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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge feature traditional sash window and the homeowners are proud of their appearance. However, sash windows may get stuck and be difficult to open or close. This is usually due to moisture that can cause the timber to swell.

Box sash windows were previously operated using chains or cotton cords, as well as lead weights. Modern window springs for sash windows are concealed to eliminate this issue.

1. Aesthetics

In contrast to PVC-u windows, which are constructed according to imperial sizes that are modular the timber sash windows are able to be restored to their original dimensions. This allows the restoration of timber sash windows in order to meet current energy requirements and comply with conservation regulations for areas. It also provides windows with a more attractive appearance than uPVC alternatives.

Sliding sash window frames were initially intended for large structures or public buildings. However this changed as production became cheaper and artisans could create larger frames using larger glass. By the late 18th century Sash windows were the most popular wooden style in a majority of British properties. Sash windows were simple to operate and let light in rooms without the use of curtains.

The first windows were made of glass that was plain however, by the 17th Century sash windows started to become more attractive. They began with colored glazing bars or mullions. They were expensive at first, but as glass production became cheaper and more efficient, they became an integral feature in many historic homes.

In the 19th century, it was possible to manufacture large, sturdy glass that didn't require supporting bars. This allowed the frame size to be enlarged further and this in turn allowed for a wider view from the window. This was a very important advancement.

Another significant 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 buildings.

Oak was used for older examples and more prestigious buildings. A parting bead is used to separate the two sashes, and it is vital that it is maintained in order to avoid rattles and drafts. The idler wheels, sash pulleys and sash rollers also are essential to the operation of the window.

2. Energy efficiency

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

The introduction of sashes led to a need for a much wider range of ironmongery, with the basic fittings being brass pulleys as well as lead (and later cast iron) weights, sash stops shutter hinges and knobs as well as a range of fasteners used to keep the sashes into place. These were usually decorated with motifs, inscriptions, and engravings to identify the maker.

Sash windows are energy-efficient with regular maintenance. However, without this maintenance they can become drafty and let in cold air. Paint and putty can cause draughts. This can be corrected making use of wood-to-timber repair tools that are proprietary.

The replacement window installation Cambridge industry relies heavily on the perception that old windows are damaged beyond repair and therefore cannot be maintained economically. However, they can easily be maintained with a little attention. However, these repairs can be expensive and involve considerable disruption to the home. To avoid this homeowners often 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 multiple tradesmen to coordinate. These windows can be fitted with 'energy-saving double glazing to get more energy efficient ratings than a traditional windows made of sash. Double-glazed windows aren't capable of replicating the proportions or section of the sashes made of timber from the past.

3. Security

It is possible to secure windows that are traditional without compromising their appearance. A variety of ironmongery types can be installed with sash chains, mortice bolts and locks for sash. They can be positioned in a manner that the window repairs cambridge is able to be opened to allow ventilation and cleaning. They are generally minimal in appearance, as they are designed to complement the sash window. They can be used in conjunction with traditional sash-window catches, which should be replaced with more robust models (such ones that have double glazing near me screws) or spring-loaded levers to minimize the possibility of them being hammered out.

Sash-window frames were traditionally constructed from slow grown deal or, in more prestigious houses, from oak. When glazing bars have survived they should be kept, and if it is possible, the timber of the cill should be replaced with identical wood. PVC-u companies typically provide a one-stop shop installation service, removing and replacing windows on an entire house in a day without the need to engage other tradespeople, or coordinate visits from a number of different suppliers.

4. Ventilation

When sash windows were first introduced in the 17th century they allowed a significant amount of light to flood into structures. At the end of the 18th century, they had been modified so that more light could be let into the rooms. Larger glazing panes were also produced. The result was a much lighter appearance, and windows with a greater level of elegance than they had before.

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

To keep them in good condition, wooden windows must be maintained. Inattention to maintenance routinely could result in:

Sashes that do not move easily.

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

Water can penetrate the putty and cause decay to the frame or cause cill.

Steel casement windows gained popularity in the I920s and I930s because they were sturdy and slim, cheap and complemented the trend for healthy living. Research has shown that softwood sash window 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 rotten drafty, noisy and beyond repair. Many old windows made of timber can be fixed and utilized for a longer period 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 wearing out excessively. It can also cause paint and putty to deteriorate. The removal of sashes could also result in structural movement within the frame which causes the sash to be misaligned and in a position that it is not able to close properly. It is also possible for the sash be snagged or fixed in an open position and this can let water and draughts in the structure.

Moisture penetration is the most common cause of damage to timber windows. This can be avoided with regular maintenance by thorough painting and eliminating the cause of dampness. The paint can be removed to expose the soft, decaying wood. The rotten timber sections should be carefully removed and the affected area should be scarfed or glued together by using replacements of the same nature as the rest of the timber. This method of repair maximizes the amount of fabric retained and is among the least invasive methods of treating decay caused by timber.

The use of a resin-based wood consolidant is an alternative to the traditional method of staining and sanding. It is brushed on the surface of the wood to stabilise and protect it from further damage. It is particularly beneficial for the treatment of pulleys and sash cords which help stop breakage.

It is essential to preserve and not replace any historic ironmongery, such as sash latches and stays. It is difficult to replace these items without altering their original design. It is also recommended that modern fittings made of aluminium like sashlifts, as well as chainstays, be avoided as they can cause deterioration and corrosion of timber frames and sashes.