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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 may get stuck and be difficult to open or close. This is usually due to moisture, which can cause the timber to expand.

Box sash windows were previously operated with chains, cotton cords and lead weights. Modern sash windows have hidden springs to solve this issue.

1. Aesthetics

Timber sash windows, unlike PVC-u windows that are made in imperial sizes and are modular, are able to be restored to original dimensions. This lets the restoration meet the current energy standards while still complying with conservation areas regulations. It also offers an option that is superior to the uPVC alternatives.

Sliding windows with sash were initially only used for large buildings or public buildings. However this changed as production became more affordable and artisans could produce larger frames with more glass. In the late 18th century sash windows were the dominant wooden design in most British properties. Because they were simple to open sash windows allowed light into rooms without curtains.

The first windows were made of plain glass, but by the 17th century, sash windows started to become more decorative, with coloured glazing bars and moulded mullions. These were very expensive at the time but as glass production became more efficient and cheaper they became a feature of many period houses.

In the 19th century, it became possible to make large, sturdy glasses that didn't require support bars. This allowed the frame to be made bigger and, in turn, gave an improved view. This was an important innovation.

Another significant improvement was the introduction of the double-hung sliding windows at the end of the I920s and beginning of the I930s. The double-hung sliding sash was another important improvement that was made at the end of the I920s and beginning of the I930s.

The most common type of sash is made of slow-growing deal (pine) however oak was used in the more prestigious buildings and in some earlier examples. It is crucial to maintain the parting bead that is used to separate the sashes. This will help prevent draughts and rattles. The sash pulleys, idler wheels and sash rollers also are crucial to the functioning of the window.

2. Energy efficiency

Sash windows replaced hinged casements as larger and clearer sheets were made available. Plate glass was placed in frames of timber that were rebated, then secured with glazing sprigs and putty was sprayed on the frame's sides to ensure watertightness. This type of glazing gradually superseded leaded lights.

Sashes were introduced, which led to an increase in demand for ironmongery. The most common fittings included brass pulleys (and later cast-iron) weights as well as sash stoppers, shutter hinges and handles as well as a variety of fasteners to secure the sashes. These were often decorated with motifs, inscriptions, and engravings that identified the maker.

With regular maintenance, sash windows are extremely energy efficient. Without this maintenance, they can become noisy. Draughts can also be caused by the breakdown of paint and putty. This can be fixed by making use of wood-to-timber repair tools that are proprietary.

The industry of replacement windows relies heavily on the perception that older 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 substantial disruption to the home. To prevent 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, saving time and avoiding the need for various tradesmen to coordinate. They can also be fitted with 'energy saving' double-glazing to get more energy efficient ratings than are possible with traditional windows made of sash. Double-glazed windows aren't capable of resembling the proportions or section of sashes from old timber.

3. Security

Traditional windows can be secured without compromising their aesthetics. Ironmongery like sash chain, mortice bolts, and sash window repair cambridge lock can be put in place. These can be installed in a way so that the window is able to be opened to allow ventilation and cleaning. They are generally not noticeable, since they are designed to fit the sash window doctor. They can be used with traditional sash window catch. They should be replaced by more robust models like ones that have double glazing cambridge screws or spring levers, to minimize the risk of being hammered.

Sash-window frames are traditionally made of oak or slow-grown deal. If the glazing bars are still intact and in good condition, they should be kept. If possible, the timber cills should be replaced with wood that is in line with. PVC-U companies usually provide a one-stop shop installation service, removing and replacing windows on a complete house in a day without the need to engage other tradespeople, or coordinate visits from different suppliers.

4. Ventilation

When sash windows were first introduced in the 17th century, they allowed a large amount of light into buildings. At the end of the 18th century, they were modified so that more light could be let into rooms. Larger glazing panes were also made. The result was a lighter appearance and windows with more elegance.

The introduction of sash windows also required an entirely new range of ironmongery. Early pulleys could be made from wood. Later Victorian ones were made of brass or a mixture of wood and lead. There were also different types of shutter hinges and knobs. The ironmongery components should be kept and cleaned so that the quality of their design can be appreciated.

To ensure they remain in good condition, wooden windows must be maintained. A lack of attention to them regularly could cause:

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 penetration that could cause decay in the frame and cill.

Steel casement windows became popular in the I920s & I930s because they were strong and slim, and also because they were cheap and matched the trend towards healthy living. Research has proven that softwood sash window and door repair near me are just as effective as PVC-u windows, and may even be more attractive.

The replacement window industry has done a great job convincing homeowners that their old windows were decayed and drafty. They were also beyond the budget for repair. Many older timber windows can be repaired and used for many more years with minor repairs.

5. Maintenance

The traditional sash windows require regular maintenance and inspection. If you fail to maintain your window's sash, it could result in the sash cords breaking, and the glazing bars deteriorating excessively. It could also cause paint and putty become damaged. The removal of sashes could also cause structural movement in the frame, causing the sash to not close correctly. It is also possible for the sash be snagged or fixed in an open position, which can let water and draughts in the property.

Moisture penetration is the most common cause of damage to windows made of timber. This can be avoided with regular repairs as well as thorough painting, and then removing the cause of dampness. Wet rot is easily identified due to the wavy appearance of the existing paint which can be stripped to reveal soft, rotting timber. The rotten timber sections should be carefully removed, and the affected area should be scarfed or pieced together with replacements of the exact type as the remaining timber. This method of repair maximizes the amount of fabric that was originally used and is one of most minimally invasive methods of treating wood-to-timber rot.

The use of a resin-based wood consolidant is a different option to the traditional method of sanding and staining. It is brushed on the surface of the wood to stabilize it and shield it from further damage. It is particularly useful to treat pulley cords and sash where it can prevent breakage.

It is essential that any old ironmongery such as sash stay and latches are kept and rehabilitated instead of being replaced. It can be difficult to replace these items without altering their original design. It is also 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 of frames and sashes made of timber.