How to Restore Timber Sash Windows in Cambridge

Many homes in Cambridge have sash windows that are traditional and homeowners are proud of their appearance. Sash windows can become stuck and be difficult to open and close. This is often due to moisture which can cause the timber double glazed windows cambridge to expand.

Box sash windows were historically operated with chains or cotton cords, as well as weights made of lead. Modern sash windows feature hidden springs to solve this problem.

1. Aesthetics

Timber sash windows, unlike PVC-u windows that are made in imperial sizes, which are modular, can be restored to their original dimensions. This allows the restoration to be in line with modern energy requirements while complying with conservation areas regulations. It also offers a window that is far superior to the upvc locksmith cambridge options.

Sliding sash window frames were initially intended for large structures or public buildings. However the production became cheaper and artisans could produce larger frames with larger glass. In the late 18th century sash windows were the dominant wooden style in a majority of British properties. Because they were simple to open sash windows allowed light into rooms without the need for curtains.

The early windows were made of clear glass, but by the 17th Century sash windows started to become more ornamental. They were initially made of colored glazing bars or mullions. These were very expensive at the time, but as glass production improved and cost-effective, they were a common feature in many period houses.

In the 19th century, it was possible to make large, sturdy glasses that did not require support bars. This allowed for the frame to be made larger and, in turn, gave the viewer a better view. This was a significant advancement.

The introduction of the double-hung sliding sash was another significant improvement that came about in the I920s and the beginning of the I930s. This allowed both the upper and lower sash to be opened simultaneously and gave improved ventilation to the building.

Oak was used for older examples and for more prestigious buildings. A split bead divides the two sashes and it is essential that it is maintained in order to avoid rattles and draughts. The sash pulleys, idler wheels and sash rollers also are vital for the proper operation of the window.

2. Energy efficiency

Sash windows replaced hinged casements as larger and clearer sheets became 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 two sides for watertightness. This form of glazing gradually replaced leaded lights.

Sashes were introduced, which led to an increase in demand for ironmongery. The basic fittings included brass pulleys (and later cast-iron) weights, sash stoppers shutter hinges and handles, and various fasteners used to secure the sashes. These were often decorated with motifs, inscriptions, and engravings that identified the maker.

sash window Repair cambridge windows can be extremely energy efficient if they are maintained regularly. However, if they are not maintained, they can become draughty and let in cold air. Paint and putty may cause draughts too. 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 assumption that old windows are damaged and beyond economical repair, whereas they can be easily maintained with a little attention. These upvc repairs can be costly and cause many disruptions in the home. Many homeowners decide to replace their windows with PVC-u from a large "one-stop shop" installation company. They can replace and remove all the windows in a house in a single day, avoiding the need to coordinate multiple tradesmen, making the whole process much faster. They can also be fitted with energy-saving double-glazing to get higher energy efficiency ratings than are possible with traditional sash windows. Double-glazed windows aren't capable of replicating the proportions and section of sashes from old timber.

3. Security

It is possible to secure traditional windows without compromising on their aesthetics. Ironmongery like mortice bolts, sash chain and sash locks can be installed. They can be positioned in such a way that the window can still be opened for ventilation and cleaning. These are typically unobtrusive, as they are designed to fit the sash window. They can be used in conjunction with traditional sash-window catchers and must be replaced by more robust versions (such ones that have double screws) or spring-loaded levers to minimize the possibility of them being opened by hammering.

Sash-window frames were traditionally constructed from slow-growing deal or, in more prestigious houses made of oak. When glazing bars have survived they should be kept, and where feasible, the wood of the cill should be replaced with identical wood. PVC-u companies typically offer a one stop shop installation service that can remove and replacing windows on a complete home in one day, without the need to involve other tradespeople or coordinate visits from different suppliers.

4. Ventilation

When sash windows were first introduced in the 17th century they allowed a large amount of light to flood into buildings. By the end 18th century, they were adapted so that even more light could be let into rooms. Larger glazing panes were also made. The result was a lighter appearance, and windows with a greater quality of design than before.

The introduction of sash windows also demanded the creation of a new line of ironmongery. Early pulleys were of wood, whereas later Victorian ones were made from brass or a combination of lead and wood and there were various types of shutter hinges and knobs. These ironmongery pieces must be cleaned and preserved to appreciate their fine design.

To ensure they remain in good condition, timber windows need to be maintained. Lack of regular attention may lead to:

sashes that no longer slide easily.

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

break down of putty allowing water penetration that could cause decay in the frame and cill.

In the I920s and I930s steel casement windows increased in popularity due to their strength, slim and cheap and also matched the fashion for healthy living. However, research has proven that traditional softwood sash windows are as thermally efficient as double-glazed PVC-u windows and can be more attractive than the modern sleek design of casement windows.

The window replacement industry has done a lot to convince homeowners that their windows are old, dirty, and beyond economic repair. Many old timber windows can be fixed and used for many more years with minor repairs.

5. Maintenance

A traditional sash window needs regular maintenance and inspection. Failure to do this can result in sash cords breaking, excessive wear on the glazing bars, and the deterioration of putty and paint. The removal of sashes can also result in structural movements within the frame, which can cause the sash to not close properly. It is also possible for the sash to be stuck or slammed into an open position, which can let water and draughts in the property.

Damage to windows made of timber is often caused by water penetration. This can be prevented with careful painting, regular repairs and the elimination of the cause of dampness. The paint can be removed to expose the soft, rotting wood. The rotten timber sections should be carefully removed and the affected area should be scarfed or pieced together with replacements of the exact kind as the timber that remains. This method of repair increases the amount of original fabric that is left and is among the least invasive ways of treating timber-to-timber decay.

The use of a resin-based wood consolidant is a different option to traditional sanding and staining. The product is brushed on the surface of the wood to protect it and stabilise it. It is particularly useful for the treatment of pulley cords and sash, which can stop breakage.

It is crucial that any old ironmongery such as sash stay and latches are kept and restored rather than replaced. They can be extremely difficult to replace without compromising the the original design. It is also recommended that the use of modern aluminium fittings like sash lifts and chain stays is avoided whenever possible since they can cause corrosion and damage to timber frames and sashes.