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Maintaining Timber Windows

A well-maintained wooden window is an essential part of a historic building. It is a representation of the various materials and techniques as well as the craftsmanship and architectural style of the time from which it originates.

If it is possible, repairs must be made on-site. Repairing the worst areas of decay is possible using proprietary resin-based systems.

Durability

The windows made of wood in many historical buildings were built to last for a long time. They do require some maintenance to keep them looking good. The most frequently-asked maintenance tasks include repairs to sash cords and re-tightening the sash pulleys and painting. There is a growing need for upgrading timber windows to increase the efficiency of energy. This can involve replacing old glass units, repairing existing window and door repair near me rebates or putting in new cills for improved air sealing.

One of the major issues with traditional windows is damage caused by the corrosion of the paintwork. This is particularly important when it comes to sash windows, as the gaps between sashes can be quite large. In these cases water can get into paint film and cause rotting to the wood or putty beneath. Poor weather conditions can exacerbate the rotting. To avoid this, windows should be regularly painted with an exterior wood paint that is suitable.

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

The structural movement of the wall can also lead to deformations in the frame and sash. This could result in the sash fitting incorrectly jamming, sticking or sagging in the opening, and even broken glass. This can often be fixed by the fitting of new sash boxes constructed from slow-growing deal (pine) or oak. The cill must be constructed from a sturdy hardwood such as oak to prevent movement between the existing and new work.

To alleviate this issue to reduce the risk of this happening, there are several companies that make Boston pattern sash made of wood that will fit most existing openings. The sash is available in various sizes and finishes that will fit the needs of modern-day homeowners. In conjunction with quadruple draught strip and a better thermal insulation, these new sash can make significant improvements to the energy efficiency of your home.

Aesthetics

Many old timber windows have a high aesthetic value because they typically demonstrate, in a way the materials and technologies and architectural taste of the time from when they were built. They could 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 buildings, in which the majority were simply a series of openings within frames of structural construction, which were divided horizontally by mullions and vertical iron or wood bars to keep out intruders.

It is crucial to maintain the appearance of traditional timber window joinery. When you spot any signs of decay caused by moisture penetration it is essential to stop it. This is best accomplished by painting thoroughly, especially in areas that have already suffered damage or degradation. It is recommended to use paints that are designed to be used in a set (primer undercoat and finish), and to follow the manufacturer’s recommendations for preparation and number coats at each stage.

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

In the late medieval and 17th century periods glass became cheaper and more abundant, and the openings for glazed glass in timber-framed buildings gradually became sophisticated with wooden tracery, moulded mullions and deep projection cills. In recent times, glass was fixed to frames that were rebated using glazing sprigs, not lead cames. This method of double glazing near me 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 without the use of led lights.

Energy efficiency

The traditional timber windows are energy efficient because of their thickness and multilayer construction as well as focus on particulars. They also have large glass areas as well as deep projecting cills that reduce air infiltration. The windows can be modified to improve their energy efficiency through draughtproofing and secondary glazing. However it is essential to keep in mind that any such measures should be evaluated in terms of the overall appearance and integrity of the original window.

It is logical to fix or upgrade historic windows rather than replace them, particularly when improvement in thermal efficiency can be made through simple repairs. Older windows are usually of historical significance, since they demonstrate a variety in technological advancements and changes to the architectural style. The pressure to replace these windows are usually based on the assumption that windows of the past will require replacement in the near future, but most are still capable of serving for 150, 200 or even 250 years if they are properly maintained.

It is crucial to understand that decay issues with traditional timber cambridge windows and doors can be preventable by prompt and thorough repairs. It is also important to spot damp issues and address them promptly to avoid major damage. Paint deterioration that occurs early can be a problem because it allows moisture to get into the wood, causing 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 good quality paint will prevent this moisture from entering. It is also important to keep the paintwork spotless in order to prevent mould and condensation. Modern synthetic paints can be problematic since they are typically made to be water-resistant and this can lead to the formation of mildew inside the window frame.

The majority of windows from the past were made from timber that contained the majority of sapwood. These timbers can deteriorate very quickly when exposed to wet weather conditions, but they can be protected by a thorough treatment of preservative before they are put to use. It is crucial to select the right type of wood for the site and climate, as these variables can affect the durability of the joinery. Local window manufacturers offer various types of sash timbers that can be adapted to fit historical openings. They can be produced in the standard Boston pattern or in custom sizes to fit historic buildings.

Maintenance

The life span of windows made from timber can be extended significantly by regular inspection as well as a careful redecoration and timely repair. The most common reason for decay is moisture infiltration through deteriorated paint and putty. This can be avoided by using a quality wood preservative and painting the wood thoroughly.

It is crucial that repairs to old sash and casement windows are well executed and completed without causing any disturbance. Repairs can be made to many traditional timber Window Sealing designs without removing the frame. This should be done as often as is feasible. Remove peeling or loose paint and lightly sand the area to improve the "key" of the surface. This will enable the new coating to stick better. Care should be taken to avoid stripping old paint layers that may have historic value and if they are present it is recommended that a study of the paint be carried out.

If a portion of wood is decayed the best way to deal with it is to take it off and replace it with timber inserts designed to match existing profiles. The timber that is inserted should be treated using wood preservative, and the joint between the masonry sub-cill and the timber cill should be sealed.

It is tempting to replace traditional windows with PVC U, particularly when the installer offers an all-in-one installation that includes both replacement and removal in one day. It is important that the installers of replacement windows have a deep understanding of the history and construction of traditional timber frames. This will allow them to make the appropriate recommendations for energy efficiency improvements as well as other technological upgrades that won't alter the appearance of a historic building. Anyone who installs replacement windows should be registered with a Competent Persons Scheme such as FENSA. This will ensure that the replacement windows 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 particularly true where windows are situated in listed buildings and conservation areas.