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Maintaining Timber Windows

A well-maintained window made of timber is an important part of the historic structure of a building. It reflects in different levels, the materials and techniques of the time it was constructed, as well as the design and craftsmanship.

If repairs are possible to existing windows should be made in situ. Repair systems made of resin can be used to fix the most damaged areas of decay without removing the whole window maintenance.

Durability

The windows made of timber in many old buildings were built to last for a long time. They require regular maintenance to keep them looking great. Maintenance tasks include repairs to sash cords, retightening of sash pulleys and painting. There is also a rising demand for upgrading timber windows to increase energy efficiency. This can include replacing old glazing units, fixing existing window rebates or installing new cills to improve air door seal repair near me.

One of the main issues with traditional windows is the damage caused by corrosion of the paintwork. This is particularly true when sash windows are involved as the gaps between sashes can be very large. In these situations water may get through the paint film and cause rotting of the putty and the wood beneath. Poor weather conditions can exacerbate the decay. To prevent this windows, they should be regularly painted with a suitable exterior wood paint.

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

Another significant problem with older windows is structural movement in the wall, which could cause deformation of the frame and the sash. This can result in the sash not fitting properly, jamming or sticking in the opening, or breaking glass. This can be fixed frequently by fitting new frames for sash made of slow-growing deal (pine), or oak. The cill must be made of a durable hardwood, such as oak, to prevent shifting between the new and old work.

There are now several companies that produce Boston pattern wooden sash that fit into the majority of existing openings. These sash are available in a variety of sizes and finishes to suit the requirements of the modern homeowner. The new sash, coupled with quadruple draft strips and a better thermal insulation, can make a huge difference to the efficiency of your home's energy usage.

Aesthetics

Many old timber windows have a high aesthetic value because they typically demonstrate, in a way the materials and technologies and architectural style of the period from which they originate. They may also have significant historical value on their own. This is particularly true for early windows that were not glazed in timber-framed buildings, where the majority were simply a series of openings within structural frames that were subdivided horizontally by mullions with vertical wood or iron bars to protect against intruders.

It is crucial to maintain the appearance of traditional timber Childproof window repair joinery. It is vital that any decay resulting from moisture penetration should be stopped as soon as it is discovered. It is best to do this by thorough painting, especially where there is damage or degradation. It is recommended to use paints that are designed to be used in a system (primer undercoat and finish) and to adhere to the manufacturer's recommendations for preparation and number of coats at each stage.

Wet rot is a frequent issue in older timber cambridge windows. The best way to stop it growing is to eliminate sections that are damaged or rotten immediately to prevent the spread of the fungus responsible for it. Replace rotting wood with slow-grown deal (pine), and if possible, the same kind of timber as the one being removed, to prevent any differential movement.

In the late period of the 17th century and the middle of the medieval period, glass became more affordable and abundant, so that the glazed openings in timber-framed buildings gradually became elegant with wooden tracery as well as moulded mullions and protruding cills. In recent years, glazing was pinned into frames that were rebated using glazing sprigs, not 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 leaded lights.

Energy efficiency

Traditional timber windows have excellent energy efficiency due to their thickness, multi-layer construction and very meticulous attention to detail. The large glass areas, deep projecting cills, and the large glazing areas minimize air infiltration. The windows can be modified to improve their energy efficiency with draught-proofing and secondary glazing. It is essential to remember that these measures need to be taken into consideration in relation to the overall integrity and appearance of the original windows.

As a result, retaining the existing windows from the past that require repair rather than replacing them makes sense especially when their thermal enhancements can be achieved inexpensively with simple repairs and improvements. Historic windows often have a historical value that illustrates a variety of technological advances and changes in architectural taste. The pressures to replace such windows are usually based on the assumption that the windows that are old will need to be replaced in the near future, but the majority of them are in a position to last for 150, 200 and even 250 years if properly maintained.

It is crucial to understand that decay issues associated with traditional timber windows can be avoidable with quick and thorough repairs. It is also essential to recognize damp issues and address them promptly to avoid major damage. Early paint deterioration can be a problem because it allows moisture to penetrate into the wood, which can cause wet rot. This damage is often not noticed until the paintwork is cracking or wavy however, it can cause serious structural damage and can lead to further decay.

A high-quality paint will stop this moisture penetration. It is also important to keep the paintwork in good condition to avoid condensation and the growth of mould. Modern synthetic paints pose a challenge because they are often water-resistant and can cause mildew to develop within the window frame.

The majority of windows from the past were manufactured from timber containing a high proportion of sapwood. These timbers can deteriorate very quickly when exposed to moist weather, but can be protected by an extensive preservative treatment prior to when they are put to use. It is also crucial to ensure that the type of wood used is suited to the climate and site conditions, since these factors can affect the longevity of the joinery. Local window manufacturers make a range of sash made of timber that can be customized to fit specific openings from the past. They can be produced in the standard Boston pattern or in custom sizes to suit historical structures.

Maintenance

The lifespan of windows made of timber can be extended significantly through regular inspections, careful redecoration and prompt repair. The major cause of decay is the penetration of moisture through deteriorated paint and putty. This can be avoided with thorough painting and the use of an excellent wood preservative.

Repairs to sash windows that are old and frameless casement windows should be handled with care and minimal disruption. Many of the traditional designs for timber windows can be repaired without dismantling the frame, and this option should be taken whenever possible. Loose or peeling paint must be removed with care and sanded lightly to increase the key of the surface and facilitate an improved adhesion of the new coating. Care should be taken to avoid stripping old paint layers that could have historical value If these are present, it is recommended that a study of the paint be carried out.

If a piece of wood is decayed the best way to deal with it is to take it off and replace it with timber inserts shaped to match the existing profiles. The timber inserts should be treated with wood preservative and the junction between masonry sub-cills and timber cill should be sealed.

It's tempting to replace traditional windows with PVC U, particularly if the installer offers an all-in-one installation that includes both replacement and removal in a single day. It is, however, vital that the installer of replacement windows has a complete understanding of the construction and history of traditional wooden frames. This will enable them to make the appropriate recommendations for energy efficiency improvements as well as other technological upgrades that won't affect the appearance of a building that is historic. Those who provide replacement windows should be registered under a Competent Persons Scheme like as FENSA. This will ensure that the replacements are approved in accordance with Building Regulations as a suitable option. It is quite possible for a skilled and experienced carpenter to install PVC-U windows that match the the original building. This is especially relevant when windows are in listed buildings or conservation areas.