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How to Restore Timber Sash Windows in CambridgeMany homes in Cambridge feature traditional sash window and the homeowners are proud of their appearance. However, sash windows can get stuck and be difficult to open or close. This is often due to moisture, which can cause the timber to expand.Box sash windows were previously operated with chains or cotton cords as well as lead weights. Modern windows with sash springs are concealed to avoid this issue.1. AestheticsContrary to PVC-u windows which are made according to imperial sizes that are modular, timber sash windows can be restored to their original size. This allows the restoration to meet the current energy standards while complying with conservation areas regulations. It also provides windows with a superior appearance than uPVC alternatives.Sliding windows with sash were initially only used in large buildings or public buildings, however this changed as production became less expensive and craftsmen could produce larger frames with more glass. In the late 18th century sash windows were the dominant wooden style in a majority of British homes. Sash windows were simple to operate and let light into rooms without the use of curtains.Early windows were simple glass, but by the 17th century, sash windows started to become more attractive with coloured glass bars and moulded mullions. They were expensive at the time but as glass production became more efficient and cheaper they were a common feature in many of the period homes.In the 19th century it was possible to create large, sturdy glass that did not need 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 innovation.Another significant improvement was the introduction of the double-hung sliding windows at the end of the I920s and beginning of the I930s. This allowed both the upper and lower sash to be opened simultaneously, and also improved the ventilation of a building.The most commonly used type of sash is constructed from slow-growing deal (pine) however oak was utilized in more expensive buildings as well as in earlier examples. A parting bead is used to separate the two sashes and it is vital that it is maintained in order to avoid rattles and drafts. The sash pulleys, idler wheels and sash rollers are essential to the functioning of the window.2. Energy efficiencySash windows replaced hinged cases as clearer and larger sheets were made available. They were glazed with plate glass set within rebated timber frames and pinned in place using glazing sprigs, and then putty on both sides to make them watertight. This kind of glazing gradually superseded leaded lights.The introduction of sashes resulted in the need for a larger variety of ironmongery with the basic fittings being brass pulleys, lead (and later cast iron) weights, sash stoppers shutter hinges and knobs as well as a range of fasteners used to keep the sashes in place. These were usually decorated with patterns, inscriptions and engraved patterns to identify the maker.With regular maintenance, sash windows can be extremely energy efficient. Without this maintenance they can get drafty. Draughts can also be caused by the breakdown of paint and putty. You can fix this problem by using wood-to-timber solutions.The replacement window industry relies on the assumption that old windows are damaged and beyond economical repair, but they are able to be maintained with just a little care. Repairs can be expensive and cause a lot of disruption in the home. Many homeowners decide to replace their windows with 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 avoiding the need for various tradesmen to coordinate. They are also available with ‘energy saving’ double-glazing to achieve greater energy efficiency than are possible with traditional sash windows. These double-glazed units are not capable of replicating the proportions or section of sashes from old timber.3. SecurityTraditional windows can be secured without compromising their appearance. There are many types of ironmongery that can be installed with sash chains, mortice bolts and sash locks. These can be installed so that the window is still capable of being opened for ventilation or for cleaning. These products are usually minimal in appearance, as they are designed to fit the sash window. They can be used with traditional sash window catches. These are best replaced with more robust versions, such as those that incorporate double screws or sprung levers in order to reduce the risk of being struck by hammers.Sash-window frames were made from slow-growing deal or, in the more prestigious houses, from oak. If the glazing bars are in good condition and are not damaged, they should be left. If feasible, the cills made of timber should be replaced with timber that is compatible with. Many PVC-U companies offer a one-stop installation service. They can take down and replace windows throughout a home in a single day, without involving any other tradespeople.4. VentilationSash windows were first introduced in the 17th century and allowed for a large amount of light to enter buildings. At the end of the 18th century, they had been modified to allow more light could be let into rooms. Larger glass panes were also produced. The result was a lighter look and windows with more elegance.Sash windows were introduced that required a brand new range ironmongery. Early pulleys were constructed 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 components should be retained and cleaned down to ensure that the exquisite quality of their design can be appreciated.To ensure they remain in good shape, timber windows must be maintained. Lack of regular attention may result in:sashes that no longer slide smoothly.holes in the frame that allow water that can cause decay and damage.Water can get into the putty and cause decay to the frame or cill.Steel casement windows gained popularity in the I920s and I930s because they were sturdy and slim, cost-effective and matched the trend of healthy living. However, research has proven that traditional softwood sash windows can be just as thermally efficient as double-glazed PVC-u windows and may be more appealing than the modern sleek design of casement windows.The window replacement industry did a lot to convince homeowners that their old windows were rotten and drafty. They were also beyond the budget for repair. Many old timber windows can be fixed and used for many more years with minor repairs.5. MaintenanceTraditional sash windows require regular maintenance and inspection. If you fail to maintain your sash window, it can cause the sash cords breaking, and the glazing bars deteriorating excessively. It could also cause paint and putty deteriorate. The removal of sashes could also result in structural movement within the frame that causes the sash to move out of alignment and in a position that it is not able to close properly. The sash can also be stuck in the open position, allowing water and draughts to enter the property.Damage to timber windows is usually caused by moisture entry. This can be prevented with thorough painting, regular repairs, and removing the cause of dampness. The paint can be removed to reveal the soft, rotting wood. The rotten timber sections must be removed with care and the affected part should be scarfed or pieced together with replacements of the exact kind as the timber that remains. This repair method increases the amount original fabric and is among the most non-invasive methods to treat timber-to-timber rot.A wood condenser made of resin is an alternative to the traditional staining or sanding. ventilation repair cambridgeshire repairmywindowsanddoors is brushed on the surface of the wood to protect it and stabilize it. It is particularly useful in the treatment of sash cords and pulleys where it can help to prevent the breakage.It is crucial that any ironmongery from the past like sash stays and latches are kept and restored instead of replaced. These items are difficult to replace without damaging the the original design. It is also recommended that modern fittings made of aluminium like sashlifts and chainstays, be avoided as they can cause corrosion and deterioration of timber frames and sashes.