Revision as of 04:11, 13 July 2023 by 31.132.1.207 (talk) (Created page with "Maintaining Timber Windows<br /><br />A well-maintained and maintained timber window is a crucial part of the historic structure of a building. It demonstrates in various degr...")(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)Maintaining Timber WindowsA well-maintained and maintained timber window is a crucial part of the historic structure of a building. It demonstrates in various degrees the various materials and techniques design, craftsmanship and aesthetics of the period that it was built in.If repairs are possible to existing windows should be carried out in situ. Repair systems made of resin can be used to fix the most damaged areas of decay without having to remove the entire window.DurabilityTimber windows were made to last for centuries. However, they need to be maintained to keep them looking great and working properly. The most frequent maintenance tasks include sash-cord repairs and re-tightening the sash pulleys and painting. The need to upgrade timber windows to improve energy efficiency is also growing. This could mean replacing old glass units, fixing existing window rebates or putting in new cills that allow for better air sealing.The deterioration of paintwork is a major problem with traditional windows. This is particularly important when sash windows are involved as the gaps between the sashes can be quite large. In these instances water can get into the paint film and cause rotting of the putty and the wood underneath. The weather can be a factor in accelerating the decay. To prevent this from happening, windows must be regularly painted with an exterior wood paint.In addition to repainting, corroded areas must be repaired using a resin-based repair product. This will ensure that the highest possible amount of the original fabric is retained. It is also important to reduce the number of holes that are drilled into the frame for cable entry since these could allow water in and cause decay.Another major issue with older windows is structural movement in the wall which can cause deformation of the frame and sash. This could result in the sash not fitting properly or sticking or jamming into the opening, and damaged glazing. This can be fixed frequently by putting in new frames for sash made of slow-grown deal (pine), or oak. The cill should 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 to fit most existing openings. They are available in a variety of sizes and finishes to fit the needs of modern homeowners. The new sash, combined with quadruple draft strip and improved thermal insulation can significantly improve the efficiency of a home's energy use.AestheticsMany old timber frames have a high aesthetic appeal, since they reflect, in some form, the quality of the wood technology, design, and taste from the time period they were made. They also may have a significant historical significance in their own right. This is especially true of early windows that were not glazed in timber framed buildings which were simply a series of openings in the frame, which were divided horizontally into mullions and vertical wood or iron bars to deter invaders.Traditional timber window joinery is a beautiful element of a structure and is essential to maintain its appearance. When you spot any signs of decay due to the penetration of moisture it is crucial to stop it. This is best done by a thorough painting process, especially in areas that have already suffered damage or degradation. It is recommended to choose paints that are intended to be used in a system (primer undercoat and finish), and to follow the manufacturer’s recommendations 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 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. The replacement of rotting wood should be done with care and with a slow-growing deal (pine) and, if possible using the same species as that which is being removed to prevent any movement differences between the new and old timbers.Glass became cheaper and more abundant during the late medieval period and into the 17th century. As a result, the openings for glazed windows on timber-framed houses became more complex with moulded mullions, wooden tracery and deep cills projecting into the air. In recent times, glass was fixed into frames that were rebated with glazing sprigs rather than lead cames. This method of glazing not only makes the windows less likely to leak and also allows larger sheets of glass to be used than would have been possible without the use of led lights.Energy efficiencyTraditional timber windows provide excellent energy efficiency due to their thickness and multi-layer construction. They also pay careful attention to detailing. They also have large glass areas and deep projection cills which reduce air infiltration. With secondary glazing and draughtproofing, windows can be made more efficient to improve their energy efficiency. It is crucial to remember that these measures need to be taken into consideration in relation to the overall integrity and look of the original windows.So, retaining the existing windows from the past that require repair rather than replacing them makes sense particularly when thermal improvements can be achieved inexpensively with simple repairs and improvements. Older windows typically have an historic value that demonstrates a range of technological advances and changes in architectural taste. Many people believe that the windows will need to be replaced in the near future. However, they will last for 150,200, and even 250 years with proper maintenance.It is essential to understand that the decay issues that are that are typical of windows made of timber can be avoided by thorough maintenance and timely repairs. It is also crucial to recognize damp issues and fix them quickly in order to avoid major damage. Early paint deterioration could be a problem as it allows moisture to get into the wood, leading to wet rot. This type of damage is typically not noticed until the paintwork becomes cracking or wavy, but can cause significant structural damage, and could lead to further decay.A paint of good quality will stop moisture from entering the paint. It is also essential to keep the paintwork in good condition to avoid condensation and the growth of mould. Modern synthetic paints pose a problem because they are often water-resistant, and can cause mildew growth in the window frame.The majority of older windows were manufactured from timber containing the majority of sapwood. double glazing cambridge will deteriorate rapidly if exposed to wet weather, however they can be preserved with a thorough preservative treatment before they are used. It is also crucial to ensure that the kind of wood used is suited to the site and climate conditions, as these elements affect the durability of the joinery. Local window manufacturers produce a range of sash made of timber that can be adapted to fit specific openings from the past. They are available in the standard Boston pattern or in custom sizes to fit the architectural style of historic buildings.MaintenanceThe life span of windows made from timber can be extended significantly through regular inspections carefully redecoration, and prompt repair. The primary reason for the decay is moisture intrusion through deteriorated putty and paint. This can be avoided with careful painting and using an excellent wood preservative.Repairs to old sash windows as well as window frames made of casement should be done with care and minimal disruption. It is possible to repair the majority of traditional wooden window designs without taking the frame off. This should be done whenever possible. Loose or peeling paint must be removed with care and sanded lightly to improve the "key" of the surface and allow for a better adhesion of the new coating. Care should be taken to avoid stripping paint layers that might have historical significance If these are present it is recommended that a paint analysis be conducted.If a portion of wood is rotting the best way to deal with it is to take it off and replace it with timber inserts designed to match the existing profiles. The wood that is being inserted should be treated with wood preservative and the joint between the cill for timber and the sub-cill for masonry should be sealed.It can be tempting to replace traditional windows with PVC u, particularly when the installer provides an 'all-in-one' installation which includes both removal and replacement in one day. It is, however, crucial that the person who installs replacement windows has a full knowledge of the structure and history of traditional wooden frames. This will allow them to make the right suggestions for improvements to energy efficiency and other technical upgrades that will not harm the historic character of a building. Window replacements should be registered with a Competent Persons Scheme such as FENSA. This will ensure that the replacements are deemed as a suitable option under Building Regulations. It is quite possible for a skilled and experienced carpenter to install PVC-U windows that fit the style of the building originally. This is particularly applicable when windows are situated within listed buildings or conservation areas.