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Maintaining Timber Windows

A well-maintained wooden window is an essential element of a building that is historic. It is a representation of the materials and technologies, craftsmanship and architectural taste of the time period that it was built in.

Whenever possible repairs to existing windows should be done in situ. Proprietary resin-based repair systems can be used to repair the most damaged areas of decay without removing the entire window mechnism Repair.

Durability

The timber windows in many historical buildings were made to last for a long time. They do require some maintenance to ensure they look good. Maintenance tasks include repairs to sash cords as well as tightening the pulleys for sash and painting. There is also a rising demand for upgrading timber windows to increase energy efficiency. This can involve replacing old glazing units, repairing the window rebates that are in place or putting in new cills that allow for better air sealing.

One of the major issues with traditional windows is damage caused by corrosion of the paintwork. This is especially important when it comes to sash windows as the gaps between sashes can be extremely large. In these situations, water can penetrate the paint film and cause rotting of the putty and the wood beneath. Weather conditions that are not ideal can accelerate the rotting. To stop this from happening, windows should be painted regularly using a suitable exterior wood paint.

In addition to repainting, corroded areas need to be repaired with a resin-based repair product. This will ensure that the best possible amount of the original fabric is retained. It is also necessary to limit the number of holes that are drilled into the frame to allow cable entry since these could let in water and cause decay.

The structural movement of the wall could also cause distortions in the frame as well as sash. This could result in the sash fitting incorrectly jamming, sticking or sagging in the opening, and even broken glass. Often this can be corrected by the fitting of new sash boxes that have been made from slow grown deal (pine) or oak. The cill should be constructed from a sturdy hardwood, such as oak, in order to prevent any shifting between the new and older work.

To alleviate this issue, there are now several companies that produce Boston pattern wooden sash that will fit into the majority of existing openings. The sash is available in a variety of sizes and finishes that meet the needs of today's homeowner. Combined with quadruple draught strips and better thermal insulation these new sash options can make significant improvements to the energy efficiency of a home.

Aesthetics

Many old timber windows have a great aesthetic value because they typically demonstrate, in a way, the materials and technology and architectural taste of the time from which they date. They may also have a significant historical significance in their own right. This is especially true for early windows that were not glazed in timber-framed structures, where the great majority were just a collection of openings in the frame, which were divided horizontally into mullions, and vertically into iron or wood bars to keep out intruders.

It is crucial to maintain the appearance of traditional wooden window seal replacement near me joinery. When you spot any decay caused by moisture penetration, it is important to stop it. It is recommended to do this through thorough painting, especially where there has been damage or degradation. It is recommended to use paints that are specifically designed to be used as part of the system (primer, undercoat and finish) and follow the manufacturer's instructions in relation to preparation and number of coats required at each stage.

The fungus that causes wet rot can quickly spread in old timber windows. To stop this from happening, get rid of any damaged or rotten components as soon as you can. The replacement of wood that is rotting should be done with care and by using a slow-growing deal (pine) and, wherever feasible using the same species as that which is being removed in order to prevent differential movement between the new section and existing timbers.

In the late period of the 17th century and the middle of the medieval period, glass became less expensive and more plentiful so that glazed openings in timber-framed structures gradually became more elegant with wooden tracery moulded mullions, moulded mullions, and deep protruding cills. In recent years, glazing was pinned into frames that were rebated with glazing sprigs instead of 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 employed than would be possible without the use of lead lights.

Energy efficiency

Traditional timber windows are energy efficient due to their thickness and multilayer construction as well as focus on detail. They also have large glass areas and deep projection cills which reduce air infiltration. The windows can be made to increase their energy efficiency through draughtproofing and secondary glazing. It is important to keep in mind that these measures need to be taken into consideration when it comes to the overall integrity and look of the original windows.

Therefore, keeping existing historic windows that require repair rather than replacing them is sensible, particularly when their thermal improvements can be achieved economically through simple repairs and improvements. The windows of the past often have an historic value that shows a variety of technical development and changes in architectural taste. Many people believe that the windows will need to be replaced in the near future. However, most can still provide service for 150, 200, or even 250 years if they are maintained with proper maintenance.

It is crucial to understand that decay issues associated with traditional timber windows can be avoidable with prompt and thorough repairs. It is also essential to identify damp problems and fix them quickly in order to avoid major damage. Early deterioration of paint is a particular problem, because it allows moisture to penetrate the wood and cause wet rot. The damage is usually not noticed until the paintwork becomes cracking or wavy but it can cause severe structural damage and can lead to further decay.

A high-quality paint will stop this moisture penetration. It is also necessary to keep the paintwork in good condition to avoid condensation and the growth of mould. The use of modern synthetic paints can be problematic since they are typically made to be water-resistant which can cause the growth of mildew within the window frame.

The majority of windows from the past were manufactured from timber containing the majority of sapwood. These timbers can deteriorate very quickly when exposed to wet weather, but can be protected with an extensive preservative treatment prior to when they are used. It is important to choose the appropriate type of wood for your location and climate, as these factors will affect the durability of the joinery. Local window manufacturers create a variety of timber sash that can be customized to fit specific openings from the past. They can be constructed to the standard Boston pattern dimensions, or to custom sizes that fit with the historic architecture.

Maintenance

The life of timber windows can be extended considerably through regular inspections as well as a careful redecoration and timely repair. The primary cause of decay is moisture infiltration through deteriorated paint and putty. This can be prevented by careful painting and using high-quality wood preservative.

It is essential that repairs to old sash and casement windows are properly executed, and carried out with the minimum disturbance. Many traditional timber window designs are repairable without removing the frame, and this approach should be taken whenever possible. Loose or peeling paint should be removed with care and sanded lightly to improve the key of the surface, allowing for an improved adhesion of the new coating. It is important to not remove old paint layers, which may have historical value.

When a piece of wood has begun to decay, the best option is to take out the rotten material and replace it with spliced-in timber inserts that are shaped to match existing profiles. The inserted timber should also be treated using wood preservative and the junction between masonry sub-cill and timber cill should be sealed.

It can be tempting to replace traditional windows with PVC u, especially if the installer offers an installation that includes both removal and replacement within a single day. It is, however, vital that the installer of windows replacement has a thorough understanding of the construction and history of traditional wooden frames. This will allow them to make appropriate suggestions for improvements to energy efficiency and other technical upgrades that will not harm the historical character of a building. Window replacements should be registered with a Competent Persons Scheme such as FENSA. This will ensure that the replacements are deemed acceptable in accordance with Building Regulations as a suitable option. It is quite possible for an experienced and skilled carpenter to install PVC-u windows that match the style of the building originally. This is especially true where the windows are located in listed buildings or conservation areas.