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How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have sash windows that are traditional and homeowners are proud of the way they appear. However, sash windows can get stuck and be difficult to open or close. This is often due to moisture that can cause the timber to swell.

Traditionally, box sash windows utilized chains or cotton cord and lead weights to operate. Modern sash windows come with hidden springs to address 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 permits the re-installation of timber sash windows to comply with current energy standards and conform to conservation area regulations. It also offers windows that are superior to Upvc Repairs alternatives.

Sliding sash window frames were initially intended for large structures or public buildings. However, this changed when production became less expensive and craftsmen could create larger frames using greater glass. By the end of the 18th century, sash windows were the most popular wooden design in British homes. Sash windows were simple to operate and allowed light to enter rooms without the need for curtains.

Early windows were plain glass but by the 17th century sash windows were becoming more decorative, with coloured glazing bars and moulded mullions. They were expensive at the time, but as glass production became more efficient and cost-effective, they became a feature of numerous period houses.

In the 19th century, it was possible to create large, sturdy glass that didn't require supporting bars. This allowed the frame to be made larger which, in turn, provided a better view. This was an important innovation.

The introduction of the double glazing cambridge-hung sliding sash was another important improvement that was made towards the end of the I920s and at the beginning of the I930s. The double-hung sliding sash is another significant improvement that came about at the end of the I920s, and at the beginning of the I930s.

The most common kind of sash is made of slow-growing deal (pine) but oak was used in the more luxurious buildings and in earlier examples. A parting bead is used to separate the two sashes and it is important that this is maintained to prevent rattles and draughts. The idler wheels, sash pulleys and sash rollers also are crucial for the proper operation of the window.

2. Energy efficiency

Sash windows replaced hinged cases as clearer and larger sheets became 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 kind of glazing gradually superseded leaded lights.

The introduction of sashes led to the 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 and knobs and a variety of fasteners used to keep the sashes to their place. These were often decorated in designs, inscriptions, and patterns engraved to identify the maker.

Sash windows are energy-efficient with regular maintenance. If they are not maintained they could become draughty. Putty and paint can cause draughts. This can be corrected using proprietary wood-to-timber repair products.

The replacement window industry relies on the belief that old windows are damaged and beyond economical repair, but they can be easily maintained with a bit of care. These repairs can be costly and cause lots of disruption to the home. Many homeowners choose to replace their windows using PVC-u from a huge "one-stop shop" installation company. They can take down and replace all the windows in an entire house in just one day, eliminating the need to co-ordinate different tradesmen, making the whole process much faster. These windows can be fitted with 'energy-saving double-glazing to attain more energy efficient ratings than a traditional windows made of sash. These double-glazed units are not capable of resembling the proportions or section of the sashes made of timber from the past.

3. Security

Traditional windows can be made secure without compromising their style. Many types of ironmongery are available including sash chains mortice bolts, and sash locks. These can be installed in a manner that the window is able to be opened to allow ventilation and cleaning. These products are often unobtrusive as they are designed to be used in conjunction with sash windows. They can be used in conjunction with traditional sash-window catches, which must be replaced by more robust versions (such ones with double screws) or spring-loaded levers to minimize the chance of them being hammered out.

Sash-window frames are usually made of oak or slow-grown deal. If the glazing bars remain intact and are not damaged, they should be left. If feasible, the cills made of timber should be replaced with wood that is in line with. Many PVC-u firms offer a one-stop installation service. They can take out and replace windows on an entire home in one day, without involving other tradespeople.

4. Ventilation

Sash windows were introduced in the 17th Century and allowed for a huge amount of light to be absorbed into buildings. In the 18th century, they had been modified to allow more light could be let into the rooms. Larger glazing panes were also produced. The result was a lighter look and windows with more elegance.

Sash windows were introduced, which required a new type of ironmongery. Early pulleys were made from wood, later Victorian ones could be made of brass or a mixture of wood and lead, and there were many kinds of shutter hinges and knobs. These ironmongery pieces should be maintained and cleaned to appreciate their fine design.

Timber windows require regular maintenance to keep them in good shape. A lack of regular attention can result in:

Sashes that do not move easily.

holes in the frame that admit water that can 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 affordable and also matched the fashion for healthy living. Studies have shown that softwood sash window are just as effective as PVC-u windows and can even be more attractive.

The industry of replacement windows has done a great job convincing homeowners that their old windows were decayed and drafty. They were also beyond the budget for repair. Many old timber windows can be repaired and used for a long time with minor repairs.

5. Maintenance

The traditional sash windows need regular maintenance and inspection. If you do not maintain your sash window, it could cause the sash cords breaking, and the glazing bars deteriorating excessively. It could also cause paint and putty degrade. The removal of sashes may also cause structural shifts within the frame, which causes the sash to be misaligned and not closing properly. The sash could also get stuck in its open position, which allows the water and drafts to enter the building.

Damage to timber windows is often caused by water entry. This can be avoided by regular repairs, thorough painting and removing the cause of dampness. The paint can be removed to reveal the soft, rotting wood. Any rotten sections of timber should be cut out and the affected area carefully cut or pieced with replacements made of the same kind of timber as those remaining. This method of repair increases the amount of fabric used in the first place and is one of most non-invasive methods to treat the rot that occurs between timber and timber.

The use of a resin-based wood consolidant is a different option to the traditional method of sanding and staining. This is brushed onto the surface of the wood to help stabilize it and protect it from further damage. It is particularly useful for treating pulley cords and sash where it can prevent breakage.

It is essential to preserve and not replace any historical ironmongery, like sash latches and stays. It can be difficult to replace these items without altering their original design. It is also recommended that modern aluminium fittings, such as sashlifts and chainstays, be avoided as they could cause corrosion and deterioration of timber frames and sashes.