How to Restore Timber Sash Windows in Cambridge
Many homes in Cambridge have sash windows that are traditional and homeowners are proud of their appearance. However, sash windows can get stuck and be difficult to open or close. This is usually due to moisture, which can cause the wood to swell.

Traditionally, box sash windows utilized chains, cotton cords or weights made of lead to operate. Modern sash windows have hidden springs to solve this issue.
1. Aesthetics
Timber sash windows, in contrast to PVC-u windows, which are made in imperial sizes and are modular, can be restored to original dimensions. This allows the restoration of timber sash windows in order to meet current energy requirements and to comply with conservation area regulations. It also provides windows with a superior appearance than the uPVC alternatives.
Sliding windows with sash were initially only found in large buildings or public buildings, however this changed when production became cheaper and craftsmen could produce larger frames with more glass. At the close of the 18th century, sash windows were the most popular wooden design in British homes. Since they were easy to open, sash windows let light into rooms without curtains.
The early windows were made of glass that was plain, but in the 17th century sash windows started to be more decorative. They began with colored glazing bars, also known as mullions. They were expensive at the time but as glass production became more efficient and cheaper they became a part of many of the period homes.
By the 19th century it was possible to make large, sturdy glass that didn't require support bars. This allowed for the frame to be made bigger which, in turn, provided a better view. This was a significant innovation.
Another significant improvement was the introduction of the double-hung sliding windows at the end of I920s and at the beginning of I930s. This allowed both the lower and upper sash to be opened at the same time and gave improved ventilation to buildings.
The most common type of sash is constructed from slow-growing deal (pine) however oak was also used in more prestigious buildings and in some earlier examples. A parting bead is used to separate the two sashes and it is essential that it is maintained to prevent rattles and drafts. It is also essential that sash pulleys and idler wheels are kept in good working order as they help to operate the
window Seal repairs.
2. Energy efficiency
Sash windows were replaced by hinged casements as larger and clearer sheets were made available. They were coated with plate glass that was set in timber frames with rebates and then pinned with glazing sprigs, and then putty on both sides to create a watertight seal. This type of glass gradually replaced the use of leaded lights.
The introduction of sashes created an need for a wider range of ironmongery, with the most basic fittings being brass pulleys, lead (and later cast iron) weights, sash stops shutter hinges, knobs and shutters and a variety of fasteners to hold the sashes to their the right place. They were often decorated with motifs, inscriptions and engraved patterns that identified the maker.
Sash windows are energy efficient when they are maintained regularly. If they are not maintained they can get drafty. Paint and putty can cause draughts. This can be fixed by using proprietary wood-to-timber repair products.
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 to upvc doors can be costly and cause lots of disruption to the home. To prevent this homeowners, many opt for a complete replacement with PVC-u windows from one the largest "one stop shop" installation companies. They can replace all windows in a home in one day, thereby saving time and eliminating the need for multiple tradesmen to coordinate. These windows can be fitted with energy-saving' double glazing to achieve higher energy ratings than traditional windows made of sash. These double-glazed windows aren't able to replicate the proportions or section of the sashes made of timber from the past.
3. Security
It is possible to secure traditional windows without compromising on their aesthetics. Ironmongery such as mortice bolts, sash chain and sash lock could be put in place. These can be installed in a way that the
window supplier cambridge is able to be opened for ventilation or for cleaning. They are usually not noticeable since they are designed to work with sash windows. They can be used in conjunction with traditional sash-
window repair near me catchers that are required to be replaced with more robust models (such ones with
double glazing repairs cambridge screws) or sprung levers to reduce the risk of them being hammered open.
Sash-
window seal repairs near me frames are traditionally constructed from oak or slow-grown deal. If the glazing bars are intact and are not damaged, they should be left. If it is it is possible, the cills of the timber should be replaced with timber that is compatible with. Many PVC-U companies offer a one-stop shop installation service. They can take out and replace windows throughout a home in a single day, without involving any other tradespeople.
4. Ventilation
Sash windows were introduced in the 17th Century and allowed for a significant amount of light into buildings. By the end 18th century, they had been modified so that more light could be let into rooms. Larger glass panes were also produced. The result was a lighter appearance and windows that had a higher level of elegance than they had before.
Sash windows were introduced that required a brand new range ironmongery. Early pulleys were made from wood, whereas later Victorian ones could be made of brass or a combination of lead and wood and there were various types of shutter hinges and knobs. Ironmongery elements must be maintained and cleaned to ensure that the exquisite quality of their design can be appreciated.
To ensure they remain in good condition, timber windows must be maintained. Inattention to maintenance can result in:
Sashes that no longer slide smoothly.
holes in the frame that admit water, which can cause damage and decay.
The putty can be soaked by water and cause decay to the frame or cause cill.
Steel casement windows were popular in the I920s and I930s because they were strong and slim, and also because they were cheap and complemented the trend for healthy living. However, research has proven that traditional softwood sash windows are just as efficient in thermal efficiency as PVC-u double-glazed windows, and may be more appealing than the sleek lines of modern casement windows.
The window replacement industry has done a great job convincing homeowners that their old windows were rotten, drafty and beyond economical repair. The reality is that many old windows made of timber are in good shape and with minor repairs can easily be repaired for many years to be.
5. Maintenance
The traditional sash windows need regular maintenance and inspection. Inability to keep up with this could result in broken sash cords, excessive wear on the glazing bars, and deterioration of paint and putty. The removal of the sashes may also cause structural movement within the frame that causes the sash to be misaligned and unable to close correctly. The sash could also get stuck in an open position, allowing the water and drafts to enter the property.
Moisture penetration is the most common cause of damage to windows made of timber. This can be avoided by regular maintenance as well as thorough painting, and then removing 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 scarfed or glued together by using replacements of the same type as the remaining timber. This method of repair increases the amount original fabric and is among the least invasive ways to treat the rot that occurs between timber and timber.
A wood condenser made of resin is an alternative to traditional sanding or staining. This is brushed onto the surface of the wood to stabilize it and shield it from further damage. It is particularly useful for the treatment of pulleys and sash cords where it can help to prevent breakage.
It is essential that any old ironmongery like sash stays and latches be kept and restored instead of replaced. These items are difficult to replace without damaging the quality of the original design. It is also recommended that modern aluminium fittings like sashlifts, as well as chainstays, are avoided since they could cause corrosion and deterioration of timber frames and sashes.