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 can become stuck and difficult to open or close. This is usually due moisture, which can cause the wood to expand.
 Traditionally, box sash windows used chains or cotton cord and weights made of lead to operate. Modern sash windows have hidden springs to address this issue.
1. Aesthetics
Timber sash windows, unlike PVC-u windows, which are made in imperial sizes that are modular, can be restored to original dimensions. This lets the restoration be in line with modern energy requirements while ensuring compliance with conservation area regulations. It also offers a window that is far superior to upvc door repair alternatives.
Sliding frames for windows made of sash were originally intended for large structures or public buildings. However this changed as production became cheaper and artisans could make larger frames using more glass. By the late 18th century Sash windows were the most popular wooden style in a majority of British homes. Because they were simple to open sash windows allowed light into rooms without curtains.
Early windows were plain glass, but by the 17th century, sash windows were becoming more decorative with coloured glazing bars and moulded mullions. They were costly initially, but when glass production became less expensive and more efficient, they became an integral feature in many historic homes.
In the 19th century, it was possible to produce large, sturdy glasses that didn't need support bars. This allowed the frame to be made bigger which, in turn, provided the viewer a better view. This was a very important advancement.
Another important 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 lower and upper sash to be opened at the same time and allowed for better ventilation to buildings.
Oak was used in older and more luxurious buildings. A parting bead is used to separate the two sashes. It is essential that it is maintained to prevent rattles and drafts. It is also essential that sash pulleys and idler wheels are in good shape as they assist in operating the window.
2. Energy efficiency
Sash windows replaced hinged cases as larger and clearer sheets became available. They were made of plate glass, placed within timber frames with rebates and pinned in place using glazing sprigs, and then putty on both sides to ensure they were watertight. This type of glazing gradually replaced the leaded light bulbs.
Sashes were introduced, which resulted in increased demand for ironmongery. The basic 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 fix the sashes. They were often decorated with motifs, inscriptions or engravings that identified the maker.
Sash windows are energy efficient if they are maintained regularly. Without this maintenance, they can become draughty. Draughts can also be caused by the deterioration of paint and putty. This can be corrected using wood-to-timber upvc door repair products that are specifically designed for this purpose.
The replacement window industry relies heavily on the perception that old windows are beyond repair and cannot be maintained economically. However, they can easily be maintained with a little attention. These repairs can be costly and cause lots of disruption to the home. Many homeowners opt to replace their windows with PVC-u from a huge "one-stop shop" installation company. They can replace all windows in a house in one day, saving time and eliminating the need for various tradesmen to coordinate. They can also be fitted with energy-saving double-glazing to achieve more energy efficient ratings than those offered by traditional sash windows. These double glazing repairs cambridge-glazed windows aren't able to replicate the proportions and section of sashes from old timber.
3. Security
It is possible to secure traditional windows without compromising their appearance. Ironmongery such as sash chain, mortice bolts and sash lock could be used. They can be fitted in such a way that the window can be opened for ventilation and cleaning. They are generally unobtrusive, as they are designed to fit the sash window. They can be used with traditional sash window catches. They are best replaced with more robust models, such as those that incorporate double screws or spring levers to decrease the possibility of being hit with hammers.
Sash-window frames were made from slow-growing deal or, in more elegant homes, from oak. When glazing bars have survived they should be preserved, and, if possible, the timber of the cill should be replaced by the same wood. Many PVC-u firms offer a one-stop installation service. They can remove and replace windows on a complete home in a single day, without the need to involve other tradespeople.
4. Ventilation
Sash windows were first introduced in the 17th century and allowed for a huge amount of light to enter buildings. By the end 18th century, they had been modified to allow more light could be let into rooms. Larger glass panes were also made. The result was a more streamlined appearance, and windows with a higher degree of elegance than before.
Sash windows were introduced and required a new range ironmongery. The first pulleys were made of wood, later Victorian ones could be made from brass or a mixture of wood and lead, and there were many kinds of shutter hinges and knobs. These ironmongery pieces should be maintained and cleaned to appreciate their fine design.
Timber windows require careful maintenance to ensure they remain in good condition. Inattention to maintenance routinely could result in:
Sashes that do not slide easily.
holes in the frame that allow water causing damage and decay.
Water can penetrate the putty and cause decay to the frame or the cill.
In the I920s and the I930s steel casement windows increased in popularity due to their durability slim and inexpensive and also matched the fashion for healthy living. However, research has shown that traditional softwood sash windows can be just as efficient in thermal efficiency as double-glazed PVC-u windows and can be more attractive than the sleek lines of modern casement windows.
The window replacement industry has made a significant effort to persuade house owners that their old windows are dirty, noisy and beyond repair. However, many older windows made of wood are in good shape and with minor repairs can easily be serviceable for many years to come.
5. Maintenance
A traditional sash window requires regular maintenance and inspection. If you fail to maintain your sash window, it could result in the sash cords breaking, and the glazing bars wearing out excessively. It could also cause paint and putty degrade. The removal of sashes could also cause structural movement in the frame, causing the sash not to close properly. It is also possible for the sash to be snagged or fixed in an open position, which can let water and draughts in the property.
Moisture penetration is a common cause of damage to windows made of timber. This can be avoided with regular maintenance as well as thorough painting, and then removing the cause of dampness. The paint can be removed to expose the soft, rotting wood. Any rotten timber sections should be cut off and the affected area should be carefully cut or pieced with replacements made of the same type of wood as the ones that remain. This method of repair maximizes the amount of original fabric retained and is among the least invasive methods for treating timber-to-timber decay.
A resin-based wood condenser is a viable alternative to traditional process of sanding or staining. It is brushed onto the surface of the wood to protect it and stabilize it. It is particularly useful for the treatment of sash cords and pulleys which help stop breakage.
It is important that any ironmongery from the past such as sash stay and latches are retained and restored rather than replacing them. It can be difficult to replace these items without compromising their original design. It is also recommended that fittings made of aluminum like sashlifts and chainstays, are avoided since they can cause corrosion and deterioration of timber frames and sashes.
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The Advanced Guide To Sash Windows Cambridge
