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Maintaining Timber Windows

A well-maintained window made of timber is a crucial part of the historic structure of a building. It reflects in varying levels, the materials and techniques of the time period it was constructed, the architectural style and craftsmanship.

If possible, repairs should be done in-situ. Repairing the most deteriorated areas of decay can be accomplished with the help of specialized resin-based systems.

Durability

The timber windows in many historic buildings were built to last for a long time. But, they have to be maintained to ensure that they look good and functioning correctly. The most frequently-asked maintenance tasks include sash-cord repairs as well as tightening sash pulleys and painting. There is also a growing demand to upgrade timber windows to increase the efficiency of energy. This may mean replacing old glazing units, fixing the window rebates that are in place, or installing new cills to allow for better air sealing.

The corrosion of paintwork is a major issue with traditional windows. This is especially true when sash windows are concerned as the gaps between sashes can be very large. In these circumstances, water can penetrate the paint film and cause rotting of the putty and the wood beneath. The rotting can be exacerbated due to weather conditions that are poor. To prevent this from happening, cambridge windows must be painted regularly with an exterior wood paint.

Corroded areas should also be repaired using a resin-based product. This will ensure that the highest possible amount of the original fabric remains. It is also important to reduce the number of holes drilled into the frame to allow cable entry since these could admit water and lead to decay.

Another issue with older windows is the structural movement within the wall, which can lead to deformation of the frame and sash. This could result in the sash not fitting properly and jamming or sticking to the opening and broken glazing. Most often, this is corrected by the fitting of new sash boxes constructed from slow-growing deal (pine) or oak. The cill must be constructed from durable hardwood such as oak to avoid differential movement between the new and existing work.

There are now several companies that manufacture Boston pattern wooden sash that fit most existing openings. These sash are available in a variety of sizes and finishes to meet the needs of the modern homeowner. These sash are combined 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 frames have a great aesthetic appeal because they display, in a certain shape, the materials technology, the construction process, and the architectural taste from the time period they were made. They could also have significant historical value in their own right. This is particularly true of early windows that were not glazed in timber-framed structures, where the great majority were merely a series of openings in the frame that were subdivided horizontally into mullions and vertical iron or wood bars to deter intruders.

It is crucial to maintain the appearance of traditional wooden window joinery. It is vital that any decay caused by water penetration is removed as soon as it is identified. This can be done by applying a thorough coat of paint, particularly in areas in which there is already damage or degradation. It is recommended to use paints designed to be used as part of the system (primer undercoat, finish) and follow the manufacturer's guidelines in relation to preparation and the amount of coats needed at each stage.

Wet rot is a common problem in old timber windows. The best way to stop it growing is to eliminate any damaged or rotten parts immediately to stop the spread of the fungus that causes it. Replace the wood that is rotting with slow-growing deal (pine) and, should it be possible, the same kind of timber as the one being removed, to prevent the possibility of differential movement.

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 structures gradually became more sophisticated, with tracery made of wood, moulded mullions and deep projecting cills. In recent years, glass was fixed to rebated frames with glazing sprigs, not lead cames. This method of glazing not only makes windows less likely to leak and also allows more clear glass sheets to be employed than would be possible otherwise without the use of leaded lights.

Energy efficiency

Traditional timber windows are energy efficient because of their thickness and multilayer construction, as well as their care for particulars. The large glass areas, deep projecting cills and large glazing areas minimize air infiltration. With secondary glazing and draught proofing, the windows can be improved to improve their energy efficiency. It is crucial to keep in mind that these measures must be considered when it comes to the overall integrity and look of the original windows.

It is logical to door seal repair near me or upgrade existing windows, rather than replacing them, particularly when improvement in thermal efficiency can be achieved by simple repairs. Older windows are usually of historical significance, since they show a range in technical development and changes to architectural taste. Most people assume that these windows will have to be replaced in the near future. However, many of them are still in service for 150, 200, or even 250 years if they are maintained with proper maintenance.

It is crucial to understand that decay problems with traditional timber windows are easily prevented with quick and thorough repairs. It is also crucial to spot damp issues and correct them swiftly to avoid major damage. Early deterioration of paint is a particular problem, since it allows moisture penetrate the wood and cause wet rot. This damage is often not evident until the paintwork is cracking or wavy but it can cause severe structural damage and lead to further decay.

A high-quality paint will stop this moisture penetration. It is also important to keep the paintwork clean in order to prevent mould and condensation. Modern synthetic paints pose a challenge because they are water-resistant, and can cause mildew growth in the window and door repair near me frame.

Most older windows were made from sapwood-rich wood. These timbers can deteriorate very quickly when exposed to wet weather, however they can be preserved with a thorough treatment of preservative before 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 elements affect the durability of the joinery. Local window manufacturers produce a range of sash made of timber that can be tailored to fit specific openings from the past. They can be constructed according to the standard Boston pattern dimensions or to custom sizes that fit with historic buildings.

Maintenance

Regular inspections carefully redecorated, as well as prompt repairs can extend the life of timber windows. The primary cause of decay is the infiltration of moisture through deteriorated putty and paint. This can be prevented by using a high-quality wood preservative and thoroughly painting the wood.

upvc repairs to sash windows that are old and casement window doctor cambridge frames must be done with care and minimal disruption. Many traditional timber window designs can be repaired without removing the frame, and this option should be followed whenever feasible. Loose or peeling paint must be removed with care and sanded lightly to increase the 'key' of the surface and facilitate a better adhesion of the new coating. It is important to avoid removing old paint layers, as they may have historical significance.

Where a section of timber is rotten, the best way to proceed is to eliminate the rotten material and replace it with spliced-in timber inserts that are shaped to match the existing profiles. The timber that is inserted should be treated using wood preservative, and the joint between masonry sub-cill and timber cill should be sealed.

Replacement of traditional windows with PVC-u is an appealing option, particularly when the installer offers a "one-stop shop" installation that takes care of removal and replacement within a day. It is essential that installers of replacement windows have a deep understanding of the history and design of traditional timber frames. This will enable them to make appropriate suggestions for improvements to energy efficiency and other technical upgrades that won't harm the historical character of a building. Those providing replacement windows should be registered with a Competent Persons Scheme such as FENSA. This will ensure the replacements are approved in accordance with Building Regulations as a suitable alternative. It is, of course, possible for a skilled and experienced carpenter to install PVC-u windows that are sympathetic to the style of the building originally. This is particularly relevant when cambridge windows are in listed buildings or conservation areas.