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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have traditional sash windows 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 wood to swell.

Traditionally, window boxes utilised chains or cotton cord and lead weights to operate. Modern sash windows come with hidden springs to address this issue.

1. Aesthetics

Timber sash windows, unlike PVC-u windows that are made in imperial sizes and are modular, can be restored to original dimensions. This allows for the restoration of timber sash windows to meet current energy requirements and to comply with conservation area regulations. It also provides a window with a far superior appearance than the uPVC alternatives.

wooden sliding doors cambridge sash window frames were initially only used in large buildings or public buildings. However this changed as production became more affordable and artisans could create larger frames using greater glass. In the 18th century, windows made of sash were the predominant Wooden windows Cambridge design in most British homes. Sash windows were simple to operate and allowed light to enter rooms without the use of curtains.

Early windows were simple glass, but in 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 improved and cost-effective, they became a feature of many period houses.

In the 19th century, it was possible to create large, strong glasses that didn't require supporting bars. This allowed the frame size to be increased even further and this in turn gave a better view out of the window. This was an important advancement.

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

The most popular type of sash is made of slow-growing deal (pine) but 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 drafts. It is also important that sash pulleys and idler wheels are in good working order as they aid in operating the window repair specialists.

2. Energy efficiency

As larger and clearer sheets of glass became available, sash window started replacing hinged casements. They were glazed with plate glass set within rebated timber frames and then pinned with glazing sprigs, and then putty on both sides to make them watertight. This kind of glazing gradually replaced the leaded light bulbs.

Sashes were introduced, which led to increased demand for ironmongery. The basic fittings included brass pulleys (and later cast-iron) weights, sash stoppers shutter hinges, handles and shutter hinges as well as various fasteners used to fix the sashes. These were usually decorated with designs, inscriptions, and engravings to identify the maker.

Sash windows can be extremely energy-efficient with regular maintenance. Without this maintenance they can get drafty. Paint and putty may cause draughts too. It is possible to fix this issue by using wood-to-timber products.

The industry of replacement windows relies heavily on the notion that old windows are damaged beyond repair and are not able to be maintained economically. However, they can easily be maintained with a little attention. Repairs can be costly and cause lots of disruption to the home. Many homeowners choose to replace their windows with PVC-u from a "one-stop shop" company for installation. These can remove and replace all windows in an entire house within a single day, eliminating the need to co-ordinate different tradesmen and making the entire process much quicker. These windows can be equipped with energy-saving double-glazing to attain more energy efficient ratings than a traditional windows with sash. However, these double-glazed units cannot reproduce the proportions and section of historic timber sashes.

3. Security

Traditional windows can be secured without compromising their appearance. Ironmongery like sash chain, mortice bolts, and sash lock can be used. These can be put in place in a way that the window remains capable of being opened to allow ventilation or cleaning. These products are often unobtrusive as they are designed to work with sash windows. They can be used with traditional sash window catches. These are best replaced with more robust models, such as ones that have double screws or sprung levers, to minimize the risk of being hit with hammers.

Sash-window frames are traditionally constructed from oak or slow-grown deal. Where glazing bars have survived they should be preserved, and, if possible, the timber of the cill should be replaced by the same wood. Many PVC-U firms offer a one-stop shop installation service. They can remove and replace windows throughout a home in a single day, without involving any other tradespeople.

4. Ventilation

When sash windows were first introduced in the 17th century they allowed a large amount of light to flood into structures. At the end of the 18th century they were modified to let even more light into rooms and larger glass panes began to be manufactured. The result was a more light appearance and windows with more elegance.

The introduction of sash windows also demanded 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 leaded. There were also various kinds of knobs and shutter hinges. These ironmongery elements should always be kept and cleaned so that the fine quality of their design can be appreciated.

To keep them in good condition, timber windows need to be maintained. A lack of regular attention can result in:

sashes that no longer slide smoothly.

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

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

Steel casement windows became popular in the I920s & I930s because they were sturdy and slim, cost-effective and matched the trend towards healthy living. Research has shown that softwood sash windows are just as efficient as PVC-u windows, and may even be more attractive.

The window replacement industry has made a significant effort to persuade house owners that their traditional windows are rotten, draughty and beyond repair. However, many older windows made of timber are in good shape and with minor repairs could easily be maintained for years to be.

5. Maintenance

A traditional sash plastic window repair requires regular maintenance and inspection. If you do not maintain your sash window, it can result in the sash cords breaking and the glazing bars wearing out excessively. It can also cause paint and putty become damaged. The removal of sashes could also result in structural movement within the frame, causing the sash to not close correctly. The sash could also get stuck in its open position, allowing water and draughts to enter the property.

Damage to timber double glazed windows cambridge windows is usually caused by moisture penetration. This can be prevented by regular repairs by thorough painting and eliminating the cause of dampness. Wet rot is recognisable by the wavy appearance of the existing paint which can be stripped to reveal rotting, soft timber. The rotten timber sections should be carefully removed and the affected part should be scarfed or glued together by using replacements of the same kind as the timber that remains. This method of repair maximizes the amount of fabric retained and is among the least invasive methods of treating decay of timber to timber.

The use of a resin-based wood consolidant is another alternative to the traditional method of staining and sanding. The product is brushed on to the surface of the wood to stabilise and shield it from further damage. It is particularly useful for the treatment of pulleys and sash cords which can help prevent the breakage.

It is essential that any ironmongery from the past such as sash stays and latches are retained and restored instead of replaced. It is difficult to replace these items without compromising their original design. It is recommended that the use of modern aluminium casement windows cambridge fittings, such as chain stays and sash lifts is avoided whenever feasible as they could cause corrosion and deterioration of timber frames and sashes.