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How to Restore Timber Sash Windows in Cambridge Many homes in Cambridge have traditional sash windows and homeowners are proud of the way they appear. Sash windows can become stuck and become difficult to open or close. This is often due moisture that can cause the timber to swell. Traditionally, box sash windows utilised chains or cotton cords and lead weights to operate. Modern sash windows feature hidden springs to overcome this problem. 1. Aesthetics In contrast to PVC-u windows, which are manufactured according to imperial sizes that are modular, timber sash windows can be restored to their original size. This permits the re-installation of timber sash windows to meet the current energy requirements and to comply with conservation regulations for areas. It also provides a window with a far superior appearance than the uPVC alternatives. Sliding frames for windows made of sash were originally only used in large buildings or public buildings. However the production became less expensive and craftsmen could create larger frames using greater glass. By the end of the 18th century, sash windows had become the most sought-after wooden style in British homes. Since they were easy to open, sash windows let light into rooms without 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 first, but as glass production became less expensive and more efficient, they became commonplace in many period houses. In the 19th century, it was possible to create large, strong glasses that didn't need support bars. This allowed the frame's size to increase more, which in turn allowed for a wider view from the window. This was a significant advancement. The introduction of the double-hung sliding sash was another important improvement that was made in the I920s and at the beginning of the I930s. This allowed both the lower and upper sash to be opened simultaneously and gave improved ventilation to the building. The most popular type of sash is constructed from slow grown deal (pine) but oak was used in the more expensive buildings as well as in earlier examples. A parting bead is used to separate the two sashes. It is essential that it is maintained in order to avoid rattles and drafts. The sash pulleys, idler wheels and sash rollers are vital for the proper operation of 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 pinned with glazing sprigs and putty was then sprayed onto the frame's sides for watertightness. This form of glazing gradually superseded leaded lights. Sashes were introduced, which resulted in increased demand for ironmongery. The basic fittings included brass pulleys (and later cast-iron) weights and stoppers for sashes, shutter hinges and handles, and a variety of fasteners to fix the sashes. These were usually decorated with patterns, inscriptions and patterns engraved to identify the maker. Sash windows are energy efficient when they are maintained regularly. However, if they are not maintained, they can become drafty and let in cold air. Putty and paint can cause draughts. It is possible to fix this issue by using wood-to-timber solutions. The market for replacement windows is based heavily on the belief that old windows are beyond repair and are not able to be maintained economically. However they can be maintained with a little attention. However, glaziers cambridge can be expensive and involve significant disruption to your home. Many homeowners opt to replace their windows using PVC-u from a “one-stop shop” installation company. These can remove and replace all windows in a house in just one day, eliminating the need to coordinate multiple tradesmen, making the whole process much more efficient. They can also be supplied with energy-saving double-glazing to achieve higher energy efficiency ratings than are possible with traditional windows with sash. However, these double-glazed units cannot replicate the section and proportions of traditional timber sashes. 3. Security Traditional windows can be made secure without compromising their style. Ironmongery like mortice bolts, sash chain and sash locks can be put in place. These can be installed so that the window is still capable of being opened to allow ventilation or for cleaning. These are typically minimal in appearance, as they are designed to fit the sash window. They can be used with traditional sash window catches. They should be replaced by more robust versions like those with double screws, or sprung levers in order to reduce the chance of being struck by hammers. Sash-window frames were traditionally made from slow-growing deal or, in the more luxurious homes made of oak. If glazing bars have survived, they should be preserved, and, if it is possible, the timber of the cill should be replaced by identical wood. PVC-U companies usually provide a one-stop shop installation service, which includes removing and replacing windows on an entire home in a single day without the need to involve other tradespeople or coordinate visits from a number of different suppliers. 4. Ventilation Sash windows were first introduced in the 17th century and allowed for a huge amount of light into buildings. In the 18th century, they were modified so that more light could be let into the 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 type of ironmongery. The first pulleys were made of wood, while later Victorian ones were made of brass or a mixture of lead and wood, and there were a variety of shutter hinges and knobs. The ironmongery pieces need to be maintained and cleaned to appreciate their exquisite design. Timber windows require regular maintenance to keep them in good shape. Inattention to maintenance routinely could cause: sashes that no longer slide easily. holes in the frame allow water, which can cause damage and decay. break down of the putty and allow water penetration, which can lead to decay in the frame and cill. In the I920s and I930s steel casement windows grew in popularity due to their durability, slim and cheap and were in line with the trend for healthy living. However, research has proven that traditional softwood sash windows are as efficient in thermal efficiency as double-glazed windows made of PVC-u, and may be more appealing than the modern sleek design of casement windows. The replacement window industry has made a significant effort to convince homeowners that their old windows are rotten, draughty and beyond repair. However, many older timber windows are in good condition and, with minor repairs, could easily be maintained for years to come. 5. Maintenance Traditional sash windows require regular maintenance and inspection. Inability to maintain it properly can lead to broken sash cords, excessive wear on the glazing bars and deterioration of paint and putty. The removal of sashes could also result in structural movements within the frame, causing the sash not to close properly. The sash may also become stuck in the open position, which allows water and draughts into the building. Moisture penetration is a frequent cause of damage to windows made of timber. This can be avoided by regular maintenance by thorough painting and eliminating the cause of dampness. Wet rot is recognisable due to the wavy appearance of the paint, which can be stripped to reveal soft, rotting timber. The sections that are rotting should be carefully cut out and the affected part should be scarfed or glued together using replacements of the same type as the remaining timber. This method of repair increases the amount of fabric retained and is one of the least invasive methods of treating decay of timber to timber. A wood condenser made of resin is an alternative to traditional sanding or staining. This is brushed onto the surface of the timber to stabilise and protect it from further damage. It is especially useful for treating sash and pulley cords, where it can prevent breakage. It is important that any old ironmongery like sash stays and latches be kept and restored instead of replaced. It is difficult to replace these items without altering their original design. It is recommended that the use of modern aluminium fittings like sash lifts and chain stays is avoided whenever feasible as they could cause corrosion and deterioration to frames and sashes made of timber.