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 are difficult to open or close. This is often due moisture which can cause the timber to expand.
Box sash windows were previously operated with chains or cotton cords, as well as lead weights. Modern sash windows have hidden springs to address this issue.
1. Aesthetics
Timber sash windows, unlike PVC-u windows which are manufactured in imperial sizes that are modular, are able to be restored to their original dimensions. This allows the restoration to meet modern day energy requirements while ensuring compliance with conservation areas regulations. It also offers an option that is superior to uPVC options.
Sliding sash windows were originally only used in large buildings or public buildings, though this changed as production became cheaper and craftsmen could produce larger frames with more glass. In the 18th century, Sash windows were the most popular wooden style in a majority of British properties. Because they were simple 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 the sash windows began to become more ornamental. They started with coloured glazing bars, also known as mullions. These windows were quite expensive at the time, but as glass production improved and less expensive, they became a part of many period houses.
By the 19th century it was possible to make large, sturdy glass that did not require supporting bars. This allowed the frame size to be enlarged further, which allowed for a wider view from the window. This was a significant improvement.
The introduction of the double glazing repairs near me-hung sliding sash was another important improvement that occurred at the end of the I920s and beginning of the I930s. The double-hung sliding sash was a significant improvement that came about at the end of the I920s and beginning of the I930s.
Oak was used for older examples and for more prestigious buildings. A parting bead separates the two sashes, and it is vital that it is maintained in order to avoid rattles and draughts. It is also crucial that sash pulleys and idler wheels are kept in good shape as they assist in operating the window supplier cambridge.
2. Energy efficiency
As larger and clearer sheets of glass became available, sash window started replacing hinged casements. They were glazed with plate glass placed within timber frames with rebates and then pinned with glazing sprigs and putty on both sides to ensure they were watertight. This kind of glazing gradually replaced the use of leaded lights.
The introduction of sashes resulted in a need for a much wider range of ironmongery, with the basic fittings being brass pulleys and lead (and later cast iron) weights, sash stoppers shutter hinges and knobs and a variety of fasteners used to keep the sashes to their the right place. These were often decorated in motifs, inscriptions, and engravings to identify the maker.
With regular maintenance, sash windows are very energy efficient. However, without this maintenance they can become draughty and let in cold air. Paint and putty can also cause draughts. This can be fixed by making use of wood-to-timber repair tools that are proprietary.
The industry of replacement windows is based on the belief that traditional windows are rotten and beyond repair, but they are able to be maintained with just a little care. However, these repairs are costly and can cause substantial disruption to the home. Many homeowners decide 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 avoiding the need for multiple tradesmen to coordinate. They can also be supplied with 'energy saving' double-glazing, which can achieve higher energy efficiency ratings than traditional sash windows. These double-glazed windows aren't capable of replicating the proportions and section of the sashes made of timber from the past.
3. Security
Traditional windows can be made more secure without compromising their aesthetics. There are many types of ironmongery that can be fitted, including sash chains, mortice bolts and locks for sash. These can be installed to ensure that the window is able to be opened to allow ventilation or for cleaning. These products are usually unobtrusive, as they are designed to match the sash window. They can be used alongside traditional sash-window maintenance catchers and must be replaced by more robust versions (such ones with double screws) or sprung levers to reduce the chance of them being hammered open.
Sash-window seal replacement near me frames are traditionally made from oak or slow-grown deal. If the glazing bars are still in good condition, they should be retained. If it is it is possible, the cills of the timber should be replaced with timber that is compatible with. Many PVC-u firms offer a one-stop installation service. They can take down and replace windows on an entire 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 large amount of light to enter buildings. At the end of the 18th century, they were modified so that more light could be let into the rooms. Larger glass panes were also produced. The result was a lighter appearance and windows with more elegance.
The introduction of sash windows also required a new range of ironmongery. Early pulleys were constructed out of wood. Later Victorian ones were made of brass or a combination of wood and leaded. There were also a variety of types of shutter hinges and knobs. The ironmongery pieces need to be cleaned and preserved to appreciate their beautiful design.
Timber windows require careful maintenance to ensure they remain in good order. A lack of regular attention can lead to:
Sashes that do not slide easily.
Holes in the frame that allow water to enter and cause decay and damage.
Water can penetrate the putty and cause decay to the frame or the cill.
In the I920s and the I930s steel casement windows gained popularity because they were strong, slim and cheap, and complemented the vogue for healthy living. However, research has proven that traditional softwood sash windows are as efficient thermally 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 lot to convince homeowners that their old windows are old, dirty, and beyond economic repair. Many older timber windows are repairable and can be used for many more years with minor repairs.
5. Maintenance
The traditional sash windows require regular maintenance and inspection. If you do not maintain your sash window, it can result in the sash cords breaking and the glazing bars wearing out excessively. It can also cause paint and putty deteriorate. The removal of sashes can also result in structural movements within the frame, which can cause the sash not to close correctly. It is also possible for the sash be stuck or fixed in the open position and let water and draughts in the structure.
Damage to timber windows is often caused by moisture entry. This can be prevented by thorough painting, periodic repairs and elimination of the source of dampness. The paint can be removed to reveal the soft, rotting wood. The sections of timber that are rotten should be carefully removed and the affected part should be snared together or glued together by using replacements of the same kind as the timber that remains. This repair method increases the amount original fabric and is one of most non-invasive methods to treat timber-to-timber rot.
A resin-based wood condenser is a viable alternative to traditional sanding or staining. The product is brushed on to the surface of the timber to help stabilize it and shield it from further damage. It is particularly useful for the treatment of sash cords and pulleys where it can help to prevent the breakage.
It is important to restore and not replace any historical ironmongery, such as sash latches and stays. It is difficult to replace these items without altering their original design. It is recommended that the use of modern aluminium fittings such as sash lifts and chain stays is avoided if at all possible as they can cause corrosion and deterioration of frames and sashes made from timber.(Image: https://www.repairmywindowsanddoors.co.uk/wp-content/uploads/2018/12/Replacement-Doors-300x200.jpg)
