Five Things Everybody Gets Wrong Regarding Sash Windows Cambridge 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 be difficult to open and close. This is often due to moisture which can cause the timber to swell.

Box sash windows were previously operated by chains or cotton cords as well as lead weights. Modern window springs for sash windows are concealed to solve this problem.

1. Aesthetics

Unlike PVC-u windows that are made according to imperial sizes that are modular the timber sash windows are able to be restored to their original size. This allows the restoration of timber sash windows in order to comply with current energy standards and to comply with conservation area regulations. It also offers a window that is far superior to the uPVC alternatives.

Sliding sash windows were initially only found in large buildings or public buildings, however the production process became less expensive and craftsmen could produce larger frames with more glass. In the late 18th century sash windows were the dominant wooden style in a majority of British homes. Sash windows were simple to operate and allowed light to enter rooms without the need for curtains.

The first windows were made of clear glass, but in the 17th century sash windows started to become more ornamental. They began with colored glazing bars, also known as mullions. They were expensive at first, but as glass production became cheaper and more efficient, they were commonplace in many period houses.

In the 19th century, it was possible to produce large, strong glasses that did not require supporting bars. This allowed the frame to be made bigger and, in turn, gave the viewer a better view. This was a significant innovation.

The introduction of the double-hung sliding sash was a significant improvement that came about towards the end of the I920s and beginning of the I930s. This allowed both the upper and lower sash to be opened at the same time and gave improved ventilation to buildings.

Oak was used in older examples and more prestigious buildings. It is crucial to maintain the separation bead that divides the sashes. This will prevent rattles and draughts. It is also crucial that sash pulleys and idler wheels are in good condition as these assist in operating the window.

2. Energy efficiency

As larger and clearer sheets of glass became available, sash window started replacing hinged casements. They were made of plate glass, set in timber frames with rebates and secured with glazing sprigs and 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 an increase in demand for ironmongery. The most common fittings included brass pulleys (and later cast-iron) weights, sash stoppers shutter hinges, handles and shutter hinges and a variety of fasteners to secure the sashes. They were often decorated with patterns, inscriptions and patterns engraved to identify the maker.

Sash windows can be very energy-efficient with regular maintenance. But, if you don't maintain them, they can become draughty and let in cold air. Draughts can also be caused by the deterioration of paint and putty. It is possible to fix this issue by using wood-to-timber solutions.

The industry of replacement windows is based on the perception that old windows are damaged and beyond economical repair, while they can be easily maintained with a bit of care. These repairs can be expensive 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 home in a single day, saving time and avoiding the need for multiple tradesmen to coordinate. They are also available with energy-saving double-glazing to get more energy efficient ratings than those offered by traditional windows made of sash. However, upvc door repairs -glazed units cannot reproduce the proportions and section of traditional timber sashes.

3. Security

It is possible to secure windows that are traditional without compromising their style. A variety of ironmongery types can be fitted including sash chains mortice bolts and sash locks. They can be positioned in a manner that the window is able to be opened to allow ventilation and cleaning. They are usually discrete since they are made to complement sash windows. They can be utilized in conjunction with traditional sash-window catchers, which should be replaced with more robust versions (such ones with double screws) or spring-loaded levers to minimize the chance of them being opened by hammering.

Sash-window frames were typically constructed from slow-growing deal or, in more elegant homes, from oak. If the glazing bars are still intact, they should be retained. If it is possible, the cills of the timber should be replaced by timber that is compatible with. Many PVC-U firms provide a one-stop shop installation service. They can remove and replace windows throughout a home in one day, without involving other tradespeople.

4. Ventilation

Sash windows were introduced in the 17th century and allowed for a large amount of light to enter buildings. By the end of the 18th century, they were adapted to allow more light into rooms and larger glazing panes began to be made. The result was a more light appearance and windows with more elegance.

Sash windows were introduced, which required a new range ironmongery. Early pulleys could be made of wood. Later Victorian ones were made of brass or a mixture of leaded and wood. There were also different types of shutter hinges and knobs. These ironmongery elements should always be kept and cleaned to ensure that the exquisite quality of their design can be appreciated.

Timber windows require careful maintenance to keep them in good shape. Lack of regular attention may result in:

Sashes that no longer slide smoothly.

holes in the frame allow water that can cause decay and damage.

break down of the putty and allow water to penetrate, which could cause decay in the frame and cill.

In the I920s and I930s, steel casement windows increased in popularity due to their durability slim and inexpensive, and complemented the vogue for healthy living. However, research has revealed that traditional softwood sash windows are 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 replacement window industry did a lot to convince homeowners that their old windows were rotten and drafty. They were also beyond the budget for repair. Many old timber windows can be fixed and utilized for a longer period with minor repairs.

5. Maintenance

Traditional sash windows require regular maintenance and inspection. If you don't maintain your sash window, it can result in the sash cords breaking and the glazing bars deteriorating excessively. It could also cause paint and putty to become damaged. The removal of the sashes may also cause structural shifts within the frame, which causes the sash to move out of alignment and not closing properly. It is also possible for the sash be snagged or fixed in an open position and let water and draughts into the property.

The damage to timber windows is usually caused by moisture penetration. This can be prevented by regular repairs by thorough painting and eliminating the cause of dampness. Wet rot is easily identified due to the wavy appearance of the existing paint which can be removed to reveal rotting, soft timber. Any rotten sections of timber should be cut off and the affected area should be carefully cut or pieced with replacements made from the same type of timber as those remaining. This method of repair maximizes the amount of fabric that was originally used and is among the most non-invasive methods to treat wood-to-timber rot.

The use of a wood consolidant made from resin is another alternative to the traditional method of staining and sanding. It is brushed on the surface of the wood to stabilize it and protect it from further damage. It is particularly useful for treating sash and pulley cords, where it can prevent breakage.

It is essential that any ironmongery from the past like sash stays and latches be kept and restored instead of replacing them. These items can be very difficult to replace without compromising the the original design. It is also advised that modern fittings made of aluminium like sashlifts and chainstays, are avoided since they could cause corrosion and deterioration of timber frames and sashes.