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How to Restore Timber Sash Windows in Cambridge Many homes in Cambridge have sash windows that are traditional and homeowners are proud of the way they appear. However, sash windows may become stuck and difficult to open or close. This is often due moisture, which can cause the timber to swell. Box sash windows were previously operated with chains, cotton cords and lead weights. Modern sash window springs are hidden to solve this problem. 1. Aesthetics Contrary to PVC-u windows which are made according to imperial sizes that are modular, timber sash windows can be restored to their original dimensions. This allows the restoration of timber sash windows in order to meet the current energy requirements and conform to conservation regulations for areas. It also offers an option that is superior to uPVC options. Sliding sash windows were initially only used in large structures or public buildings, however this changed when production was less expensive and craftsmen were able to produce larger frames with more glass. By the late 18th century windows made of sash were the predominant wooden design in most British properties. Because they were simple to open sash windows allowed light into rooms without curtains. The early windows were made of glass that was plain, but in the 17th century, sash windows began to become more ornamental. They were initially made of colored glazing bars, also known as mullions. They were expensive initially, but as glass production became cheaper and more efficient, they were a common feature in many homes of the period. In the 19th century, it was possible to make large, sturdy glass that did not require supporting bars. This allowed the frame size to be increased even more, which in turn allowed for a wider view from the window. This was an important innovation. The introduction of the double-hung sliding sash was a important improvement that occurred in the I920s and beginning of the I930s. The double-hung sliding sash is another significant improvement that came about at the end of the I920s and at the beginning of the I930s. The most popular kind of sash is made from slow grown deal (pine) however oak was utilized in more prestigious buildings and in some earlier examples. A parting bead is used to separate the two sashes and it is important that this is maintained in order to avoid rattles and drafts. It is also essential that sash pulleys and idler wheels are kept in good condition as these assist in operating the window. 2. Energy efficiency As clearer and larger sheets of glass became available, sash window began to replace hinged casements. Plate glass was placed in frames of timber that were rebated, then secured with glazing sprigs and putty was applied to the frame's two sides to ensure watertightness. This kind of glazing gradually replaced the use of leaded lights. The introduction of sashes created the need for a wider range of ironmongery, including the most basic fittings, brass pulleys, lead (and later cast iron) weights, sash stops, shutter hinges and knobs, and a range of fasteners to hold the sashes to their the right place. They were often decorated with motifs, inscriptions or engraved patterns that identified the maker. Sash windows can be very energy efficient when they are maintained regularly. However, without this maintenance they can become draughty and let in cold air. Draughts can also be caused by the deterioration of paint and putty. This issue can be fixed with wood-to-timber products. The market for replacement windows rests on the belief that traditional windows are rotten and beyond economical repair, while they can be easily maintained with a bit of care. Repairs can be costly and cause lots of disruption to the home. Many homeowners choose to replace their windows with PVC-u from a huge “one-stop shop” installation company. They can replace all windows in a home in a single day, saving time and avoiding the need for various tradesmen to coordinate. They are also available with 'energy-saving' double-glazing, which can achieve higher energy efficiency ratings than those offered by traditional windows with sash. However these double-glazed units are unable to reproduce the proportions and section of historic timber sashes. 3. Security Traditional windows can be made secure without compromising their appearance. Ironmongery like mortice bolts, sash chain and sash locks can be put in place. These can be put in place so that the window is still capable of being opened to allow ventilation or cleaning. These products are often not noticeable since they are designed to be used in conjunction with sash windows. upvc repairs near me can be used with traditional sash window catch. These are best replaced with more robust models, such as those that incorporate double screws or sprung levers to decrease the possibility of being hammered. Sash-window frames were traditionally constructed from slow grown deal or, in the more elegant homes, from oak. If glazing bars have survived, they should be preserved, and where feasible, the wood of the cill should be replaced by the same wood. PVC-U companies usually provide a one-stop shop installation service that can remove and replacing windows on a complete home in one day, without the need to engage other tradespeople or coordinate visits from a number of different suppliers. 4. Ventilation Sash windows were introduced in the 17th century and allowed for a significant amount of light into buildings. By the end of the 18th century they were altered to allow more light into rooms, and larger glazing panes began to be produced. The result was a lighter appearance and windows with more elegance. Sash windows were introduced and required a new type of ironmongery. Early pulleys were made from wood, while later Victorian ones were made of brass or a mixture of lead and wood, and there were various types of shutter hinges and knobs. The ironmongery components should be retained and cleaned down so that the quality of their design can be appreciated. To ensure they remain in good condition, wooden windows must be maintained. Lack of regular attention may cause: sashes that no longer slide smoothly. holes in the frame allow water, which can cause damage and decay. break down of putty, allowing water to penetrate, which could cause decay in the frame and cill. Steel casement windows became popular in the I920s & I930s because they were sturdy and slim, cheap and matched the trend towards healthy living. Research has proven that softwood sash window are just as efficient as PVC-u windows and can even be more attractive. The window replacement industry has made a significant effort to convince homeowners that their old windows are rotten, draughty and beyond economic repair. Many old timber windows can be repaired and used for a long time with minor repairs. 5. Maintenance A traditional sash window needs regular maintenance and inspection. If you do not maintain your sash window, it can result in the sash cords breaking and the glazing bars deteriorating excessively. It could also cause the paint and putty to degrade. The removal of sashes could also result in structural movement within the frame, which can cause the sash not to close correctly. The sash may also become stuck in the open position, which allows water and draughts to enter the building. The damage to timber windows is usually caused by moisture entry. This can be avoided with regular repairs by thorough painting and eliminating the cause of dampness. The paint can be removed to expose the soft, decaying wood. Any timber that is rotting should be cut out and the affected area carefully scarfed or pieced in using replacements made of the same type of timber as the ones remaining. This method of repair maximizes the amount of fabric used in the first place and is one of least invasive ways to treat wood-to-timber rot. The use of a resin-based wood consolidant is an alternative to the traditional method of sanding and staining. This is brushed onto the surface of the timber to help stabilize it and shield it from further damage. It is especially beneficial for the treatment of sash and pulley cords, which can stop breakage. It is essential that any old ironmongery like sash stays and latches are kept and restored instead of replaced. These items can be very difficult to replace without compromising the the original design. It is recommended that the use of modern aluminium fittings like sash lifts and chain stays is avoided if at all feasible as they could cause corrosion and deterioration of frames and sashes made of timber.