How to Restore Timber Sash Windows in Cambridge

Many homes in cambridge windows 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, which can cause the wood to expand.

Traditionally, box sash windows used chains, cotton cords or weights made of lead to operate. Modern sash window springs are hidden to avoid this issue.

1. Aesthetics

Timber sash windows, unlike PVC-u windows that are made in imperial sizes, which are modular, can be restored to original dimensions. This allows for the restoration of timber sash windows to meet the current energy requirements and comply with conservation area regulations. It also provides an option that is superior to the upvc window lock repair alternatives.

Sliding sash windows were originally only found in large buildings or public buildings, but this changed when production became cheaper and craftsmen could produce larger frames with more glass. At the end of the 18th century, sash windows had become the most popular wooden design in British homes. Because they were simple to open, sash windows let light into rooms without curtains.

The first windows were made of clear glass however, by the 17th Century the sash windows began to become more attractive. They started with coloured glazing bars, also known as mullions. They were costly initially, but as glass production became cheaper and more efficient, they became a common feature in many historic homes.

In the 19th century, it was possible to make large, sturdy glasses that didn't need support bars. This allowed the frame size to be increased even further and this in turn gave a better view from the Window weatherstripping. This was a very important improvement.

The introduction of the double-hung sliding sash is another important improvement that occurred at the end of the I920s and beginning of the I930s. The double-hung sliding sash was another significant improvement that came about at the end of the I920s and beginning of the I930s.

Oak was used in older and more luxurious buildings. A parting bead is used to separate the two sashes, and it is important that this is maintained to prevent rattles and drafts. 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 clearer and larger sheets became available. They were glazed with plate glass placed within timber frames with rebates and secured with glazing sprigs, with putty on both sides to ensure they were watertight. This type of glazing gradually superseded the leaded light bulbs.

The introduction of sashes created an need for a larger variety of ironmongery including the most basic fittings, brass pulleys as well as lead (and later cast iron) weights, sash stoppers shutter hinges, knobs and shutters, and a range of fasteners used to keep the sashes in the right place. These were often decorated with motifs, inscriptions and engraved patterns that identified the maker.

With regular maintenance, sash windows are extremely energy efficient. But, if you don't maintain them, they can become drafty and let in cold air. Paint and putty may cause draughts. This issue can be fixed with wood-to-timber products.

The replacement window seal repairs industry relies on the perception that older windows are old and beyond economical 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. To avoid this, many homeowners choose to replace their windows with PVC-u windows made by one of the largest "one stop shop" installation companies. These can remove and replace all windows in an entire house in just one day, eliminating the need to coordinate multiple tradesmen and making the whole process much faster. They are also available with 'energy-saving' double-glazing to achieve greater energy efficiency than are possible with traditional windows made of sash. These double-glazed windows aren't capable of replicating the proportions and section of historic timber sashes.

3. Security

It is possible to secure traditional windows without compromising their style. Many types of ironmongery can be fitted including sash chains mortice bolts and sash locks. They can be fitted in a way that the window remains able to be opened for ventilation or cleaning. They are generally minimal in appearance, as they are designed to fit the sash window. They can be used in conjunction with traditional sash-window catches that should be replaced with more robust models (such ones with double screws) or sprung levers to reduce the risk of them being opened by hammering.

Sash-window frames are typically made from oak or slow-grown deal. If glazing bars have survived, they should be kept and, if it is possible, the timber of the cill should be replaced with the same wood. PVC-U companies usually provide a one-stop shop installation service, which includes removing and replacing windows on an entire home in a single day without the need to involve other tradespeople, or coordinate visits from different suppliers.

4. Ventilation

Sash windows were introduced in the 17th Century and allowed for a huge amount of light to be absorbed into buildings. At the end of the 18th century, they were modified to allow more light could be let into the rooms. Larger glazing panes were also produced. The result was a lighter appearance and windows with more elegance.

Sash windows were introduced that required a brand new range ironmongery. Early pulleys were made from wood. Later Victorian ones were made of brass or a combination of wood and leaded. There were also a variety of types of knobs and shutter hinges. The ironmongery pieces need to be kept clean and preserved in order to appreciate their beautiful design.

To ensure they remain in good condition, timber windows need to be maintained. Lack of attention to them regularly could lead to:

Sashes that no longer slide easily.

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

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

In the I920s and I930s, steel casement windows grew in popularity due to their durability slim and affordable and were in line with the trend for healthy living. Studies have shown that softwood sash window 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 windows are rotten, draughty and beyond economic repair. The reality is that many old windows made of timber are in good shape and with minor repairs could easily be repaired for many years to come.

5. Maintenance

A traditional sash window requires regular maintenance and inspection. Inability to keep up with this could result in sash cords breaking, excessive wear on the glazing bars, and the deterioration of putty and paint. The removal of sashes could also cause structural movement in the frame, which can cause the sash not to close properly. It is also possible for the sash be stuck or fixed in an open position, which can let water and draughts into the property.

The damage to timber windows is often caused by moisture entry. This can be avoided by thorough painting, periodic repairs, and removing the cause of dampness. Wet rot can be identified by the wavy look of the existing paint which can be removed to reveal soft, rotting wood. Any rotten timber sections should be cut out and the affected area carefully scarfed or pieced in using replacements made of the same type of timber as those remaining. This method of repair increases the amount of original fabric that is left and is one of the least invasive ways of treating decay of timber to timber.

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

It is essential to preserve and not replace any old ironmongery, like the sash latches and stays. These items can be very difficult to replace without damaging the quality of the original design. It is also recommended that the use of modern aluminium fittings, such as sash lifts and chain stays is avoided whenever possible as they can cause corrosion and deterioration of frames and sashes made from timber.