corkedward2

How to Restore Timber Sash Windows in Cambridge Many homes in Cambridge have traditional sash windows and homeowners are proud of their appearance. Sash windows can become stuck and be difficult to open and close. This is usually due moisture, which can cause the wood to swell. Traditionally, window boxes utilised chains, cotton cords or weights made of lead to operate. Modern windows with sash springs are concealed to solve this problem. 1. Aesthetics Unlike PVC-u windows that are manufactured according to the modular imperial size Timber sash windows can be restored to their original size. This lets the restoration meet modern day energy requirements while ensuring compliance with conservation area regulations. It also provides windows with a superior appearance than uPVC alternatives. Sliding frames for windows made of sash were originally only used for large buildings or public buildings. However, this changed when production became less expensive and craftsmen could create larger frames using more glass. By the end of the 18th century, sash windows had become the most popular wooden style in British homes. Because they were simple to open, sash windows let light into rooms without curtains. The first windows were made of glass that was plain however, by the 17th Century sash windows started to become more attractive. They began with colored glazing bars, also known as mullions. These windows were quite expensive at the time, but as glass production improved and less expensive, they were a common feature in numerous period houses. In the 19th century, it was possible to create large, strong glass that didn't require support bars. This allowed the frame's size to increase further, which allowed for a wider view from the window. This was a significant improvement. The introduction of the double-hung sliding sash was another important improvement that was made in the I920s and beginning of the I930s. This allowed both the upper and lower sash to be opened simultaneously, and allowed for better ventilation to the building. The most commonly used type of sash is made from slow grown deal (pine) but oak was used in the more luxurious buildings and in some earlier examples. A split bead divides the two sashes and it is important that this is well maintained to prevent rattles and drafts. The idler wheels, sash pulleys and sash rollers are vital to the 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 in timber frames with rebates and then pinned with glazing sprigs and putty on both sides to create a watertight seal. This kind of glazing gradually replaced leaded lights. Sashes were introduced, which resulted in increased demand for ironmongery. The most common fittings included brass pulleys (and later cast-iron) weights as well as sash stoppers shutter hinges, handles and shutter hinges as well as a variety of fasteners to secure the sashes. These were often decorated with motifs, inscriptions, and designs that were engraved to identify the maker. Sash windows are energy efficient when they are maintained regularly. If they are not maintained they could become drafty. Putty and paint can also cause draughts. This can be remedied by using proprietary wood-to-timber repair products. The market for replacement windows is based heavily on the perception that older windows are beyond repair and therefore cannot be maintained economically. However they can be maintained with a little attention. Repairs can be expensive and cause many disruptions in the home. To prevent this, many homeowners opt for a complete replacement with PVC-u windows made by one of the many “one stop shop” installation companies. They can replace all windows in a house 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 get more energy efficient ratings than are possible with traditional windows made of sash. These double-glazed units are not capable of resembling the proportions and section of historic timber sashes. 3. wooden casement windows in cambridge can be made secure without compromising their appearance. Many types of ironmongery are available with sash chains, mortice bolts, and locks for sash. They can be fitted in a way that the window is open to allow ventilation or for cleaning. These windows are typically unobtrusive as they are designed to work with sash windows. They can be utilized in conjunction with traditional sash-window catches that must be replaced by more robust versions (such ones with double screws) or sprung levers to reduce the risk of them being hammered open. Sash-window frames are typically constructed from oak or slow-grown deal. If glazing bars have survived, they should be kept, and, if possible, the timber of the cill should be replaced by identical wood. PVC-u companies often offer a one stop shop installation service that can remove and replacing windows on a complete house in a day without the need to involve 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 large amount of light into buildings. By the end 18th century, they were modified to allow more light could be let into the rooms. Larger glazing panes were also 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 of wood. Later Victorian ones were made of brass or a mix of wood and lead. There were also various types of shutter hinges and knobs. These ironmongery elements should always be maintained and cleaned so that the quality of their design can be appreciated. To keep them in good condition, wooden windows must be maintained. Inattention to maintenance routinely could result in: Sashes that don't slide smoothly. holes in the frame that admit water, which can cause damage and decay. break down of putty, allowing water to penetrate, which can lead to decay in the frame and cill. Steel casement windows gained popularity in the I920s & I930s due to their strength and slim, cheap and matched the trend towards healthy living. However, research has shown that traditional softwood sash windows are just as efficient in thermal efficiency as double-glazed PVC-u windows and are more attractive than the sleek lines of modern casement windows. The window replacement industry did a lot to convince homeowners that their old windows were rotten, drafty and beyond economical repair. Many old windows made of timber can be fixed and used for a long time with minor repairs. 5. Maintenance The traditional sash windows require regular maintenance and inspection. Inability to keep up with this could result in the sash cords breaking, a lot of wear on the glazing bars and degradation of the paint and putty. The removal of the sashes can also result in structural movement within the frame that causes the sash to move out of alignment and not closing properly. The sash may also become stuck in its open position, allowing the water and drafts to enter the building. Damage to windows made of timber is often caused by water entry. This can be prevented by regular repairs by thorough painting and eliminating the cause of dampness. The paint can be removed to reveal the soft, rotting wood. The sections that are rotting must be removed with care and the affected part should be snared together or glued together with replacements of the exact nature as the rest of the timber. This method of repair increases the amount of fabric that is left and is among the least invasive methods for treating timber-to-timber decay. The use of a wood consolidant made from resin is a different option to traditional sanding and staining. This is brushed on the surface of the wood to protect it and stabilize it. It is particularly beneficial for the treatment of pulleys and sash cords which help stop breakage. It is essential to preserve and not replace any old ironmongery, like the sash latches and stays. It is difficult to replace these items without altering their original design. It is recommended that the use of modern aluminum fittings such as sash lifts and chain stays is avoided if at all possible as they can cause corrosion and damage to timber frames and sashes.