How to Restore Timber Sash Windows in Cambridge
Many homes in Cambridge have sash windows that are traditional and homeowners are proud of how they appear. Sash windows can get stuck and be difficult to open and close. This is often due to moisture which can cause the timber to expand.
Traditionally, windows made of box sash utilised chains or cotton cord and lead weights to operate. Modern sash windows feature hidden springs to solve this issue.
1. Aesthetics
In contrast to PVC-u windows, which are made 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 in order to meet current energy requirements and comply with conservation area regulations. It also offers an option that is superior to the uPVC alternatives.
Sliding windows with sash were initially intended for large structures or public buildings. However, this changed when production became less expensive and craftsmen could create larger frames using larger glass. By the late 18th century windows made of sash were the predominant wooden design in most British homes. Because they were simple to open sash windows allowed light into rooms without curtains.
Early windows were simple glass, but by the 17th century, sash windows began to become more attractive with coloured glass bars and moulded mullions. They were costly initially, but as glass production became less expensive and more efficient, they were commonplace in many historic homes.
In the 19th century, it was possible to make large, sturdy glass that did not require supporting bars. This allowed the frame size to be increased even further, which gave a better view from the window. This was a significant advancement.
The introduction of the
double glazing seal repairs-hung sliding sash was another significant improvement that came about in the I920s and at the beginning of the I930s. This allowed both the lower and upper sash to be opened simultaneously and allowed for better ventilation to the building.
The most commonly used type of sash is made of slow-growing deal (pine) however oak was used in the more expensive buildings as well as in some earlier examples. It is important to maintain the parting bead which is used to separate the sashes. This will help prevent rattles and draughts. The sash pulleys, idler wheels and sash rollers also are crucial to the operation of the
window lock repairs.
2. Energy efficiency
Sash windows were replaced by hinged casements as clearer and larger sheets became available. They were glazed with plate glass placed within timber frames with rebates and secured with glazing sprigs and putty on both sides to create a watertight seal. This type of glazing gradually replaced the leaded light bulbs.
The introduction of sashes resulted in an need for a greater variety of ironmongery, including the most basic fittings, brass pulleys and lead (and later cast iron) weights, sash stops shutter hinges, knobs and shutters, and a range of fasteners to hold the sashes into the right place. They were often decorated with motifs, inscriptions or designs that were engraved to identify the maker.
Sash windows can be extremely energy efficient if they are maintained regularly. However, without this maintenance they can become drafty and let in cold air. Draughts can also be caused by the deterioration of putty and paint. You can fix this problem by using wood-to-timber products.
The replacement window industry relies on the belief that traditional windows are rotten and beyond repair, but they can be easily maintained with just a little care. Repairs can be expensive and cause a lot of disruption in the home. Many homeowners decide to replace their windows using PVC-u from a "one-stop shop" installation company. They can replace all windows in a home in one day, thereby saving time and eliminating the need for different tradesmen to coordinate. These windows can be equipped with energy-saving' double glazing to achieve higher energy ratings than traditional windows made of sash. However double-glazed windows cannot reproduce the proportions and section of historic timber sashes.
3. Security
Traditional windows can be made more secure without compromising their style. Ironmongery such as sash chain, mortice bolts and sash locks can be installed. They can be fitted in such a way that the window is able to be opened for ventilation and cleaning. These windows are typically discrete since they are made to complement sash windows. They can be used with traditional sash window catches. They should be replaced with more robust versions like ones that have double screws, or sprung levers in order to reduce the possibility of being struck by hammers.
Sash-window frames were constructed from slow grown deal or, in more elegant homes they were made from oak. If glazing bars have survived, they should be kept and, if possible, the timber of the cill should be replaced with identical wood. PVC-u companies often provide a one-stop shop installation service, which includes removing and replacing windows on a complete house in a day without the need to engage 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 large amount of light to be absorbed into buildings. At the end of the 18th century they were modified to let more light into rooms, and larger glazing panes began to be made. The result was a more streamlined appearance, and windows that had a higher degree of elegance than before.
Sash windows were introduced and required a new type of ironmongery. The first pulleys were made of wood, whereas later Victorian ones were made of brass or a mixture of lead and wood and there were a variety of shutter hinges and knobs. These ironmongery pieces should be maintained and cleaned to appreciate their beautiful design.
To keep them in good shape, timber windows must be maintained. Inattention to maintenance routinely could lead to:
Sashes that do not slide effortlessly.
Holes in the frame that allow water to get in and cause damage and decay.
break down of the putty and allow water to penetrate, which could lead to decay of the frame and cill.
Steel casement windows gained popularity in the I920s & I930s due to their strength and slim, and also because they were cheap and matched the trend of healthy living. Studies have shown that softwood sash window are as efficient as PVC-u windows and can even be more attractive.
The window replacement industry was able to convince homeowners that their old windows were rotten and drafty. They were also beyond the budget for repair. Many older timber windows are repairable and can be used for a long time with minor repairs.
5. Maintenance
A traditional sash window needs regular maintenance and inspection. If you don't maintain your window's sash, it could result in the sash cords breaking and the glazing bars deteriorating excessively. It can also cause paint and putty degrade. The removal of sashes could also result in structural movements within the frame, causing the sash to not close correctly. The sash could also get stuck in the open position, which allows water and draughts into the property.
Moisture penetration is the most common cause of damage to windows made of timber. This can be avoided with regular repairs by thorough painting and eliminating the cause of dampness. Wet rot can be identified by the wavy look of the paint, which can be removed to reveal soft, rotting timber. The sections of timber that are rotten must be removed with care and the affected area should be snared together or glued together using replacements of the same nature as the rest of the timber. This repair method increases the amount of fabric used in the first place and is one of least invasive ways to treat the rot that occurs between timber and timber.
A wood condenser made of resin is a viable alternative to traditional sanding or staining. This is brushed onto the surface of the timber to help stabilize it and protect it from further damage. It is particularly beneficial in the treatment of pulleys and sash cords which help stop breakage.
It is essential that any old ironmongery like sash stays and latches are kept and restored rather than replacing them. It is difficult to replace these items without compromising their original design. It is also recommended that the use of modern aluminium fittings, such as sash lifts and chain stays should be avoided if possible since they can cause corrosion and deterioration to frames and sashes made from timber.
