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How To Save Money On Sash Windows Cambridge
How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have traditional sash windows and homeowners are proud of how they appear. However, sash windows may become stuck and difficult to open or close. This is typically due to moisture, which can cause the wood to expand.

Box sash windows were traditionally operated by chains, cotton cords and lead weights. Modern sash window springs are hidden to eliminate this issue.

1. Aesthetics

In contrast to PVC-u windows, which are made to modular imperial sizes Timber sash windows can be restored to their original sizes. This allows the restoration to be in line with modern energy requirements while still complying with conservation areas regulations. It also comes with an option that is superior to uPVC options.

Sliding sash windows were originally only used in large buildings or public buildings, but this changed when production became cheaper and craftsmen could produce larger frames with more glass. At the close of the 18th century, sash windows were the most sought-after wooden style in British homes. Since they were easy 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 attractive with coloured glass bars and moulded mullions. They were expensive at the time but as glass production improved and less expensive, they became a part of many of the period homes.

In the 19th century, it was possible to produce large, strong glasses that didn't need support bars. This allowed the frame's size to be enlarged more, which in turn gave a better view out of the window. This was a significant innovation.

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

The most common type of sash is constructed from slow-growing deal (pine) however oak was also used in more luxurious buildings and in earlier examples. A parting bead separates the two sashes, and it is vital that it is maintained to prevent rattles and draughts. It is also essential that the idler and sash pulley wheels are in good shape as they aid in operating the window.

2. aluminium casement windows cambridge and larger glass sheets became available, sash windows began replacing hinged casements. Glass plates were set in frames made of timber, which were pinned with glazing sprigs and putty was applied to the frame's sides to ensure watertightness. This type of glazing gradually superseded leaded lights.

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

Sash windows can be extremely energy efficient if they are maintained regularly. If they are not maintained they could become draughty. Draughts can also be caused by the deterioration of paint and putty. It is possible to fix this issue by using wood-to-timber solutions.

The industry of replacement windows is based on the perception that older windows are old and beyond repair, while they can be easily maintained with just a little care. These repairs can be costly and cause a lot of disruption in the home. Many homeowners opt to replace their windows with PVC-u from a "one-stop shop" company for installation. They can replace all windows in a home in one day, saving time and avoiding the need for various tradesmen to coordinate. These windows can be equipped with energy-saving double glazing to get higher energy ratings than the traditional windows made of sash. These double-glazed units are not capable of resembling the proportions or section of the sashes made of timber from the past.

3. Security

It is possible to secure traditional windows without compromising on their aesthetics. Ironmongery such as sash chain, mortice bolts, and sash lock can be installed. These can be installed in such a way that the window is able to be opened to allow ventilation and cleaning. They are generally minimal in appearance, as they are designed to match the sash window. They can be used alongside traditional sash window catches, which should be replaced with more robust versions (such ones that have double screws) or spring levers to decrease the possibility of them being opened by hammering.

Sash-window frames were traditionally constructed from slow-growing deal or, in the more luxurious homes made of oak. When glazing bars have survived they should be preserved, and if it is possible, the timber of the cill should be replaced by matching wood. PVC-u companies typically offer a one stop shop installation service, which includes removing and replacing windows on a complete home in one day, without the need to involve other tradespeople, or coordinate visits from a number of different suppliers.

4. Ventilation

When sash windows first introduced in the 17th century, they allowed a substantial amount of light into buildings. In the 18th century, they had been 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 a greater quality of design than before.

The introduction of sash windows also necessitated a new range of ironmongery. Early pulleys were of wood, while later Victorian ones were made from brass or a mixture of wood and lead, and there were many kinds of shutter hinges and knobs. The ironmongery components should be kept and cleaned to ensure that the exquisite quality of their design can be appreciated.

Timber windows require regular maintenance to keep them in good condition. Inattention to maintenance routinely could result in:

sashes that no longer slide easily.

holes in the frame that admit water causing damage and decay.


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

Steel casement windows became popular in the I920s & I930s due to their strength and slim, cheap and matched the trend towards healthy living. However, research has revealed that traditional softwood sash windows are as thermally efficient as double-glazed PVC-u windows and are more attractive than the modern sleek design of casement windows.

The replacement window industry has done a great job convincing homeowners that their old windows were decayed, drafty and beyond economical repair. The reality is that many older windows made of wood are in good condition and with minor repairs can easily be repaired for many years to come.

5. Maintenance

A traditional sash window requires regular maintenance and inspection. Failure to do this can lead to broken sash cords, excessive wear on the glazing bars, and degradation of the paint and putty. The removal of the sashes can also result in structural movement within the frame which causes the sash to move out of alignment and unable to close correctly. The sash may also become stuck in its open position, allowing water and draughts to enter the building.

The damage to timber windows is usually caused by moisture penetration. This can be avoided by careful painting, regular repairs, and removing the cause of dampness. Wet rot is easily identified by the wavy appearance of the paint, which can be stripped away to reveal soft, rotting wood. Any rotten sections of timber must be removed and the affected area carefully scarfed or pieced in using replacements made from the same kind of timber as those remaining. This method of repair maximises the amount of original fabric retained and is among the least invasive methods for treating decay of timber to timber.

The use of a wood consolidant made from resin is an alternative to the traditional method of staining and sanding. This is brushed onto the surface of the wood to help stabilize it and shield it from further damage. It is particularly beneficial in the treatment of pulleys and sash cords which can help stop breakage.

It is crucial to restore and not replace any historic ironmongery, like stay latches and sash latches. It can be difficult to replace these items without compromising their original design. It is also recommended that modern aluminium fittings like sashlifts, as well as chainstays, should be avoided since they can cause deterioration and corrosion of timber frames and sashes.