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Maintaining Timber Windows

A well-maintained wooden window is an essential element of a building that is historic. It reflects, in various degrees, the materials and techniques of the time it was constructed, the design and craftsmanship.

If repairs are possible to existing windows are required, they should be made in situ. Repairing the most deteriorated areas of decay can be accomplished by using specialized resin-based systems.

Durability

The windows made of wood in many historical structures were designed to last for hundreds of years. They do require some maintenance to ensure they look good. The most frequently-asked maintenance tasks are repairs to sash-cords, re-tightening sash pulleys, and painting. There is also a growing demand for upgrading timber windows to increase the efficiency of energy. This may mean replacing old glazing units, fixing the window rebates that are in place or putting up new cills for improved air sealing.

A key problem with traditional windows is damage caused by the corrosion of the paintwork. This is especially important when it comes to sash windows as the gaps between sashes may be extremely large. In these circumstances water can get into the paint film and cause decay of the putty and the wood underneath. The rotting process can be made worse by poor weather conditions. To stop this from happening windows, they should be regularly painted with a suitable exterior wood paint.

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

The wall's structural movement could also cause distortions in the frame as well as the sash. This can result in sash not fitting correctly jamming, sticking or sagging in the opening, or breaking glass. Most often, this is corrected through the installation of new sash boxes that have been constructed from slow-growing deal (pine) or oak. The cill should be constructed from a sturdy hardwood such as oak to avoid any movement between the existing and new work.

To alleviate this issue to reduce the risk of this happening, there are a number of companies who manufacture Boston pattern wooden sash that will fit most existing openings. The sash is available in various sizes and finishes that meet the requirements of modern homeowners. In conjunction with quadruple draught strip and better thermal insulation these new sash can make a substantial difference to the energy efficiency of your home.

Aesthetics

A lot of old timber frames possess a dazzling aesthetic appeal because they show, in some shape, the materials, technology, and architectural aesthetics of the time they were constructed. They may also have a significant historical significance in their individual cases. This is especially true of early windows that were not glazed in timber-framed buildings, in which the majority were simply a series of openings in frames of structural construction, which were divided horizontally by mullions with vertical iron or wood bars in order to keep out invaders.

Traditional timber window repair joinery can be a highly decorative element of a structure and is essential to maintain its appearance. It is essential that any decay that results from water penetration is removed as soon as it is recognised. It is best to do this with thorough painting, particularly if there has been damage or degradation. It is recommended to use paints designed to be used in a system (primer undercoat and finish), and to follow the manufacturer's guidelines for preparation and number of coats at each stage.

Wet rot is a frequent problem in old timber windows and the best way to stop it growing is to eliminate sections that are damaged or rotten as soon as you can to prevent the spread of the fungus responsible for it. The replacement of wood that is rotting must be done with care with a slow-growing deal (pine) and, whenever feasible using the same species as which is being removed in order to prevent any movement differences between the new section and existing timbers.

Glass became less expensive and more abundant during the late medieval period and into the 17th century. As a result, the glazed openings in timber-framed homes became more complex with moulded mullions and traceries, made of wood and cills that protruded deep. In recent years, glass was fixed to frames that were rebated with glazing sprigs rather than lead cames. This method of glazing not only makes windows less likely to leak and break, but also allows wider sheets of clearer glass to be used than would have been possible without the use of led lights.

Energy efficiency

Traditional Timber double glazing repairs glazed windows cambridge (lovewiki.faith) windows have a good energy performance due to their thickness, multi-layer construction and very meticulous attention to detail. The large glass areas, the deep projecting cills, and the large glazing areas minimize air infiltration. The windows can be made to increase their energy efficiency by draught-proofing and secondary glazing. However, it is important to keep in mind that any such measures should be evaluated in relation to the overall quality and appearance of the original window.

It is logical to repair or upgrade existing windows that are older 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 technological advancements and changes to the architectural style. Many people believe that these windows will need to be replaced in the near future. However, they can still provide service for 150, 200, or even 250 years with proper maintenance.

It is essential to understand that the decay problems associated with traditional windows made of timber can be avoided by thorough maintenance and prompt repairs. It is also essential to recognize damp issues and correct them swiftly so that you can avoid serious damage. The early deterioration of paint is a major issue, as it allows moisture to penetrate the wood and cause wet rot. This damage is often not apparent until the paintwork is cracking or wavy however, it can cause serious structural damage and lead to further decay.

A good paint will block moisture penetration. It is also essential to keep the paintwork clean to avoid mould and condensation. Modern synthetic paints are problematic because they are often water-resistant, and can cause mildew to grow in the window frame.

The majority of older windows were constructed from sapwood-rich wood. These timbers are susceptible to deterioration quickly when exposed to wet weather conditions, but they can be protected with an extensive preservative treatment prior to when they are put to use. It is also crucial to ensure that the type of timber used is well-suited to the climate and site conditions, as these factors will influence the durability of the joinery. Local window manufacturers offer various types of sash timbers that can be made to fit the historic openings. They can be built to the standard Boston pattern dimensions or to specific sizes that fit with the historic architecture.

Maintenance

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

It is important that repairs to old sash or casement windows are done correctly, and carried out with minimal disruption. Repairs can be made to many traditional timber window supplier cambridge designs without having to remove the frame. This is a must whenever it is possible. Remove peeling or loose paint and lightly sand the surface to improve the "key" of the surface. This will enable the new coating to stick better. Be careful to avoid stripping paint layers that may have historic value and if they are present, it is recommended that a study of the paint be conducted.

Where a section of timber has become rotten the best course of action is to remove the rotted material and replace it with spliced-in inserts that are shaped to fit 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 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 in one day. It is important that the installers of replacement windows are aware of the history and construction of traditional timber frames. This will allow them to make appropriate recommendations for energy efficiency improvements as well as other technological improvements that don't alter the appearance of a building that is historic. Anyone who installs replacement windows must 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. It is quite possible for an experienced and skilled carpenter to install PVC-u windows that match the style of the original building. This is especially true when windows are installed in listed buildings or conservation areas.