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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have sash windows that are traditional and the homeowners are proud of their appearance. Sash windows can get stuck and are difficult to open or shut. This is typically due to moisture that can cause the wood to swell.

Box sash windows were previously operated with chains, cotton cords and lead weights. Modern window springs for sash windows are concealed to avoid this issue.

1. Aesthetics

Unlike PVC-u windows that are manufactured to modular imperial sizes Timber sash windows can be restored to their original dimensions. This allows the restoration to meet modern day energy requirements while ensuring compliance with conservation area regulations. It also provides windows with a superior appearance than the uPVC alternatives.

Sliding sash windows were originally only used in large structures or public buildings, however the production process was less expensive and craftsmen were able to create larger frames using more glass. At the end of the 18th century, sash windows were the most popular wooden windows and doors cambridge design in British homes. As they were easy to open, sash windows let light into rooms without curtains.

The first windows were made of plain glass however, by the 17th Century, sash windows began to be more decorative. They started with coloured glazing bars, also known as mullions. These were very expensive at the time, but as glass production became more efficient and cost-effective, they were a common feature in many period houses.

In the 19th century, it was possible to produce large, sturdy glasses that didn't require support bars. This allowed the frame to be enlarged which, in turn, provided an improved view. This was a significant improvement.

Another important improvement was the introduction of the double-hung sliding windows 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 also improved the ventilation of a building.

Oak was used in older and more luxurious buildings. It is essential to keep the separation bead that divides the sashes. This will stop rattles and draughts. It is also important that sash pulleys and idler wheels are kept in good shape as they aid in operating the window.

2. Energy efficiency

Sash windows replaced hinged casements as larger and clearer sheets became available. Plate glass was placed in rebated timber frames, pinned with glazing sprigs and putty was then sprayed onto the frame's sides to ensure watertightness. This type of glazing gradually replaced the leaded light bulbs.

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 fix the sashes. These were often decorated with motifs, inscriptions or designs that were engraved to identify the maker.

Sash windows are energy efficient when they are maintained regularly. However, if they are not maintained, they may become drafty and let in cold air. Draughts can also be caused by the breakdown of paint and putty. You can fix this problem by using wood-to-timber solutions.

The market for replacement windows rests on the assumption that traditional windows are rotten and beyond economical repair, while they can be easily maintained with a little attention. However, these repairs are costly and can cause significant disruption to your 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 different tradesmen to coordinate. These windows can be equipped with energy-saving double glazing to get higher energy ratings than the traditional windows with sash. However double-glazed windows cannot reproduce the proportions and 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 sash locks. These can be installed in a manner that the window can still be opened to allow ventilation and cleaning. These are typically unobtrusive, as they are designed to match the sash window. They can be used in conjunction with traditional sash window catches. They are best replaced with more robust versions, such as those with double screws or sprung levers in order to reduce the possibility of being hit with hammers.

Sash-window frames were traditionally made from slow-growing deal or, in the more elegant homes made of oak. When glazing bars have survived they should be preserved, and, if possible, the timber of the cill should be replaced by matching wood. Many PVC-u firms offer a one-stop shop installation service. They can take out and replace windows throughout a home in one day, without involving any other tradespeople.

4. Ventilation

When sash windows first introduced in the 17th century, they allowed a significant amount of light into structures. At the end of the 18th century, they had been modified so that more light could be let into the rooms. Larger glass panes were also made. The result was a lighter appearance and windows that were more elegant.

Sash windows were introduced that required a brand new type of ironmongery. Early pulleys were made from wood. Later Victorian ones were made of brass or a mixture of wood and lead. There were also various kinds of shutter hinges and knobs. These ironmongery pieces should be cleaned and preserved to appreciate their beautiful design.

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

Sashes that no longer slide smoothly.

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

break down of putty, allowing water penetration that can lead to decay in the frame and cill.

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

The industry of replacement windows has done a lot to persuade house owners that their windows are old, dirty, and beyond repair. Many older timber windows are repairable and can be used for many more years with minor repairs.

5. Maintenance

A traditional sash window requires regular maintenance and inspection. Inability to maintain it properly could result in broken sash cords, excessive wear on the glazing bars, and the deterioration of putty and paint. The removal of sashes could also result in structural movement within the frame that causes the sash to move out of alignment and unable to close correctly. The sash can also be stuck in its open position, allowing water and draughts into the building.

The damage to timber windows is usually caused by moisture entry. This can be prevented with careful painting, regular repairs and the elimination of the cause of dampness. Wet rot is easily identified by the wavy appearance of the existing paint which can be stripped to reveal soft, rotting wood. The rotten timber sections must be removed with care and the affected area should be scarfed or pieced together with replacements of the exact type as the remaining timber. This method of repair increases the amount of fabric used in the first place and is one of most minimally invasive methods of treating wood-to-timber rot.

The use of a wood consolidant made from resin is an alternative to the traditional method of staining and sanding. It is brushed on the surface of the timber to stabilize it and shield it from further damage. It is especially beneficial for treating pulley cords and sash, which can stop breakage.

It is important to restore and not replace any old ironmongery such as sash latches and stays. It is difficult to replace these items without altering their original design. It is also recommended that the use of modern aluminum fittings, such as sash lifts and chain stays should be avoided if possible since they can cause corrosion and damage to frames and sashes made of timber.