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10 Things People Hate About Sash Windows Cambridge
How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have sash windows with traditional designs and homeowners are proud of the way they look. However, sash windows may get stuck and be difficult to open or close. This is usually due to moisture, which can cause the timber to swell.

Box sash windows were traditionally operated with chains, cotton cords and 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, can be reconstructed to their original size. This permits the re-installation of timber sash windows in order to meet the current energy requirements and to comply with conservation regulations for areas. It also offers windows that are superior to the uPVC options.

Sliding sash windows were originally only used in large structures or public buildings, but this changed when production was less expensive and craftsmen were able to create larger frames using more glass. By the end of the 18th century, sash windows had become the most popular wooden design in British homes. Sash windows were simple to operate and let light into rooms without the need for curtains.

The early windows were made of plain glass, but by the 17th Century sash windows started to become more attractive. They were initially made of colored glazing bars, also known as mullions. They were expensive at the time but as glass production became more efficient and less expensive, they were a common feature in many of the period homes.

In the 19th century, it became possible to create large, sturdy glasses that didn't require support bars. This allowed for the frame to be enlarged which, in turn, provided a better view. This was an important innovation.

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

The most popular type of sash is made from slow-growing deal (pine) however oak was also used in more prestigious buildings and in some earlier examples. It is crucial to maintain the parting bead that separates the sashes. This will help prevent draughts and rattles. The idler wheels, sash pulleys and sash rollers are also essential to the functioning of the window.

2. Energy efficiency

As larger and clearer glass sheets were made available, sash windows began replacing hinged casements. Glass plates were set in frames made of timber, which were which were pinned with glazing sprigs, and putty was applied to both sides of the frame for watertightness. This form of glass gradually replaced led lights.

The introduction of sashes created a need for a much wider range of ironmongery, including the most basic fittings, brass pulleys as well as lead (and later cast iron) weights, sash stops shutter hinges and knobs and a variety of fasteners to hold the sashes in the right place. They were often decorated with motifs, inscriptions or engraved patterns that identified the maker.

Sash windows can be extremely energy efficient if they are maintained regularly. However, if they are not maintained, they may become drafty and let in cold air. Draughts can also be caused by the breakdown of putty and paint. This can be fixed by using wood-to-timber repair products that are specifically designed for this purpose.

The market for replacement windows rests on the belief that traditional windows are rotten and beyond economical repair, whereas they are able to be maintained with a little attention. However, these repairs can be costly and cause significant disruption to your home. To prevent this, many homeowners prefer to replace their windows with PVC-u windows from one the large "one-stop shop" installation companies. They can take down and replace all windows in an entire house in just one day, eliminating the need to coordinate multiple tradesmen, making the whole process much quicker. These windows can be equipped with energy-saving double glazing to get higher energy ratings than traditional windows with sash. Double-glazed windows aren't capable of replicating the proportions or section of historic timber sashes.

3. Security

It is possible to secure traditional windows without compromising their appearance. Many types of ironmongery can be installed, including sash chains, mortice bolts and locks for sash. They can be fitted in a way so that the window can still be opened for ventilation and cleaning. They are usually unobtrusive as they are designed to be used in conjunction with sash windows. They can be used in conjunction with traditional sash window catch. These should be replaced by more robust versions like ones that have double screws or spring levers, to minimize the risk of being hammered.

Sash-window frames were typically constructed from slow-growing deal or, in more luxurious homes, from oak. If the glazing bars remain in good condition and in good condition, they should be kept. Where it is possible, the cills of the timber should be replaced by timber that is compatible with. PVC-u companies typically provide a one-stop shop installation service that can remove and replacing windows across a house in a day without the need to engage other tradespeople or co-ordinate various visits from a number of different suppliers.

4. Ventilation

Sash windows were introduced in the 17th century and allowed for a huge amount of light to be absorbed into buildings. By the end of the 18th century they were adapted to allow even more light into rooms, and bigger glazing panes started to be produced. The result was a much more streamlined appearance, and windows with a greater degree of elegance than before.

The introduction of sash windows also demanded the creation of a new line of ironmongery. The first pulleys were made of wood, later Victorian ones were made of brass or a combination of lead and wood and there were many kinds of shutter hinges and knobs. Ironmongery elements must be retained and cleaned down to ensure that the exquisite quality of their design can be appreciated.

To ensure they remain in good condition, timber windows require regular maintenance. Inattention to maintenance could lead to:

Sashes that do not slide 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.

Steel casement windows became popular in the I920s & I930s because they were sturdy 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 are more attractive than the sleek lines of contemporary casement windows.

The window replacement industry has made a significant effort to persuade house owners that their traditional windows are rotten, draughty and beyond repair. Many old timber windows are repairable and can be used for many more years with minor repairs.

5. Maintenance

A traditional sash window needs regular maintenance and inspection. If you do not maintain your sash window, it could lead to the sash cords breaking and the glazing bars deteriorating excessively. double glazing repairs cambridge can also cause paint and putty deteriorate. The removal of sashes can also result in structural movements within the frame, causing the sash not to close properly. It is also possible for the sash to be snagged or slammed into an open position and let water and draughts enter the structure.

Moisture penetration is a common cause of damage to timber windows. This can be prevented with thorough painting, regular repairs, and removing the source of dampness. The paint can be removed to expose the soft, rotting wood. The rotten timber sections should be carefully removed and the affected part should be scarfed or pieced together by using replacements of the same nature as the rest of the timber. This method of repair maximizes the amount of original fabric retained and is one of the least invasive methods for treating timber-to-timber decay.


The use of a resin-based wood consolidant is an alternative to traditional sanding and staining. It is brushed onto the surface of the wood to protect it and stabilize it. It is especially useful for treating pulley cords and sash where it can prevent breakage.

It is crucial that any old ironmongery like sash stays and latches are retained and rehabilitated instead of being replacing them. These items are difficult to replace without compromising the quality of the original design. It is also recommended that the use of modern aluminium fittings like chain stays and sash lifts should be avoided if possible as they can cause corrosion and deterioration to timber frames and sashes.

Homepage: https://www.repairmywindowsanddoors.co.uk/cambridge-windowrepair/