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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. Sash windows can get stuck and are difficult to open and close. This is usually due to moisture, which can cause the timber to expand. Box sash windows were historically operated with chains or cotton cords, as well as weights made of lead. Modern sash windows feature hidden springs to overcome this problem. 1. Aesthetics Unlike PVC-u windows that are constructed according to imperial sizes that are modular the timber sash windows are able to be restored to their original sizes. This permits the re-installation of timber sash windows in order to comply with current energy standards and conform to conservation area regulations. It also provides a window that is far superior to the uPVC options. Sliding windows with sash were initially only used in large structures or public buildings, but this changed when production became cheaper and craftsmen could create larger frames using more glass. In the 18th century, Sash windows were the most popular design of wood in the majority of British homes. Sash windows were simple to operate and let light in rooms without the need for curtains. The first windows were made of clear glass however, by the 17th Century sash windows started to be more decorative. They started with coloured glazing bars or mullions. They were expensive at the beginning but when glass production became less expensive and more efficient, they became an integral feature in many homes of the period. In the 19th century, it was possible to make large, sturdy glasses that didn't need supporting bars. This allowed the frame's size to be enlarged further and this in turn gave a better view from the window. This was a significant innovation. Another significant improvement was the introduction of the double-hung sliding window at the end of I920s and at the beginning of I930s. This allowed both the lower and upper sash to be opened simultaneously and also improved the ventilation of buildings. The most popular type of sash is made from slow-growing deal (pine) however oak was utilized in more luxurious buildings and in earlier examples. A parting bead separates the two sashes. It is vital that it is well maintained to prevent rattles and draughts. The sash pulleys, idler wheels and sash rollers are essential for the proper operation of the window. 2. Energy efficiency As clearer and larger glass sheets became available, sash windows began replacing hinged casements. They were made of plate glass, set within rebated timber frames and secured with glazing sprigs, and then putty on both sides to ensure they were watertight. This type of glass gradually replaced led lights. Sashes were introduced, which resulted in an increase in demand for ironmongery. The most common fittings included brass pulleys (and later cast-iron) weights, sash stoppers shutter hinges and handles and a variety of fasteners to fix the sashes. They were often decorated with patterns, inscriptions and engravings to identify the maker. Sash windows are energy efficient when they are maintained regularly. If they are not maintained they can get draughty. Paint and putty can also cause draughts. This can be fixed by using wood-to-timber repair products that are specifically designed for this purpose. The replacement window industry relies heavily on the notion that old windows are damaged beyond repair and are not able to be maintained economically. However windows can be easily maintained with a little attention. Repairs can be costly and cause lots of disruption to the home. To avoid this homeowners often prefer to replace their windows with PVC-u windows from one of the many “one-stop shop” installation companies. They can replace all windows in a home in one day, thereby saving time and avoiding the need for different tradesmen to coordinate. These windows can be fitted with energy-saving double-glazing to attain higher energy ratings than traditional windows made of sash. However, these double-glazed units cannot replicate the section and proportions of traditional timber sashes. 3. Security Traditional windows can be made more secure without compromising their appearance. There are many types of ironmongery that can be fitted, including sash chains, mortice bolts, and locks for sash. They can be fitted in such a way that the window can be opened for ventilation and cleaning. These are typically unobtrusive, as they are designed to match the sash window. They can be used alongside traditional sash window catches and should be replaced with more robust versions (such ones that have double screws) or sprung levers to reduce the chance of them being hammered out. Sash-window frames are usually made from oak or slow-grown deal. If glazing bars have survived, they should be preserved, and, if possible, the timber of the cill should be replaced by identical wood. PVC-u companies typically provide a one-stop shop installation service, removing and replacing windows across a home in a single day without the need to involve other tradespeople or co-ordinate various visits from a number of different suppliers. 4. Ventilation When sash windows were first introduced in the 17th century, they allowed a substantial amount of light into buildings. By the end of the 18th century, they were altered to allow more light into rooms and bigger glazing panes started to be manufactured. The result was a lighter appearance, and windows with a higher degree of elegance than before. The introduction of sash windows also required a new range of ironmongery. Early pulleys were made of wood. Later Victorian ones were made of brass or a mixture of wood and lead. There were also a variety of types of knobs and shutter hinges. These ironmongery elements should always be kept and cleaned so that the quality of their design can be appreciated. Timber windows require regular maintenance to ensure they remain in good shape. Inattention to maintenance can result in: sashes that no longer slide easily. Holes in the frame which allow water to enter and cause decay and damage. The putty can be soaked by water and cause decay to the frame or the cill. Steel casement windows gained popularity in the I920s and I930s because they were sturdy and slim, and also because they were cheap and complemented the trend for healthy living. However, research has revealed that traditional softwood sash windows can be just as efficient thermally as double-glazed windows made of PVC-u, and can be more attractive than the sleek lines of modern casement windows. The industry of replacement windows has done a lot to persuade house owners that their traditional windows are rotten, draughty and beyond economic repair. The reality is that many older timber windows 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 fail to maintain your sash window, it can result in the sash cords breaking and the glazing bars wearing out excessively. It could also cause paint and putty to deteriorate. The removal of the sashes may also cause structural movement within the frame which causes the sash to become misaligned and not closing properly. It is also possible for the sash to be snagged 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 entry. This can be avoided with regular repairs as well as thorough painting, and then removing the source of dampness. Wet rot is easily identified due to the wavy appearance of the paint that can be removed to reveal rotting, soft timber. The sections of timber that are rotten should be carefully removed and the affected area should be scarfed or glued together with replacements of the exact type as the remaining timber. This repair method increases the amount of fabric that was originally used and is among the most non-invasive methods to treat wood-to-timber rot. The use of a wood consolidant made from resin is another alternative to the traditional method of sanding and staining. It is brushed onto the surface of the wood to protect it and stabilise it. It is particularly useful for the treatment of pulleys and sash cords which help stop breakage. aluminium french doors cambridge RepairMyWindowsAndDoors is essential that any old ironmongery such as sash stays and latches are kept and restored instead of replacing them. They can be extremely difficult to replace without harming the quality of the original design. It is also recommended that the use of modern aluminium fittings, such as sash lifts and chain stays is avoided whenever possible as they can cause corrosion and damage to frames and sashes made of timber.