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Maintaining Timber WindowsA well-maintained timber window is an important part of the historic fabric of a building. It reflects, in various degree the materials and technologies of the time it was constructed, as well as the architectural style and craftsmanship.When repairs are feasible to windows that are already in use should be done in-situ. Repair systems made of resin can be used to repair the worst areas of decay without having to remove the entire window.DurabilityThe windows made of wood in many historic structures were designed to last for a long time. They do require some maintenance to keep them looking good. Maintenance tasks include repairs to sash cords and retightening sash pulleys and painting. There is also a growing demand for upgrading timber windows to increase the efficiency of energy. This may include replacing old glazing units, repairing existing window rebates or installing new cills to improve air seal.The corrosion of paintwork is a major issue with traditional windows. This is particularly important when it comes to sash windows, as the gaps between sashes can be very large. In these instances water can enter the paint film and cause rotting of the wood or putty underneath. The rotting may be further aggravated by poor weather conditions. To stop this from happening windows from becoming rotten, they must be painted regularly with a suitable exterior wood paint.In addition to repainting, corroded areas must be repaired using an adhesive-based repair product. This will ensure that the maximum possible amount of the original fabric is retained. It is crucial to reduce the number of holes drilled in the frame to allow cable entry because they could let in moisture and cause decay.Another significant problem with older windows is structural movement in the wall, which can cause deformation of the frame and the sash. This can lead to sash no longer fitting correctly or sticking or jamming into the opening, and damaged glazing. This is often corrected by fitting new sash frames constructed of slow-grown deal (pine), or oak. The cill must be constructed of a durable hardwood like oak to avoid differential movement between the new and existing work.There are now several companies that make Boston pattern wooden sash that fit in with the majority of openings. These sash come in various sizes and finishes to fit the needs of modern-day homeowners. In conjunction with quadruple draught strip and a better thermal insulation, these sashes can make a significant improvements to the energy efficiency of your home.AestheticsMany old wooden windows have an excellent aesthetic value since they usually demonstrate, in a way the materials and techniques and architectural taste of the period from when they were built. They may have significant historical significance as a set. This is particularly true of early unglazed windows in timber-framed buildings, where the majority were simply a series of openings in structural frames that were subdivided horizontally by mullions with vertical iron or wood bars to keep out intruders.It is essential to preserve the appearance of traditional wooden window joinery. As soon as you see any decay caused by water penetration it is crucial to stop it. It is recommended to do this with thorough painting, particularly if there is damage or deterioration. It is recommended to use paints designed to be used in a set (primer undercoat and finish), and to follow the manufacturer's guidelines for preparation and number of coats at each stage.Wet rot is a typical issue in old timber windows. The best way to stop it developing is to remove any damaged or rotten parts as soon as possible to prevent the spread of the fungus that causes it. The replacement of rotting timber should be carefully undertaken using slow grown deal (pine) and, if possible, the same species as that which is being removed to prevent shifting between the new section and existing timbers.In the late period of the 17th century and the middle of the medieval period, glass became more affordable and abundant, and the openings for glazed glass in timber-framed buildings gradually became more sophisticated, with tracery made of wood, moulded mullions and deep projecting cills. The glazing was increasingly set within rebated frames and then pinned with 'glazing sprigs' rather than being inserted into lead cames. This method of glazing is not just less susceptible to leaks, but it also allows larger, clearer sheets of glass to be used in windows than would otherwise be possible without the need for leaded lights.Energy efficiencyTraditional timber windows are energy efficient because of their thickness and multilayer construction, as well as their care for detail. They also feature large glass areas and projecting cills that minimise air infiltration. The windows can be modified to increase their energy efficiency by draught-proofing and secondary glazing. However it is essential to keep in mind that these measures must be considered in the context of the overall appearance and integrity of the window in its original form.As a result, retaining old windows that require repair rather than replacing them is logical, particularly when their thermal enhancements can be made inexpensively with simple repairs and improvements. Historic windows are often of historical value, as they demonstrate a variety in technical development and changes to architectural taste. window seal repairs repairmywindowsanddoors.co.uk assume that the windows will need to be replaced in the near future. However, most will last for 150, 200 or even 250 years if they are maintained with proper maintenance.It is essential to understand that the decay issues that are that are typical of timber windows can be prevented by regular maintenance and timely repairs. Additionally, it is essential to recognize damp penetration issues and address them swiftly to avoid major damage. Paint deterioration that occurs early can be a problem because it allows moisture to get into the wood, leading to wet rot. This damage is often not evident until the paintwork is damaged or wavy but it can cause severe structural damage and can lead to further decay.A good paint will stop moisture from entering the paint. To avoid condensation and mould it is essential to keep the paintwork as clean as possible. Modern synthetic paints pose a problem because they are water-resistant, and can cause mildew to develop in the window frame.The majority of older windows were constructed from timber with an extensive proportion of sapwood. These timbers can deteriorate quickly when exposed to rain, however they can be protected by a thorough preservation process prior to use. It is also essential to ensure that the kind of wood used is suited to the site and climate conditions, as these factors can affect the longevity of the joinery. Local window manufacturers produce a variety of timber sash that can be adapted to fit specific historic openings. They can be made according to the standard Boston pattern dimensions or to custom sizes that fit with historic buildings.MaintenanceThe lifespan of windows made of timber can be extended considerably through regular inspections as well as a careful redecoration and prompt repair. The main reason for the decay is moisture intrusion through deteriorated paint and putty. This can be prevented by careful painting and the use of a good quality wood preservative.Repairs to old sash windows and frameless casement windows should be done with care and with the least amount of disruption. It is possible to repair several traditional designs of timber windows without having to remove the frame. This is a must whenever it is possible. Remove peeling or loose paint and then lightly sand the surface 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 paint analysis be carried out.If a piece of timber has become rotten the best option is to eliminate the rotten material and replace it with spliced-in inserts that are shaped to match the existing profiles. The inserted wood should also be treated with a wood preservative and the joint between the timber cill and sub-cill for masonry should be sealed.Replacement of traditional windows using PVC-u can be an attractive option, especially when the installer provides an "all-in-one" installation service that can handle removal and replacement within one day. It is important that the installers of replacement windows have a deep understanding of the history and design of traditional timber frames. This will enable them to make appropriate recommendations for energy efficiency improvements as well as other technological upgrades that won't affect the appearance of a building that is historic. Anyone who installs replacement windows must be registered under a Competent Persons Scheme like as FENSA. This will ensure that the replacement windows are approved as a suitable solution in accordance with Building Regulations. It is, of course, possible for an experienced and skilled carpenter to install PVC-u windows that are sympathetic to the character of the building originally. This is particularly applicable when windows are situated within listed buildings or conservation areas.