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Maintaining Timber Windows

A well-maintained plastic window repair made of timber is an important part of the historic fabric of a building. It is a representation of the different materials and technologies as well as the craftsmanship and architectural style of the period from which it originates.

When repairs are feasible to existing windows are required, they should be made in-situ. Repairing the worst areas of decay can be accomplished using proprietary resin-based systems.

Durability

Timber windows were made to last hundreds of years. They do require some maintenance to keep them looking great. The most common maintenance tasks are repairs to sash-cords, re-tightening sash pulleys, and painting. There is a growing need for upgrading timber windows to increase energy efficiency. This can involve replacing old double glazing seal repairs (More inspiring ideas) units, repairing existing window rebates, or installing new cills to allow for better air sealing.

The corrosion of paintwork is a major issue with traditional windows. This is especially true in the case of sash windows, as the gaps between sashes can often be very large. In these instances water can enter the paint film and cause rotting to the wood or putty underneath. The rotting can be exacerbated by weather conditions that are not ideal. To prevent this from happening, windows should be regularly painted with an exterior wood paint.

The areas that are damaged should be repaired with a resin-based product. This will ensure that the best possible amount of the original fabric is preserved. It is also important to reduce the number of holes that are drilled into the frame for cable entry as these can allow water in and cause decay.

The wall's structural movement can also lead to deformations in the frame and the sash. This could result in the sash not fitting properly or sticking or jamming into the opening and cracked glazing. Often this can be corrected through the installation of new sash boxes constructed from slow-growing deal (pine) or oak. The cill should be constructed from a sturdy hardwood such as oak to avoid any movement between the new and existing work.

There are several companies that make Boston pattern wooden sash that fit most existing openings. They are available in various sizes and finishes to fit the needs of modern-day homeowners. The new sash, coupled with quadruple draft strips and improved thermal insulation can make a significant difference to the efficiency of your home's energy usage.

Aesthetics

Many old timber frames have a great aesthetic appeal, as they display, in a certain form, the materials technology, design, and aesthetics of the time they were made. They may also have significant historical value in their in their own right. This is particularly true of early windows that were not glazed in timber-framed structures, where the majority of them were series of openings in structural frames that were subdivided horizontally by mullions and vertical iron or wood bars to protect against intruders.

It is essential to preserve the appearance of traditional timber window joinery. It is crucial that any decay caused by water penetration is stopped as soon as it is identified. It is recommended to do this with thorough painting, especially where there is damage or degradation. It is advisable to use paints that are specifically designed to be used as part of the system (primer, undercoat and finish) and to follow the manufacturer's recommendations in terms of preparation and the number of coats needed at each stage.

The fungus responsible for wet rot can quickly spread in old windows made of timber. To prevent this from happening, get rid of any damaged or rotten parts as quickly as you can. Replace rotting wood with slow-grown deal (pine), and should it be possible, the same type of wood as the one that is being removed to prevent any differential movement.

Glass became cheaper and more abundant during the late medieval period and into the 17th century. In the process, the glazed openings in timber-framed homes were more elaborate, with moulded mullions and traceries, made of wood and deep cills projecting into the air. In recent years, glazing was fixed into frames that were rebated using glazing sprigs rather than lead cames. This method of glazing not only makes the windows less likely to leak, but also allows for more clear glass sheets to be utilized than would have been feasible without the use of leaded lights.

Energy efficiency

The traditional timber windows are energy efficient due to their thickness, multilayer construction and attention to particulars. They also have large glass areas and projection cills which reduce air infiltration. The windows can be made to increase their energy efficiency with draught-proofing and secondary glazing. It is crucial to remember that these measures should be taken into consideration in relation to the overall appearance and integrity of the original windows.

So, retaining the existing windows from the past that require repair rather than replacing them is sensible, particularly when their thermal enhancements can be made economically through simple repairs and upgrades. The windows that are historic have a lot of historical significance, since they demonstrate a variety in technological advancement and changes in the architectural style. Many people believe that these windows will need to be replaced in the near future. However, many of them can still provide service for 150,200, and even 250 years if they are maintained with proper maintenance.

It is important to recognise that the decay issues caused by traditional timber windows can be prevented by regular maintenance and timely repairs. In addition it is vital to identify damp penetration problems and fix them promptly to avoid major damage. The early deterioration of paint can be a problem because it allows moisture to penetrate into the wood, which can cause wet rot. It is not uncommon for this damage to go unnoticed until the paintwork begins to crack or becomes wavier. However, it can cause structural damage and then further decay.

A quality paint will prevent moisture penetration. To prevent mould and condensation, it is important to keep the paintwork as clean as you can. Modern synthetic paints could be a problem because they are usually designed to be water-resistant and this may result in the formation of mildew within the window frame.

The majority of windows from the past were constructed from sapwood-rich wood. The timbers will deteriorate rapidly if exposed to rain, but they can be protected with a thorough preservation process prior to use. It is essential to select the appropriate type of wood for the site and climate, as these factors can affect the longevity of the joinery. Local window manufacturers produce a variety of timber sash that can be tailored to fit specific openings from the past. They can be built to the standard Boston pattern dimensions or to specific sizes that are in keeping with the historic architecture.

Maintenance

The lifespan of windows made of timber can be extended significantly by regular inspection as well as a careful redecoration and prompt repair. The most common cause of decay is moisture infiltration through deteriorated putty and paint. This can be prevented by thorough painting and the use of high-quality wood preservative.

It is important that repairs to the old sash and casement windows are properly executed and completed with the minimum disturbance. Many traditional timber window designs can be repaired without removing the frame, and this method should be followed whenever possible. Paint that is peeling or loose must be removed with care and sanded lightly to improve the "key" of the surface and facilitate an improved adhesion of the new coating. Care should be taken to avoid stripping old paint layers which may have historic value, and where these are present it is recommended that a paint analysis be conducted.

If a piece of wood has rotted, the best solution is to remove it and replace it with timber inserts shaped to match the existing profiles. The wood that is being inserted should be treated with a wood preserver and the joint between the timber cill and sub-cill of the masonry should be sealed.

It's tempting to replace traditional windows with PVC u, especially if the installer offers an installation that includes both replacement and removal in one day. It is crucial that installers of cambridge replacement windows windows have a deep understanding of the history and construction of traditional timber frames. This will enable them to make the right recommendations for energy-efficiency improvements and other technological upgrades that won't harm the character of an historic building. Window replacements should be registered with a Competent Persons Scheme like FENSA. This will ensure that the replacements are deemed acceptable by the Building Regulations as a suitable alternative. A skilled carpenter is able to install PVC-u windows that are suited to the original building's style. This is especially true when the windows are located in listed buildings or conservation areas.