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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have traditional sash windows and homeowners are proud of how they look. Sash windows can get stuck and become difficult to open or close. This is usually due moisture which can cause the wood 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 overcome this problem.

1. Aesthetics

In contrast to PVC-u windows, which are manufactured according to imperial sizes that are modular the timber sash windows are able to be restored to their original sizes. This lets the restoration be in line with modern energy requirements while complying with conservation area regulations. It also offers windows with a superior appearance than the uPVC alternatives.

Sliding sash windows were initially only used in large buildings or public buildings, but the production process became less expensive and craftsmen could create larger frames using more glass. At the close of the 18th century, sash windows were the most popular wooden style in 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 started to become more decorative with coloured glazing bars and moulded mullions. They were expensive at the time but as glass production became more efficient and cheaper they became a part of numerous period houses.

In the 19th century, it became possible to produce large, strong glasses that did not require support bars. This allowed the frame size to increase further and this in turn gave a better view out of the window lock Repairs. This was a very important advancement.

The introduction of the double-hung sliding sash was another important improvement that occurred in the I920s and beginning of the I930s. This allowed both the lower and upper sash to be opened simultaneously and allowed for better ventilation to buildings.

The most popular type of sash is constructed from slow grown deal (pine) however oak was used in the more prestigious buildings and in earlier examples. It is crucial to maintain the separation bead that separates the sashes. This will prevent 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.

2. Energy efficiency

Sash windows replaced hinged cases as larger and clearer sheets were made available. Plate glass was set into frames of timber that were rebated, then secured with glazing sprigs and putty was then sprayed onto the frame's sides to ensure watertightness. This type of glass gradually replaced leaded lights.

The introduction of sashes led to an need for a larger variety of ironmongery with the most basic fittings being brass pulleys and lead (and later cast iron) weights, sash stops shutter hinges, knobs and shutters as well as a range of fasteners used to keep the sashes into place. These were usually decorated with motifs, inscriptions, and engraved patterns to identify the maker.

Sash windows are energy efficient when they are maintained regularly. However, without this maintenance they can become drafty and let in cold air. Paint and putty can cause draughts. This can be fixed by using wood-to-timber repair products that are specifically designed for this purpose.

The industry of replacement windows relies heavily on the perception that old windows are beyond repair and cannot be maintained economically. However windows can be easily maintained with a bit of attention. These repairs can be costly and cause many disruptions in the home. Many homeowners opt to replace their windows using PVC-u from a large "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 supplied with 'energy-saving' double-glazing, which can achieve greater energy efficiency than are possible with traditional windows made of sash. However these double-glazed units are unable to replicate the section and proportions of historic timber sashes.

3. Security

It is possible to secure windows that are traditional without compromising on their aesthetics. Ironmongery like sash chain, mortice bolts and sash locks can be used. They can be positioned in such a way that the window mechnism repair can be opened to allow ventilation and cleaning. They are generally minimal in appearance, as they are designed to match the sash window. They can be used in conjunction with traditional sash window catches. These should be replaced with more robust models like ones that have double screws or sprung levers in order to reduce the risk of being hit with hammers.

Sash-window frames are typically made of oak or slow-grown deal. When glazing bars have survived they should be kept, and, if possible, the timber of the cill should be replaced by matching wood. Many PVC-U firms offer a one-stop shop installation service. They can take out and replace windows throughout a house in just one day, without involving any other tradespeople.

4. Ventilation

When sash windows first introduced in the 17th century, they allowed a substantial amount of light to flood into buildings. By the end of the 18th century, they were adapted to allow even more light into rooms, and larger glazing panes began to be manufactured. The result was a lighter appearance and windows that were more elegant.

Sash windows were introduced, which required a new range ironmongery. The first pulleys were made of wood, whereas later Victorian ones could be made from brass or a combination of lead and wood, and there were a variety of shutter hinges and knobs. These ironmongery pieces should be kept clean and preserved in order to appreciate their fine design.

Timber windows require regular maintenance to ensure they remain in good condition. A lack of attention to them regularly could cause:

Sashes that do not slide easily.

Holes in the frame that allow water to enter and cause damage and decay.

Water can penetrate the putty and cause decay to the frame or cause cill.

In the I920s and I930s, steel casement windows grew in popularity because they were strong slim and inexpensive and also matched the fashion for healthy living. Research has proven that softwood sash windows are just as effective as PVC-u windows, and may even be more attractive.

The replacement window and door repair near me industry has made a significant effort to convince homeowners that their windows are rotten, draughty and beyond economic repair. The reality is that many older windows made of timber are in good shape and, with minor repairs, could easily be maintained for years to come.

5. Maintenance

The traditional sash windows require regular maintenance and inspection. Failure to do this could result in sash cords breaking, excessive wear on the glazing bars and deterioration of paint and putty. The removal of sashes may also cause structural movement in the frame, which can cause the sash to not close correctly. The sash can also be stuck in its open position, allowing the water and drafts to enter the property.

Damage to timber windows is often caused by moisture penetration. This can be prevented by thorough painting, regular repairs and elimination of the source of dampness. The paint can be removed to expose the soft, decaying wood. The sections of timber that are rotten should be carefully removed and the affected area should be scarfed or glued together by using replacements of the same kind as the timber that remains. This method of repair maximizes the amount original fabric and is one of most non-invasive methods to treat the rot that occurs between timber and timber.

The use of a wood consolidant made from resin is a different option to the traditional method of sanding and staining. It is brushed on the surface of the timber to stabilise and shield it from further damage. It is particularly useful in the treatment of pulleys and sash cords which can help stop breakage.

It is essential that any historic ironmongery such as sash stay and latches are retained and rehabilitated instead of being replacing them. They can be extremely difficult to replace without compromising the the original design. It is recommended that the use of modern aluminum fittings such as chain stays and sash lifts is avoided whenever possible since they can cause corrosion and deterioration of frames and sashes made of timber.