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Maintaining Timber Windows

A well-maintained timber window is a significant part of the historic fabric of a building. It illustrates in varying degrees the various materials and techniques as well as the craftsmanship and architectural style of the period that it was built in.

Whenever possible repairs to existing windows should be made in-situ. Proprietary resin-based repair systems can be used to fix the worst areas of decay without removing the entire window.

Durability

The timber windows in many old buildings were built to last for centuries. However, they need to be maintained to keep them looking good and operating correctly. Maintenance tasks include repairs to sash cables and retightening pulleys on sash, and painting. There is also a growing demand to upgrade timber windows to improve energy efficiency. This may include replacing old glazing units, fixing the window rebates that are in place or installing new cills to improve air seal.

One of the major issues with traditional windows is the damage caused by corrosion of the paintwork. This is particularly important when windows with sash are involved since the gaps between the sashes can be extremely wide. In these situations water may get through the paint film and cause rotting of the putty and the wood beneath. The weather can be a factor in accelerating the decay. To avoid this windows from becoming rotten, they must be painted regularly with an exterior wood paint that is suitable.

In addition to repainting, corroded areas should be repaired with an adhesive-based repair product. This will ensure that the maximum amount of the original fabric is preserved. It is also necessary to limit the number of holes drilled into the frame to allow cable entry as these can allow water in and cause decay.

Another major issue with older windows is structural movement in the wall, which can cause deformation of the frame and sash. This can lead to the sash not fitting properly or sticking or jamming into the opening and broken glazing. This can be corrected often by putting in new frames for sash made of slow-grown deal (pine), or oak. The cill must be made of a strong hardwood such as oak, in order to prevent any the movement of new and old work.

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

Aesthetics

Many old timber windows and doors cambridge have a great aesthetic value since they usually show, in a particular way the materials and technologies and architectural taste of the time in which they date. They may have significant historical value in their own right. This is particularly true of early windows that were not glazed in timber-framed buildings, where the great majority were just a collection of openings within the frame, which were divided horizontally into mullions and wood or iron bars to keep out intrusions.

Traditional window joinery made of timber can be a stunning aspect of a building, and is essential to keep its appearance. As soon as you see any signs of decay caused by the penetration of moisture it is crucial to stop it. This can be done by a thorough painting process, especially in areas that have already suffered damage or degradation. It is recommended to use paints that are designed to be used as part of a system (primer undercoat, finish) and follow the manufacturer's guidelines in terms of preparation and the number of coats required at each stage.

The fungus that causes wet rot is able to spread quickly in old windows made of timber. To prevent this, remove any rotten or damaged parts as soon as you can. Replace rotting wood with slow-grown deal (pine) and, when possible, the exact kind of timber that is being removed, to avoid differential movement.

Glass became cheaper and more abundant during the late medieval period and into the 17th century. This led to the openings for glazed windows on timber-framed houses were more elaborate, with moulded mullions, wooden tracery and deep projecting cills. In recent times, glass was fixed to frames that were rebated with glazing sprigs, not lead cames. This method of glazing not only makes the windows less likely to leak, but also allows for larger sheets of glass to be used than would have been possible otherwise without the use of led lights.

Energy efficiency

The traditional timber windows are energy efficient due to their thickness and multilayer construction as well as care for particulars. They also feature large glass areas as well as deep projection cills which reduce air infiltration. The windows can be modified to increase their energy efficiency through draughtproofing and secondary glazing. However it is crucial to keep in mind that these measures should be viewed in relation to the overall integrity and appearance of the original window.

It is logical to fix or upgrade windows, Window Doctor Cambridge rather than replacing them, particularly when improvements in energy efficiency can be made through simple fixes. Older windows are usually considered to be of historical value because they demonstrate a variety in technical development and changes to architectural style. 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, however most are still capable of providing service for 150, 200 and even 250 years if they are properly maintained.

It is important to recognize that decay issues associated with traditional timber windows are preventable by quick and thorough repairs. It is also important to identify damp problems and address them promptly so that you can avoid serious damage. The early deterioration of paint is a concern because it allows moisture to get into the wood, leading to wet rot. This type of damage is typically not evident until the paintwork is cracking or wavy but it can cause severe structural damage and can lead to further decay.

A high-quality paint will prevent this moisture penetration. It is also important to keep the paintwork spotless in order to prevent mould and condensation. Modern synthetic paints pose a problem because they are often water-resistant and may cause mildew to develop within the window frame.

The majority of older windows were constructed from sapwood-rich timber. These timbers can deteriorate very quickly when exposed to wet weather, however they can be preserved with a thorough preservative treatment before they are used. It is important to choose the right type of wood for the site and the climate, since these factors will affect the durability of the joinery. Local window doctor door fitters cambridge (te.legra.Ph) manufacturers have a wide range of sash timbers that can be made to fit the historic openings. They can be built according to the standard Boston pattern dimensions or to specific dimensions that are compatible with the historic architecture.

Maintenance

Regular inspections, careful redecoration, and prompt upvc Door repairs Cambridge can extend the life of timber windows. The major cause of decay is moisture leaking through the deteriorated paint and putty. This can be avoided with thorough painting and the use of a good quality wood preservative.

Repairs to old sash windows and window frames made of casement must be done with care and minimal disruption. Repairs can be made to many traditional timber window designs without removing the frame. This is a must whenever it is possible. 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 removing old paint layers, which may have historical significance.

If a piece of wood is decayed the best option is to remove it and replace it with timber inserts that are shaped to match existing profiles. The wood that is inserted should be treated with a wood preserver, and the junction between the timber cill and the sub-cill for masonry should be sealed.

It is tempting to replace traditional windows with PVC u, especially if the installer offers an 'all-in-one' installation which includes both removal and replacement within a single day. However, it is crucial that the person who installs replacement windows has a complete understanding of the construction and history of traditional timber frames. This will allow them to make appropriate recommendations for energy-efficiency improvements and other technological improvements that don't alter the appearance of a building that is historic. Those providing replacement windows should be registered with a Competent Persons Scheme such as FENSA. This will ensure that the replacements are approved as a suitable option under Building Regulations. It is certainly possible for a skilled and experienced carpenter to install PVC-u windows that fit the character of the original building. This is especially applicable when windows are located within conservation areas or listed buildings.