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Maintaining Timber Windows

A well-maintained window made of timber is an important part of the historic structure of a building. It reflects in varying levels, the materials and techniques of the time it was constructed, the architectural style and craftsmanship.

If it is possible, repairs must be made in-situ. Repair systems made of resin can be used to fix the most damaged areas of decay without having to remove the entire window.

Durability

The windows made of timber in many historic buildings were made to last for a long time. However, they do need to be maintained to keep them looking good and operating correctly. The most common maintenance tasks include repairs to sash cords and re-tightening the sash pulleys and painting. There is a growing need to upgrade timber windows to improve energy efficiency. This may mean replacing old glass units, repairing existing window rebates or putting up new cills to allow for improved air sealing.

A key problem with traditional windows is the damage caused by the corrosion of the paintwork. This is especially important where windows made of sash are involved because the gaps between the sashes can be quite large. In these situations water can enter the paint film and cause rotting to the wood or putty underneath. The rotting process can be made worse by poor weather conditions. To prevent this, windows should be painted regularly with an exterior wood paint that is suitable.

In addition to repainting, areas that have corroded must be repaired using the help of a resin-based repair solution. This will ensure that the maximum amount of the original fabric is retained. It is also essential to limit the number of holes drilled into the frame to allow cable entry, as they could allow water in and cause decay.

The structural movement of the wall can also lead to distortions in the frame and sash. This can lead to the sash not fitting properly jamming, sticking or sagging in the opening, or breaking glass. This can be corrected often by fitting new sash frames made of slow-grown deal (pine) or oak. The cill should be constructed from a sturdy hardwood, like oak, in order to prevent any the movement of new and older work.

To reduce the risk, there are now several companies that produce Boston pattern wooden sash that can be fitted into most openings. The sash is available in various sizes and finishes that meet the requirements of modern-day homeowners. These new sash, when combined with quadruple draft strips and a better thermal insulation, can significantly improve the energy-efficiency of a home.

Aesthetics

Many old timber frames have a great aesthetic appeal, as they reflect, in some shape, the materials technology, the construction process, and the architectural style of the time they were constructed. They could have significant historical value in their own right. This is particularly true of early windows that were not double glazed door repairs in timber-framed structures, where the majority were simply a series openings in frames of structural construction, which were divided horizontally by mullions with vertical iron or wood bars to keep out invaders.

It is important to maintain the appearance of traditional timber window joinery. It is crucial that any decay caused by water penetration is immediately stopped once it is identified. This is best accomplished by applying a thorough coat of paint, particularly in areas in which there is already damage or deterioration. It is recommended to use paints specifically designed to be used as part of the system (primer, undercoat and finish) and to follow the manufacturer's recommendations regarding preparation and the number of coats needed at each stage.

Wet rot is a common problem for older timber windows. The best method to stop it from becoming a problem is to take out any damaged or rotten sections as soon as possible to prevent the spread of the fungus that causes it. The replacement of wood that is rotting should be carefully undertaken by using a slow-growing deal (pine) and, if possible using the same species as which is being removed to prevent differential movement between the new section and the existing timbers.

Glass became more affordable and abundant during the late medieval period and into the 17th century. As a result, the glazed openings in timber-framed homes became more complex with moulded mullions, wooden tracery and deep projecting cills. Increasingly, the glazing was set within rebated frames and then pinned by 'glazing sprigs' rather than into lead cames. This method of glazing is not just less prone to leaks but it can allow for larger and clearer sheets of glass to be used in the windows than would be possible without the need for lead lights.

Energy efficiency

Traditional timber windows provide excellent energy efficiency due to their thickness and multi-layer construction. They also pay attentive attention to detail. They also have large glass areas and projection cills which reduce air infiltration. The windows can be modified to increase their energy efficiency with draught-proofing and secondary glazing. However it is crucial to remember that such measures must be considered in the context of the overall appearance and integrity of the original upvc door repairs window renovation - https://cameradb.review/wiki/The_History_Of_Door_Hinge_Repair_Cambridge -.

Therefore, keeping the existing windows from the past that are in need of repair instead of replacing them makes sense, particularly when their thermal enhancements can be made inexpensively with simple repairs and improvements. Historic windows are often of historical value, as they reflect a variety of technical development and changes to architectural taste. The pressure to replace these windows are generally based on the assumption that the windows that are old will need to be replaced in the near future, but most are still capable of providing service for 150, 200 or even 250 years if they are properly maintained.

It is important to recognise that the decay issues that are caused by traditional timber windows can be avoided by thorough maintenance and timely repairs. It is also essential to identify damp problems and fix them quickly to avoid major damage. Early deterioration of paint is a major issue, because it allows moisture to penetrate the wood and cause wet rot. The damage is usually not evident until the paintwork is cracking or wavy however, it can cause serious structural damage and can lead to further decay.

A paint of good quality will stop moisture from entering the paint. It is also essential to keep the paintwork clean to avoid condensation and mould growth. Modern synthetic paints pose a problem because they are water-resistant and may cause mildew to develop within the window frame.

The majority of older windows were constructed from timber with the majority of sapwood. The timbers will deteriorate quickly when exposed to moist weather, but can be protected with a thorough treatment of preservative before they are put to use. It is essential to select the appropriate type of wood for your location and climate, as these factors can affect the durability of the joinery. Local upvc window repairs near me manufacturers provide an array of sash timbers that can be adapted to fit historical openings. They are available in the standard Boston pattern or in custom sizes to suit historic structures.

Maintenance

The lifespan of windows made of timber can be extended through regular inspections, careful redecoration and timely repair. The primary cause of wood decay is moisture penetration through deteriorated paint and putty. This can be avoided by careful painting and the use of a good quality wood preservative.

Repairs to old sash windows as well as casement window frames must be done with care and with minimal disruption. A lot of traditional wooden window designs can be repaired without removing the frame, and this method should be used whenever it is feasible. Loose or peeling paint must be removed with care and sanded lightly to increase the 'key' of the surface and allow for an easier adhesion of the new coating. It is essential to not remove old paint layers, as they may have historical significance.

If a piece of wood is rotting the best way to deal with it is to remove it and replace it with timber inserts that are shaped to match existing profiles. The timber that is inserted should be treated with wood preservative. The junction between masonry sub-cills and timber cill should be sealed.

It's tempting to replace traditional windows with PVC u, particularly when the installer provides an installation that includes both replacement and removal within a single day. It is crucial that installers of replacement windows have a thorough understanding of the history and construction of traditional timber frames. This will enable them to make the right recommendations for energy efficiency improvements as well as other technological improvements that don't harm the character of a historic building. Those who provide replacement windows must be registered under a Competent Persons Scheme such as FENSA. This will ensure the replacements are deemed to be approved under Building Regulations as a suitable option. A skilled carpenter can install PVC-u windows that are suited to the original character of the building. This is particularly true when the windows are situated within listed buildings or conservation areas.