How to Restore Timber Sash Windows in Cambridge

Many homes in cambridge double glazing have traditional sash windows and homeowners are proud of how they appear. Sash windows can become stuck and become difficult to open or shut. This is often due moisture, which can cause the timber to expand.

Traditionally, windows made of box sash utilized chains or cotton cord and weights made of lead to operate. Modern windows with sash springs are concealed to eliminate this issue.

1. Aesthetics

Timber sash windows, in contrast to PVC-u windows, which are made in imperial sizes that are modular, can be reconstructed to original dimensions. This allows the restoration of timber sash windows in order to meet the current energy requirements and comply with conservation area regulations. It also gives windows that have a superior appearance than upvc repairs alternatives.

Sliding windows with sash were initially only found in large buildings or public buildings, but this changed when production became less expensive and craftsmen could produce larger frames with more glass. By the late 18th century windows made of sash were the predominant wooden style in a majority of British homes. Sash windows were easy to operate and let light into rooms without the need for curtains.

The early windows were made of glass that was plain, but by the 17th Century sash windows started to become more attractive. They started with coloured glazing bars, also known as mullions. They were expensive at first, but as glass production became less expensive and more efficient, they became a common feature in many homes of the period.

In the 19th century, it was possible to produce large, sturdy glasses that did not require supporting bars. This allowed the frame to be made bigger, which in turn gave an improved view. This was a very important advancement.

The introduction of the double-hung sliding sash was another significant improvement that came about towards the end of the I920s and at the beginning of the I930s. This allowed both the lower and upper sash to be opened at the same time and gave improved ventilation to a building.

Oak was used for older examples and for more prestigious buildings. A parting bead separates the two sashes. It is vital that it is well maintained to prevent rattles and draughts. It is also essential that sash pulleys and idler wheels are kept in good condition as these help to operate the window.

2. Energy efficiency

As larger and clearer glass sheets became available, sash window began to replace hinged casements. Plate glass was set into rebated timber frames, which were pinned with glazing sprigs, and putty was applied to the frame's two sides for watertightness. This form of glazing gradually superseded the leaded light bulbs.

The introduction of sashes created the need for a wider range of ironmongery, including the most basic fittings, brass pulleys and lead (and later cast iron) weights, sash stoppers shutter hinges and knobs and a variety of fasteners to hold the sashes to their the right place. These were usually decorated with designs, inscriptions, and engravings to identify the maker.

Sash windows can be very energy efficient when they are maintained regularly. But, if you don't maintain them, they can become draughty and let in cold air. Paint and putty can cause draughts too. It is possible to fix this issue by using wood-to-timber solutions.

The market for replacement windows rests on the perception that older windows are old and beyond repair, but they can be maintained with a little attention. However, these repairs can be expensive and involve substantial disruption to the home. Many homeowners choose to replace their windows using PVC-u from a "one-stop shop" company for installation. They can replace all windows in a house in a single day, saving time and avoiding the need for different tradesmen to coordinate. These windows can be fitted with 'energy-saving double glazing to get higher energy ratings than traditional windows made of sash. However, these double-glazed units cannot replicate the section and proportions of historic timber sashes.

3. Security

It is possible to secure windows that are traditional without compromising their appearance. Ironmongery, such as mortice bolts, sash chain and sash locks can be put in place. These can be installed in a manner that the window can still be opened for ventilation and cleaning. They are generally minimal in appearance, as they are designed to complement the sash window. They can be used with traditional sash window catches. These should be replaced by more robust versions, such as those with double screws, or sprung levers, to minimize the possibility of being hammered.

Sash-window repairs cambridge frames are typically constructed from oak or slow-grown deal. If the glazing bars remain intact, they should be retained. Where it is possible, the cills of the timber should be replaced with wood that is in line with. Many PVC-U companies offer a one-stop installation service. They can take out and replace windows on an entire house in just one day, without involving other tradespeople.

4. Ventilation

Sash windows were first introduced in the 17th century and allowed for a significant amount of light to be absorbed into buildings. By the end of the 18th century they were modified to let even more light into rooms, and larger glazing panes began to be made. The result was a much more streamlined appearance, and windows with a greater degree of elegance than before.

Sash windows were introduced and required a new range ironmongery. The first pulleys were made of wood, while later Victorian ones could be made of brass or a mixture of lead and wood, and there were various types of shutter hinges and knobs. These ironmongery pieces should be maintained and cleaned to appreciate their exquisite design.

To keep them in good condition, timber windows require regular maintenance. A lack of attention to them regularly could lead to:

Sashes that do not slide smoothly.

holes in the frame allow water causing damage and decay.

break down of putty, allowing water penetration, which could cause decay in the frame and cill.

In the I920s and the I930s steel casement windows increased in popularity because they were strong slim and affordable, and complemented the vogue for healthy living. Research has shown that softwood sash window are just as efficient as PVC-u windows, and may even be more attractive.

The industry of replacement windows has done a lot to convince homeowners that their traditional windows are dirty, noisy and beyond economic repair. Many old windows made of timber are repairable and can be utilized for a longer period with minor repairs.

5. Maintenance

A traditional sash plastic window Repair needs regular maintenance and inspection. Inability to keep up with this can result in the sash cords breaking, a lot of wear on the glazing bars and degradation of the paint and putty. The removal of sashes could also result in structural movement within the frame which causes the sash to move out of alignment and unable to close correctly. The sash could also get stuck in an open position, allowing water and draughts to enter the building.

The damage to timber windows is often caused by moisture penetration. This can be avoided by careful painting, regular repairs and elimination of the cause of dampness. Wet rot is easily identified due to the wavy appearance of the paint, which can be stripped to reveal soft, rotting timber. Any timber that is rotting should be cut off and the affected part carefully cut or pieced with replacements made of the same type of timber as the ones remaining. This method of repair maximises the amount of fabric that is left and is one of the least invasive methods for treating timber-to-timber decay.

The use of a resin-based wood consolidant is an alternative to traditional sanding and staining. This is brushed on the surface of the wood to protect it and strengthen it. It is particularly useful for the treatment of pulleys and sash cords which can help stop breakage.

It is essential to preserve and not replace any historical ironmongery such as the 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 aluminium fittings like chain stays and sash lifts is avoided if at all possible as they can cause corrosion and deterioration of frames and sashes made from timber.