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Maintaining Timber WindowsA well-maintained wooden window is an important element of a building that is historic. It reflects in different levels, the materials and technologies of the time it was constructed, the architectural style and craftsmanship.Whenever possible repairs to windows that are already in use should be done in situ. The repair system that is based on resin can be used to fix the most deteriorated areas without removing the whole window.DurabilityThe windows made of timber in many historic structures were designed to last for a long time. However, they need to be maintained to ensure they look good and operating properly. The most common maintenance tasks include sash-cord repairs as well as tightening sash pulleys and painting. The need to upgrade windows made of timber to increase energy efficiency is also growing. This may include replacing old glazing units, fixing existing window rebates or installing new cills to improve air seal.The corrosion of paintwork is a major problem with traditional windows. This is particularly important when windows made of sash are involved because the gaps between sashes can be quite wide. In these situations, water can penetrate paint film and cause rotting to the putty or wood beneath. The rotting can be exacerbated by weather conditions that are not ideal. To stop this from happening windows from becoming rotten, they must 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 that the highest possible amount of the original fabric is preserved. It is essential to limit the number of holes made into the frame to allow cable access, because they could let in moisture and cause decay.Another major issue with older windows is structural movement in the wall, which can lead to deformation of the frame and sash. This can lead to the sash not fitting properly, jamming or sticking in the opening, and broken glass. This can be fixed frequently by fitting new sash frames constructed of slow-growing deal (pine) or oak. The cill should be made of a durable hardwood like oak to prevent movement between the new and existing work.There are now several companies that make Boston pattern wooden sash to fit most existing openings. These sash come in a variety of sizes and finishes that meet the requirements of modern-day homeowners. The new sash, coupled with quadruple draft strips and a more efficient thermal insulation, could make a significant difference to the efficiency of your home’s energy usage.AestheticsA lot of old timber frames possess a dazzling aesthetic appeal, since they show, in some form, the quality of the wood technology, design, and taste from the time period they were constructed. They could also have significant historical value in their in their own right. This is particularly true of early unglazed windows in timber-framed structures, where the majority were series openings in structural frames subdivided horizontally by mullions, and vertically by iron or wood bars to protect against invaders.Traditional window joinery made of timber is a beautiful element of a structure and it is important to keep its appearance. As soon as you notice any signs of decay due to water penetration it is essential to stop it. upvc locksmith cambridge is best to do this through thorough painting, particularly if there is damage or degradation. It is recommended to choose paints that are intended to be used in a system (primer undercoat and finish) and follow the manufacturer’s recommendations for preparation and number of coats at each stage.Wet rot is a common problem for old timber windows. The best method to stop it from growing is to eliminate any damaged or rotten parts as soon as you can to stop the spread of the fungus that causes it. The replacement of wood that is rotting should be done with care and with a slow-growing deal (pine) and, if possible it is the same species as which is being removed in order to prevent differential movement between the new section and the existing timbers.In the late the 17th and early the medieval periods, glass became more affordable and plentiful so that glazed openings in timber-framed structures gradually became more sophisticated, with tracery made of wood as well as moulded mullions and projection cills. The glazing was increasingly laid within rebated frames and secured with ‘glazing sprigs’, rather than being inserted into lead cames. This method of glazing not only makes windows less likely to leak and also allows wider sheets of clearer glass to be employed than would be feasible without the use of led lights.Energy efficiencyTraditional timber windows provide excellent energy efficiency due to their thickness and multi-layer construction, as well as careful attention to detailing. They also feature large glass areas and projecting cills that minimise air infiltration. Windows can be designed to improve their energy efficiency through draughtproofing and secondary glazing. However, it is important to keep in mind that any such measures should be viewed in relation to the overall integrity and appearance of the original window.It is logical to repair or upgrade existing windows that are older rather than replacing them, especially when the improvements in energy efficiency can be made through simple fixes. Historic windows are often considered to be of historical value because they reflect a variety of technological advancements and changes to architectural style. The pressure to replace these windows are typically based on the assumption that the old windows will need replacement in the near future, but they are capable of serving for 150, 200 or even 250 years, if properly maintained.It is crucial to recognize that the decay issues that are that are typical of timber windows can be prevented by regular maintenance and timely repairs. In addition it is crucial to recognize damp penetration issues and to remedy them quickly to avoid serious damage. The early deterioration of paint is a concern because it allows moisture to penetrate into the wood, leading to wet rot. The damage is usually not noticed until the paintwork is cracking or wavy however, it can cause serious structural damage and lead to further decay.A good paint will prevent moisture penetration. To prevent condensation and mould, it is important to keep the paintwork as clean as it can be. The use of modern synthetic paints can pose a problem, as they are often made to be water-resistant which can result in the formation of mildew within the window frame.The majority of windows from the past were constructed from sapwood-rich timber. These timbers deteriorate quickly if exposed to rain, however they can be protected by an extensive preservation treatment prior to use. It is also important to ensure that the type of wood used is suitable to the location and climate conditions, as these elements can affect the longevity of the joinery. Local window manufacturers have a wide range of sash timbers that can be customized to fit historic openings. They can be made in the standard Boston pattern or in custom sizes to fit the architectural style of historic structures.MaintenanceRegular inspection as well as careful redecoration and timely repairs can prolong the life of wooden windows. The main cause of decay is moisture penetration through deteriorated paint or putty. This can be avoided by using a quality wood preservative and thoroughly painting the wood.It is crucial that repairs to old sash and casement windows are well executed and done with the minimum disturbance. A lot of traditional wooden window designs can be repaired without dismantling the frame, and this method should be followed whenever feasible. Paint that is peeling or loose should be removed carefully and lightly sanded to improve the “key” of the surface and facilitate a better adhesion of the new coating. Be careful to avoid stripping paint layers that might have historical significance, and where these are present, it is recommended that a paint analysis be conducted.When a section of wood is rotting the best option is to remove it and replace it with timber inserts that are shaped to match the existing profiles. The wood that is being inserted should be treated with a wood preserver and the joint between the timber cill and the sub-cill of the masonry should be sealed.Replacement of windows made of traditional PVC-u may be a tempting option, especially when the installer provides an “all-in-one” installation that handles removal and replacement in one day. It is, however, essential that the person installing windows replacement has a thorough knowledge of the structure and history of traditional timber frames. This will allow them to make the appropriate suggestions for improvements to energy efficiency and other technical improvements that do not alter the character of a historic building. The windows that are replaced should be registered under a Competent Persons Scheme such as FENSA. This will ensure the replacements are deemed to be approved by the Building Regulations as a suitable option. It is certainly possible for an experienced and skilled carpenter to install PVC-U windows that match the character of the original building. This is especially true where windows are situated in listed buildings and conservation areas.