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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge feature traditional sash window mechnism repair and homeowners are proud of their appearance. Sash windows can get stuck and are difficult to open or close. This is typically due to moisture which can cause the wood to swell.

Box sash windows were historically operated by chains or cotton cords as well as lead weights. Modern window springs for sash windows are concealed to avoid this issue.

1. Aesthetics

Contrary to PVC-u windows which are constructed to modular imperial sizes the timber sash windows are able to be restored to their original size. This lets the restoration be in line with modern energy requirements while still complying with conservation regulations for the area. It also offers a window with a far superior appearance than Upvc Locksmith Cambridge alternatives.

Sliding windows with sash were initially only used in large buildings or public buildings. However the production became more affordable and artisans could produce larger frames with greater glass. In the late 18th century windows made of sash were the predominant design of wood in the majority of British homes. As they were easy to open, sash windows let light into rooms without curtains.

Early windows were plain glass but by the 17th century sash windows started to become more decorative, with coloured glazing bars and moulded mullions. These windows were quite expensive at the time, but as glass production became more efficient and cheaper they became a feature of many of the period homes.

In the 19th century, it was possible to create large, sturdy glass that didn't require support bars. This allowed the frame size to increase further, which gave a better view from the window. This was a significant innovation.

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

The most commonly used type of sash is constructed of slow-growing deal (pine) however oak was used in the more luxurious buildings and in earlier examples. A parting bead separates the two sashes. It is important that this is well maintained to prevent rattles and drafts. It is also important that the idler and sash pulley wheels are in good condition as these aid in operating the window.

2. Energy efficiency

As clearer and larger glass sheets became available, sash windows began replacing hinged casements. They were made of plate glass, set in timber frames with rebates and secured with glazing sprigs, and then putty on both sides to create a watertight seal. This type of glazing gradually replaced led lights.

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

With regular maintenance, sash windows are very energy efficient. If they are not maintained they could become noisy. Draughts can also result from the degeneration of putty and paint. You can fix this problem with wood-to-timber products.

The industry of replacement windows is based on the assumption that old windows are damaged and beyond economical repair, but they are able to be maintained with just a little care. However, these repairs to upvc doors can be costly and cause significant disruption to your home. Many homeowners opt to replace their windows using PVC-u from a large 'one-stop shop' installation company. They can replace all windows in a home in a single day, saving time and eliminating the need for various tradesmen to coordinate. These windows can be equipped with energy-saving double glazing to get higher energy ratings than traditional windows with sash. These double-glazed windows aren't able to replicate the proportions and section of the sashes made of timber from the past.

3. Security

It is possible to secure traditional windows without compromising their appearance. Ironmongery like sash chain, mortice bolts and sash locks can be used. They can be fitted to ensure that the window remains able to be opened for ventilation or for cleaning. They are usually unobtrusive as they are designed to be used in conjunction with sash windows. They can be utilized in conjunction with traditional sash window catches and should be replaced with more robust versions (such ones that have double screws) or sprung levers to reduce the chance of them being hammered open.

Sash-window frames are usually made from oak or slow-grown deal. If the glazing bars are intact and are not damaged, they should be left. If it is it is possible, the cills of the timber should be replaced by wood that is in line with. PVC-U companies usually offer a one stop shop installation service that can remove and replacing windows across a house in a day without the need to engage other tradespeople or coordinate visits from a number of different suppliers.

4. Ventilation

When sash windows were first introduced in the 17th century they allowed a large amount of light into structures. 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 lighter appearance and windows with more elegance.

Sash windows were introduced, which required a new type of ironmongery. Early pulleys were made from wood, whereas later Victorian ones could be made of brass or a combination of lead and wood and there were a variety of shutter hinges and knobs. The ironmongery components should be maintained and cleaned to ensure that the exquisite quality of their design can be appreciated.

Timber windows require regular maintenance to keep them in good shape. A lack of attention to them regularly could result in:

Sashes that do not slide smoothly.

holes in the frame that allow water, which can cause damage and decay.

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

In the I920s and I930s, steel casement windows gained popularity due to their durability, slim and cheap and were in line with the trend for healthy living. However, research has revealed that traditional softwood sash windows are just as thermally efficient as double-glazed PVC-u windows and are more attractive than the sleek lines of modern casement windows.

The industry of replacement windows was able to convince homeowners that their old windows were decayed and drafty. They were also beyond the budget for repair. Many old windows made of timber can be repaired and used for a long time with minor repairs to upvc doors.

5. Maintenance

The traditional sash windows require regular maintenance and inspection. Inability to maintain it properly can lead to sash cords breaking, excessive wear on the glazing bars, and degradation of the paint and putty. The removal of the sashes could also result in structural movement within the frame that causes the sash to become misaligned and unable to close correctly. It is also possible for the sash to be stuck or slammed into an open position and this can let water and draughts enter the structure.

Moisture penetration is a frequent cause of damage to windows made of timber. This can be prevented by thorough painting, regular repairs, and removing the source of dampness. The paint can be removed to expose the soft, decaying wood. Any rotten sections of timber must be removed and the affected part carefully scarfed or pieced in using replacements made of the same kind of timber as the ones that remain. This method of repair maximizes the amount of fabric that is left and is among the least invasive methods of treating timber-to-timber decay.

A resin-based wood condenser is an alternative to traditional process of sanding or staining. This is brushed onto the surface of the timber to stabilize it and shield it from further damage. It is particularly useful in the treatment of pulleys and sash cords which can help stop breakage.

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