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Maintaining Timber Windows

A well-maintained wooden Sliding Doors cambridge window is an important part of a historic building. It reflects in varying degrees, the materials and technologies of the time it was constructed, the architectural style and craftsmanship.

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

Durability

The windows made of wood in many historic buildings were built to last for centuries. However, they do need to be maintained to ensure that they look good and operating correctly. Maintenance tasks include repairs to sash cables as well as tightening the pulleys for sash and painting. The need to upgrade timber windows in order to improve efficiency and energy efficiency is also increasing. This could include replacing old glazing units, fixing existing window rebates, or installing new cills to increase the air seal.

The corrosion of paintwork is a major problem with traditional windows. This is particularly true when sash windows are involved as the gaps between sashes can be quite large. In these situations water may get through the paint film and cause rotting of the putty and the wood beneath. The rotting may be further aggravated due to weather conditions that are poor. To prevent this, windows should be painted regularly using a suitable exterior wood paint.

Corroded areas should also be repaired using resin-based products. This will ensure that the maximum amount of original fabric retained. It is also necessary to reduce the number of holes you drill into the frame to allow cable entry, as they could let in water and cause decay.

The wall's structural movement could also cause distortions in the frame and sash. This could result in the sash fitting incorrectly, jamming or sticking in the opening, and even broken glass. This is often corrected by putting in new frames for sash made of slow-growing deal (pine) or oak. The cill should be constructed of a durable hardwood, like oak, to prevent shifting between the new and older work.

There are a variety of companies that make Boston pattern wooden sash that fit most existing openings. They are available in a range of sizes and finishes to suit the requirements of the modern homeowner. These sash are coupled with quadruple draft strips and a better thermal insulation, can make a significant difference to the energy-efficiency of a home.

Aesthetics

Many old wooden windows have an excellent aesthetic value because they typically demonstrate, in a way, the materials and technology and architectural taste of the period from which they date. They could have significant historical value as a set. This is particularly true of early windows that were not glazed in timber framed buildings which were just a collection of openings in the frame that were subdivided horizontally into mullions and iron or wood bars to keep out invaders.

It is essential to preserve the appearance of traditional timber window joinery. As soon as you see any signs of decay due to the penetration of moisture it is crucial to stop it. It is best to do this through thorough painting, especially if there is damage or deterioration. It is recommended to use paints specifically designed to be used part of the system (primer undercoat, finish) and to follow the manufacturer's recommendations in relation to preparation and number of coats required at each stage.

The fungus responsible for wet rot can spread quickly in old windows made of wood. To stop this from happening, take out any damaged or rotten components as quickly as you can. Replace the wood that is rotting with slow-growing deal (pine) and, when possible, the exact type of timber as the one that is being removed to prevent the possibility of differential movement.

In the late medieval and 17th century periods glass became less expensive and more abundant, so that the glazed openings in timber-framed structures gradually became more sophisticated with wooden tracery as well as moulded mullions and projecting cills. In recent years, glass was fixed into frames that were rebated with double glazing seal repairs sprigs instead of lead cames. This method of glazing is not just less prone to leaking but it also allows more expansive and clearer sheets of glass to be used in the windows than would otherwise have been possible without the need for leaded lights.

Energy efficiency

Traditional timber windows offer a good energy performance due to their thickness, multi-layer construction and very meticulous attention to detail. The large glass areas, deep projecting cills and large glazing areas help to reduce air infiltration. With secondary glazing and draughtproofing the windows can be improved to improve their energy efficiency. It is important to keep in mind that these measures must be taken into consideration when it comes to the overall integrity and look of the original windows.

It is logical to repair or upgrade existing windows that are older rather than replacing them, especially when the improvement in energy efficiency can be made by simple repairs. Historic windows are often of historical significance, since they demonstrate a variety in technological advancements and changes to the architectural style. Most people assume that these windows will have to be replaced in the near future. However, they will last for 150, 200 or even 250 years if they are maintained with proper maintenance.

It is crucial to recognize that the decay issues caused by traditional timber windows can be avoided through regular maintenance and swift repairs. It is also essential to recognize damp issues and address them promptly in order to avoid major damage. The early deterioration of paint could be a problem as it allows moisture to penetrate into the wood, causing wet rot. This damage is often not evident until the paintwork is wavy or cracked, but can cause significant structural damage and lead to further decay.

A good quality paint will prevent this moisture penetration. To avoid condensation and mould, it is important to keep the paintwork as clean as possible. The use of modern synthetic paints could be a problem because they are usually formulated to be water-resistant, and this may lead to the formation of mildew within the window frame.

The majority of older windows were made from timber that contained a high proportion of sapwood. The timbers will deteriorate rapidly if exposed to rain, but they can be protected with a thorough preservation process prior to use. It is crucial to select the right type of wood for your location and climate, as these factors will affect the durability of the joinery. Local window repair specialists manufacturers produce a variety of timber sash that can be tailored to fit specific historic openings. They can be built to the standard Boston pattern dimensions or to custom sizes that fit with the architectural style of historic buildings.

Maintenance

The life span of windows made from timber can be extended by regular inspection carefully redecoration, and timely repair. The most common cause of decay is moisture intrusion through deteriorated putty and paint. This can be avoided by using a quality wood preservative and painting the wood thoroughly.

Repairs to sash windows that are old and window repair specialists frames made of casement should be done with care and with the least amount of disruption. It is possible to fix many traditional timber window designs without having to remove the frame. This should be done whenever possible. Paint that is peeling or loose must be removed with care and sanded lightly to increase the key of the surface and allow for a better adhesion of the new coating. Care should be taken to avoid stripping paint layers that may have historic value If these are present it is recommended that a study of the paint be carried out.

If a portion of wood is decayed the best option is to remove it and replace it with timber inserts shaped to match existing profiles. The timber inserts should be treated with a wood preservative. The junction between masonry sub-cill and timber cill should be sealed.

Replacement of traditional windows with PVC-u may be an attractive option, especially when the installer offers an "all-in-one" installation that handles both removal and replacement within the span of a day. It is essential that the person installing replacement windows has a full knowledge of the construction and history of traditional wooden frames. This will enable them to make appropriate suggestions for energy efficiency improvements and other technological advancements that won't alter the appearance of an historic building. Anyone who installs replacement windows should be registered under a Competent Persons Scheme, such as FENSA. This will ensure that the replacements are approved as a suitable solution in accordance with Building Regulations. A skilled carpenter is able to install PVC-u windows that are suited to the original character of the building. This is especially true where windows are installed in listed buildings and conservation areas.