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How to Restore Timber Sash Windows in Cambridge Many homes in Cambridge feature traditional sash window and the homeowners are proud of their appearance. However, sash windows may become stuck and difficult to open or close. This is usually due to moisture that can cause the timber to swell. Box sash windows were historically operated by chains or cotton cords as well as lead weights. Modern sash windows feature hidden springs to solve this problem. 1. Aesthetics Timber sash windows, unlike PVC-u windows that are made in imperial sizes, which are modular, are able to be restored to original dimensions. This lets the restoration meet the current energy standards while ensuring compliance with conservation area regulations. It also provides a window that is far superior to the uPVC alternatives. Sliding sash window frames were initially intended for large structures or public buildings. However this changed as production became less expensive and craftsmen could produce larger frames with greater glass. By the end of the 18th century, sash windows had become the most popular wooden style in British homes. As they were easy to open, sash windows let light into rooms without the need for 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. They were expensive at the time but as glass production improved and cheaper they were a common feature in numerous period houses. In the 19th century, it was possible to make large, strong glasses that didn't require support bars. This allowed the frame to be made larger and, in turn, gave a better view. This was a significant advancement. 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. The double-hung sliding sash was a important improvement that was made at the end of the I920s and beginning of the I930s. The most popular type of sash is made from slow-growing deal (pine) however oak was used in the more expensive buildings as well as in some earlier examples. It is essential to keep the parting bead that separates the sashes. This will prevent rattles and draughts. It is also essential that sash pulleys and idler wheels are in good shape as they aid in operating the window. 2. Energy efficiency Sash windows were replaced by hinged casements as clearer and larger sheets became available. Glass plates were set in rebated timber frames, pinned with glazing sprigs and putty was then sprayed onto the frame's sides for watertightness. This form of glass gradually replaced the leaded light bulbs. The introduction of sashes created a need for a much wider range of ironmongery, with the most basic fittings being brass pulleys as well as lead (and later cast iron) weights, sash stoppers, shutter hinges and knobs and a variety of fasteners to hold the sashes into place. These were often decorated in designs, inscriptions, and engraved patterns to identify the maker. With regular maintenance, sash windows are extremely energy efficient. Without this maintenance they could become draughty. Paint and putty may also cause draughts. This issue can be fixed with wood-to-timber products. The market for replacement windows rests on the perception that old windows are damaged and beyond economical repair, whereas they can be maintained with a bit of care. However, repairs to these windows can be costly and cause substantial disruption to the home. To avoid this homeowners often choose to replace their windows with PVC-u windows made by one of the largest 'one stop shop' installation companies. They can replace and remove all the windows in a home in a single day, avoiding the need to co-ordinate different tradesmen, making the whole process much quicker. These windows can be fitted with 'energy-saving' double glazing to achieve higher energy ratings than traditional windows made of sash. Double-glazed windows aren't capable of resembling the proportions or section of sashes from old timber. 3. Security Traditional windows can be secured without compromising their style. Ironmongery, such as sash chain, mortice bolts and sash lock could be put in place. window seal repairs near me can be fitted in a way that the window is open for ventilation or for cleaning. They are usually not noticeable since they are designed to work with sash windows. They can be used with traditional sash window catches. They should be replaced by more robust models, such as those with double screws or sprung levers to decrease the chance of being hit with hammers. Sash-window frames are usually made of oak or slow-grown deal. Where glazing bars have survived they should be kept, and if it is possible, the timber of the cill should be replaced with matching wood. PVC-u companies typically provide a one-stop shop installation service that can remove and replacing windows across a home in a single day without the need to engage other tradespeople, or coordinate visits from different suppliers. 4. Ventilation When sash windows first introduced in the 17th century, they allowed a large amount of light to flood into structures. In the 18th century, they were modified to allow more light could be let into rooms. Larger glazing panes were also made. The result was a much more streamlined appearance, and windows that had a higher level of elegance than they had before. The introduction of sash windows also demanded a new range of ironmongery. Early pulleys were made from wood, later Victorian ones could be made from brass or a mixture of lead and wood and there were many kinds of shutter hinges and knobs. The ironmongery pieces need to be cleaned and preserved to appreciate their fine design. Timber windows require regular maintenance to ensure they remain in good order. Lack of attention to them regularly can result in: Sashes that do not slide easily. holes in the frame that admit water that can cause decay and damage. break down of putty allowing water penetration, which can lead to decay in the frame and cill. Steel casement windows became popular in the I920s & I930s because they were strong and slim, and also because they were cheap and complemented the trend for healthy living. Studies have shown that softwood sash window are as efficient as PVC-u windows, and may even be more attractive. The replacement window industry has done a great job convincing homeowners that their old windows were decayed drafty, noisy and beyond repair. Many old timber windows can be repaired and utilized for a longer period with minor repairs. 5. Maintenance Traditional sash windows require regular maintenance and inspection. Inability to maintain it properly can result in sash cords breaking, excessive wear on the glazing bars and the deterioration of putty and paint. The removal of sashes can also result in structural movement within the frame, causing the sash to not close properly. The sash can also be stuck in the open position, allowing the water and drafts to enter the property. The damage to timber windows is usually caused by moisture entry. This can be prevented with thorough painting, periodic repairs and the elimination of the source of dampness. Wet rot can be identified by the wavy look of the paint, which can be stripped away to reveal soft, rotting wood. Any rotten sections of timber should be cut out and the affected part carefully scarfed or pieced in using replacements made of the same kind of timber as the ones remaining. This method of repair increases the amount of fabric that is left and is among the least invasive ways of treating decay of timber to timber. A resin-based wood condenser is an alternative to traditional sanding or staining. It is brushed onto the surface of the wood to protect it and stabilise it. It is especially beneficial for the treatment of pulley cords and sash, which can help prevent breakage. It is important to restore and not replace any historical ironmongery, such as 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 aluminium fittings like chain stays and sash lifts is avoided whenever possible since they can cause corrosion and damage to frames and sashes made from timber.