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Maintaining Timber Windows

A well-maintained wooden window is a crucial component of a historical building. It demonstrates in various degrees the materials and technologies, craftsmanship and architectural taste of the time period from which it dates.

If possible, repairs should be made in-situ. The repair system that is based on resin can be used to fix the most deteriorated areas without removing the entire window.

Durability

Timber windows were built to last hundreds of years. But, they have to be maintained to ensure they look good and functioning correctly. Maintenance tasks include repairs to sash cords and retightening sash pulleys and painting. There is also a growing demand to upgrade the timber windows to improve energy efficiency. This could include replacing old glazing units, fixing existing window rebates or installing new cills for improved air seal.

The deterioration of paintwork is a major problem with traditional windows. This is especially true when it comes to sash windows as the gaps between sashes may be quite large. In these cases, water can penetrate paint film and cause rotting of the wood or putty underneath. The rotting process can be made worse due to weather conditions that are poor. To prevent this from happening, windows must be regularly painted with an exterior wood paint.

In addition to repainting, corroded areas need to be repaired with an adhesive-based repair product. This will ensure that the greatest amount of original fabric is preserved. It is important to minimize the number of holes created in the frame to allow cable access, as these can admit moisture and cause decay.

The wall's structural movement could also cause distortions in the frame as well as sash. This could result in sash no longer fitting correctly and jamming or sticking to the opening, and damaged double glazing repairs cambridge. This can often be fixed through the installation of new sash boxes made from slow grown deal (pine) or oak. The cill must be constructed from a sturdy hardwood such as oak to prevent movement between the new and existing work.

There are now several companies that manufacture Boston pattern wooden sash to fit in with the majority of openings. They are available in a variety of sizes and finishes to suit the requirements of the modern homeowner. These new sash, when coupled with quadruple draft strips and a better thermal insulation, can make a huge difference to the efficiency of your home's energy usage.

Aesthetics

Many old timber windows have a great aesthetic value as they often illustrate, in some way the materials and techniques and architectural taste of the time in which they originate. They could also have a significant historical significance in their individual cases. This is especially true for windows that were unglazed in the early days of timber-framed structures, which were simply a series of openings in the frame that were subdivided horizontally into mullions and iron or wood bars to deter intruders.

It is essential to preserve the appearance of traditional timber ranch window repair joinery. When you spot any signs of decay due to moisture penetration, it is important to stop it. It is recommended to do this with thorough painting, especially if there is damage or degradation. It is recommended to use paints that are designed to be used in a set (primer undercoat and finish) and follow the manufacturer’s recommendations for preparation and number of coats at each stage.

The fungus that causes wet rot can quickly spread in old timber windows. To prevent this from happening, take out any damaged or rotten components as quickly as you can. The replacement of rotting wood must be done with care using slow grown deal (pine) and, whenever feasible it is the same species as which is being removed in order to prevent any movement differences between the new section and existing timbers.

Glass became more affordable and abundant in the late medieval era and into the 17th century. In the process, the openings for glazed windows on timber-framed houses were more elaborate, with moulded mullions, wooden tracery and deep cills projecting into the air. Increasingly, the glazing was laid within rebated frames and pinned in with 'glazing sprigs' rather than being inserted into lead cames. This method of double glazing repairs is not just less prone to leaks but also allows for more expansive, clearer sheets of glass to be used in windows than would otherwise be possible without the need for leaded lights.

Energy efficiency

Traditional timber windows are energy efficient because of their thickness and multilayer construction as well as care for detail. They also feature large glass areas and projection cills which reduce air infiltration. The windows can be made to improve their energy efficiency by draught-proofing and secondary glazing. It is crucial to remember that these measures need to be taken into consideration when it comes to the overall appearance and integrity of the original windows.

It makes sense to fix or upgrade windows, rather than replacing them, particularly when improvements in thermal efficiency can be made through simple fixes. Historic windows often have an historic value that illustrates a variety of technological advancement and changes in architectural tastes. The pressure to replace these windows are typically based on the assumption that windows that are old will need to be replaced in the near future, but they are capable of serving for 150, 200 or even 250 years if properly maintained.

It is crucial to recognize that the decay issues associated with traditional windows made of timber can be avoided through regular maintenance and timely repairs. In addition it is vital to identify damp penetration problems and fix them promptly to prevent serious damage. The early deterioration of paint is a particular problem, since it allows moisture penetrate the wood and cause wet rot. This type of damage is typically not evident until the paintwork becomes wavy or cracked however, it can cause serious structural damage and lead to further decay.

A quality paint will block moisture penetration. To prevent condensation and mould, it is important to keep the paintwork as clean as it can be. The use of modern synthetic paints can pose a problem since they are typically formulated to be water-resistant, and this may result in the formation of mildew inside the window frame.

The majority of older windows were manufactured from timber containing an extensive proportion of sapwood. These timbers deteriorate quickly if exposed to rain, but they can be preserved with an extensive preservation treatment prior to use. It is also crucial to ensure that the kind of wood used is suited to the climate and site conditions, as these factors will influence the durability of the joinery. Local window manufacturers make a variety of timber sash that can be adapted to fit specific openings in historic buildings. They can be produced in the standard Boston pattern or in custom sizes that can be adapted to the architectural style of historic structures.

Maintenance

Regular inspection as well as careful redecoration and quick repairs can prolong the life of timber windows. The primary reason for the decay is moisture intrusion through the deterioration of paint and putty. This can be prevented by using a quality wood preservative and thoroughly painting the wood.

It is important that repairs to the old sash and casement windows are well executed and done without causing any disturbance. It is possible to repair several traditional designs of timber windows without having to remove the frame. This should be done as often as is feasible. Remove any peeling or loose paint and lightly sand the area to improve the "key" of the surface. This will allow the new coating to stick better. It is important to avoid stripping old paint layers that could have historical value If these are present, it is recommended that a paint analysis be carried out.

If a piece of timber has become rotten the best course of action is to take out the rotten material and replace it with spliced-in inserts that are shaped to match existing profiles. The inserted wood should also be treated with wood preservative and the joint between the timber cill and the sub-cill of the masonry should be sealed.

It is tempting to replace traditional windows with PVC u, especially when the installer provides an installation that includes both removal and replacement in a single day. It is, however, essential that the person installing replacement windows has a complete knowledge of the structure and history of traditional timber frames. This will allow them to make the right suggestions for energy efficiency improvements and other technological improvements that don't affect the appearance of a historic building. Anyone who installs replacement windows should be registered under a Competent Persons Scheme such as FENSA. This will ensure that replacement windows are approved in accordance with Building Regulations as a suitable alternative. It is, of course, possible for a skilled and experienced carpenter to install PVC-U windows that are sympathetic to the style of the building originally. This is particularly true where windows are installed in listed buildings or conservation areas.