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How to Restore Timber Sash Windows in Cambridge Many homes in Cambridge have sash windows with traditional designs and homeowners are proud of the way they appear. Sash windows can become stuck and are difficult to open and close. This is often due to moisture which can cause the timber to swell. Traditionally, windows made of box sash utilized chains, cotton cords or weights made of lead to operate. Modern window springs for sash windows are concealed to eliminate this issue. 1. Aesthetics Timber sash windows, unlike PVC-u windows which are manufactured in imperial sizes and are modular, are able to be restored to their original size. This allows the restoration to meet modern day energy requirements while still complying with conservation areas regulations. It also offers a window with a far superior appearance than the uPVC alternatives. Sliding frames for windows made of sash were originally only used for large buildings or public buildings. However this changed as production became less expensive and craftsmen could create larger frames using more glass. In the 18th century, windows made of sash were the predominant design of wood in the majority of British properties. Sash windows were simple to operate and let light in rooms without the need for curtains. The first windows were made of clear glass, but by the 17th Century sash windows started to become more attractive. They were initially made of colored glazing bars or mullions. They were costly at the beginning but as glass production became cheaper and more efficient, they were a common feature in many period houses. In the 19th century, it was possible to make large, strong glasses that didn't require support bars. This allowed for the frame to be made larger and, in turn, gave an improved view. This was a significant innovation. Another significant improvement was the introduction of the double-hung sliding windows at the end of I920s and at the beginning of the I930s. The double-hung sliding sash is 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 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 essential that it is maintained in order to avoid rattles and draughts. It is also important that the idler and sash pulley wheels are in good condition as these assist in operating the window. 2. Energy efficiency Sash windows were replaced by hinged casements as clearer and larger sheets were made available. Plate glass was placed in frames of timber that were rebated, then secured with glazing sprigs and putty was applied to the frame's sides for watertightness. This kind of glazing gradually replaced the leaded light bulbs. Sashes were introduced, which resulted in increased demand for ironmongery. The basic fittings included brass pulleys (and later cast-iron) weights, sash stoppers shutter hinges, handles and shutter hinges, and various fasteners used to fix the sashes. They were often decorated with motifs, inscriptions, and engraved patterns to identify the maker. Sash windows are energy efficient if they are maintained regularly. Without this maintenance, they can become drafty. Draughts can also be caused by the deterioration of putty and paint. This can be remedied by using proprietary wood-to-timber repair products. The industry of replacement windows is based on the perception that traditional windows are rotten and beyond repair, while they are able to be maintained with a little attention. These repairs can be costly and cause a lot of disruption in the home. To prevent this, many homeowners choose to replace their windows with PVC-u windows from one the largest 'one stop shop' installation companies. They can replace and remove all windows in an entire house in a single day, eliminating the need to co-ordinate different tradesmen and making the entire process much more efficient. These windows can be fitted with 'energy-saving double glazing to get higher energy ratings than the traditional windows with sash. However these double-glazed units are unable to replicate the section and proportions of the sashes made of timber from the past. 3. Security Traditional windows can be secured without compromising their aesthetics. Ironmongery, such as sash chain, mortice bolts and sash lock could be put in place. These can be put in place to ensure that the window is open for ventilation or cleaning. These products are often not noticeable since they are designed to be used in conjunction with sash windows. They can be used in conjunction with traditional sash-window catchers and are required to be replaced with more robust versions (such as those incorporating double screws) or spring-loaded levers to minimize the risk of them being hammered out. Sash-window frames were made from slow-growing deal or, in more elegant homes made of oak. If the glazing bars are still in good condition and are not damaged, they should be left. If feasible, the cills made of timber should be replaced by timber that is compatible with. PVC-U companies usually offer a one stop shop installation service, which includes removing and replacing windows on an entire house in a day without the need to engage other tradespeople or co-ordinate various visits from different suppliers. 4. Ventilation Sash windows were first introduced in the 17th century and allowed for a large amount of light into buildings. In the 18th century, they had been adapted so that even more light could be let into rooms. Larger glass panes were also created. The result was a lighter look and windows with more elegance. Sash windows were introduced, which required a new type of ironmongery. Early pulleys were made from wood, while later Victorian ones were made from brass or a combination of lead and wood and there were various types of shutter hinges and knobs. Ironmongery elements must be maintained and cleaned so that the quality of their design can be appreciated. Timber windows require regular maintenance to keep them in good condition. Inattention to maintenance can lead to: Sashes that no longer slide smoothly. holes in the frame that admit water that can cause decay and damage. break down of putty allowing water to penetrate, which could cause decay in the frame and cill. Steel casement windows gained popularity in the I920s and I930s due to their strength and slim, cost-effective and matched the trend towards healthy living. However, research has revealed that traditional softwood sash windows can be just as efficient in thermal efficiency as double-glazed windows made of PVC-u, and may be more appealing than the sleek lines of contemporary casement windows. The industry of replacement windows did a lot to convince homeowners that their old windows were rotten, drafty and beyond economical repair. However, windows cambridge made of timber are in good condition and, with minor repairs, could easily be repaired for many years to come. 5. Maintenance A traditional sash window needs regular maintenance and inspection. If you don't maintain your window's sash, it could lead to the sash cords breaking, and the glazing bars wearing out excessively. It could also cause paint and putty to become damaged. The removal of sashes may also result in structural movement within the frame, which can cause the sash to not close properly. It is also possible for the sash be stuck or slammed into an open position, which can let water and draughts into the property. Damage to windows made of timber is often caused by moisture infiltration. This can be prevented by thorough painting, regular repairs and the elimination of the source of dampness. The paint can be removed to expose the soft, rotting wood. The rotten timber sections should be carefully removed and the affected part should be scarfed or pieced together by using replacements of the same kind as the timber that remains. This method of repair maximizes the amount of fabric that is left and is among the least invasive methods for treating decay caused by timber. The use of a wood consolidant made from resin is another alternative to the traditional method of staining and sanding. It is brushed onto the surface of the wood to protect it and stabilise it. It is particularly beneficial for the treatment of pulleys and sash cords where it can help to prevent breakage. It is essential to preserve and not replace any historic ironmongery, like stay latches and sash latches. It can be difficult to replace these items without compromising their original design. It is recommended that the use of modern aluminum fittings, such as chain stays and sash lifts should be avoided if feasible as they could cause corrosion and damage to timber frames and sashes.