitated instead of being replaced. They can be extremely difficult to replace without compromising the the original design. It is recommended that the use of modern aluminum fittings like sash lifts and chain stays should be avoided if feasible as they could cause corrosion and deterioration to timber frames and sashes.