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Maintaining Timber Windows

A well-maintained wooden window mechnism repair is a crucial element of a building that is historic. It illustrates in varying degrees the different materials and technologies, craftsmanship and architectural taste of the time period from which it dates.

If it is possible, repairs must be made on-site. Repair systems made of resin can be used to repair the worst areas of decay without having to remove the entire Upvc Window renovation.

Durability

Timber windows were designed to last for hundreds of years. They do require some maintenance to keep them looking good. The most frequently-asked maintenance tasks are repairs to sash-cords, re-tightening sash pulleys, and painting. The demand for upgrading timber windows in order to increase efficiency in energy use is also growing. This may mean replacing old glass units, fixing existing window rebates, or installing new cills for better air sealing.

A key problem with traditional windows is damage caused by corrosion of the paintwork. This is especially important when sash windows are concerned as the gaps between sashes can often be very large. In these situations, water can penetrate paint film and cause rotting of the wood or putty underneath. Weather conditions that are not ideal can accelerate the decay. To stop this from happening, windows must be regularly painted with an exterior wood paint.

The areas that are damaged should be repaired using resin-based products. This will ensure that the greatest amount of original fabric retained. It is crucial to reduce the number of holes made into the frame in order to allow cable access, since they can let in moisture and cause decay.

Another significant problem with older windows is the structural movement within the wall, which can cause deformation of the frame and sash. This could result in the sash fitting incorrectly and jamming or sticking into the opening, and even broken glass. This can often be fixed by fitting new sash boxes that have been constructed from slow-growing deal (pine) or oak. The cill must be constructed from durable hardwood such as oak to prevent movement between the existing and new work.

There are now several companies that produce Boston pattern wooden sash that fit into the majority of existing openings. They are available in a range of sizes and finishes to meet the requirements of the modern homeowner. The new sash, combined with quadruple draft strips and a more efficient thermal insulation, could make a significant difference to the efficiency of a home's energy use.

Aesthetics

Many old timber frames have a great aesthetic appeal because they reflect, in some shape, the materials technology, the construction process, and the architectural style of the time they were made. They may have significant historical value on their own. This is especially true of windows that were unglazed in the early days of timber framed buildings which were simply a series of openings within the frame that were subdivided horizontally into mullions and vertical iron or wood bars to deter intruders.

It is crucial to maintain the appearance of traditional timber window joinery. It is crucial that any decay resulting from moisture penetration should be removed as soon as it is identified. This can be done by applying a thorough coat of paint, particularly in areas where there has already been damage or degradation. It is recommended to use paints that are designed to be used as part of the system (primer, undercoat and finish) and follow the manufacturer's instructions regarding preparation and number of coats needed at each stage.

Wet rot is a common issue in old timber windows and the best method to stop it from becoming a problem is to take out any damaged or rotten parts as soon as possible to prevent the spread of the fungus that causes it. Replace the wood that is rotting with slow-growing deal (pine), and should it be possible, the same type of timber that is being removed, to prevent any 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 buildings gradually became more sophisticated with wooden tracery, moulded mullions and deep projecting cills. In recent times, glass was pinned into rebated frames with glazing sprigs, not lead cames. This method of glazing is not only less prone to leaking but it can allow for more expansive, clearer sheets of glass to be used in the windows than would have been possible without the need for lead lights.

Energy efficiency

Traditional timber windows provide a good energy performance due to their thickness and multi-layer construction, as well as attentive attention to detail. The large glass areas, deep projection cills and wide glazing areas reduce air infiltration. The windows can be modified to increase their energy efficiency by draught-proofing and secondary glazing. It is important to keep in mind that these measures need to be taken into consideration in relation to the overall appearance and integrity of the original windows.

Therefore, keeping the existing windows from the past that are in need of repair instead of replacing them is sensible especially when their thermal enhancements can be achieved economically through simple repairs and upgrades. Older windows are usually of historical value, as they demonstrate a variety in technical development and changes to architectural taste. The pressure to replace these windows are typically based on the assumption that old windows will need replacement in the near future, but most are still capable of providing service for 150, 200 or even 250 years if properly maintained.

It is crucial to recognize that the decay problems caused by traditional timber cambridge windows and doors can be prevented through regular maintenance and timely repairs. Additionally it is crucial to recognize damp penetration issues and address them swiftly to prevent serious damage. Paint deterioration that occurs early could be a problem as it allows moisture to penetrate into the wood, leading to wet rot. This damage is often not apparent until the paintwork is wavy or cracked, but can cause significant structural damage, and could lead to further decay.

A good paint will block moisture penetration. It is also necessary 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 growth within the window frame.

The majority of older windows were constructed from sapwood-rich timber. The timbers will deteriorate quickly when exposed to wet weather conditions, but they can be preserved with an extensive preservative treatment prior to when they are used. It is essential to select the appropriate type of wood for your location and climate, as these factors can affect the longevity of the joinery. Local window mechnism repair manufacturers have a wide range of sash made from timber that can be customized to fit historic openings. They can be constructed according to the standard Boston pattern dimensions or to specific sizes that are in keeping with the architectural style of historic buildings.

Maintenance

Regular inspection as well as careful redecoration and prompt repairs can extend the lifespan of windows made of timber. The main cause of decay is the infiltration of moisture through deteriorated putty and paint. This can be prevented by using a quality wood preservative and painting the wood thoroughly.

It is crucial that repairs to the old sash and aluminium casement windows cambridge windows are done correctly and done with the minimum disturbance. Repairs can be made to the majority of traditional wooden window designs without taking the frame off. This is a must whenever it is possible. Remove loose or peeling paint and lightly sand the area to improve the "key" of the surface. This will enable the new coating to adhere better. It is important to avoid stripping old paint layers that might have historical significance, and where these are present, it is recommended that a study of the paint be carried out.

If a piece of timber has begun to decay, the best way to proceed is to remove the rotted material and replace it with spliced-in timber inserts that are shaped to fit the existing profiles. The timber inserts should be treated using wood preservative, and the joint between masonry sub-cills and timber cill should be sealed.

Replacement of traditional windows using PVC-u may be a tempting option, especially when the installer provides an "all-in-one" installation service that can handle removal and replacement within a day. It is essential that installers of replacement windows have a deep understanding of the history and design of traditional timber 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. Those who provide replacement windows must be registered under a Competent Persons Scheme such as FENSA. This will ensure that the replacements are deemed acceptable by the Building Regulations as a suitable option. 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 the windows are located in listed buildings and conservation areas.