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Maintaining Timber Windows

A well-maintained wooden window is a crucial component of a historical building. It demonstrates in various degrees the various materials and techniques design, craftsmanship and aesthetics of the time from which it originates.

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

Durability

The windows made of wood in many old buildings were built to last for hundreds of years. They require regular maintenance to keep them looking great. The most common maintenance tasks are repairs to sash-cords as well as tightening sash pulleys and painting. There is also a rising demand to upgrade timber windows to increase energy efficiency. This can include replacing old glazing units, repairing the window rebates that are in place or installing new cills to increase the air seal.

A key problem with traditional windows is damage caused by corrosion of the paintwork. This is especially important where windows made of sash are involved because the gaps between the sashes can be very wide. In these instances, water can penetrate paint film and cause rotting of the wood or putty underneath. The weather can be a factor in accelerating the rotting. To prevent this from happening, windows should be painted regularly with an exterior wood paint.

In addition to repainting, corroded areas must be repaired using an adhesive-based repair product. This will ensure the maximum amount of the original fabric is preserved. It is also essential to limit the number of holes you drill into the frame to allow cable entry since these could let in water and cause decay.

Another major issue with older windows is structural movement in the wall that could cause deformation of the frame and the sash. This can result in the sash not fitting properly or sticking or jamming into the opening and cracked glazing. This can be corrected often by fitting new sash frames made of slow-grown deal (pine) or oak. The cill must be constructed from durable hardwood such as oak to avoid differential movement between the existing and new work.

There are now several companies that make Boston pattern wooden sash that fit into the majority of existing openings. These sash come in various sizes and finishes that fit the needs of modern-day homeowners. These sash are combined with quadruple draft strips and improved thermal insulation can make a huge difference to the efficiency of a home's energy use.

Aesthetics

Many old wooden windows have an excellent aesthetic value because they typically demonstrate, in a way the materials and technologies and architectural style of the period from which they originate. They may have significant historical significance in their own right. This is particularly true of windows that were unglazed in the early days of timber-framed buildings, which were merely a series of openings within the structural frame sub-divided horizontally into mullions and iron or wood bars to keep out intruders.

It is crucial to maintain the appearance of traditional wooden window joinery. It is crucial that any decay resulting from moisture penetration should be immediately stopped once it is identified. This can be done by applying a thorough coat of paint, particularly in areas where there has already been damage or degradation. It is recommended to use paints designed to be used in a set (primer undercoat and finish) and to adhere to the manufacturer's recommendations for preparation and number coats at each stage.

Wet rot is a common problem in older timber windows. The best way to stop it growing is to eliminate any damaged or rotten parts immediately to prevent the spread of the fungus responsible for it. The replacement of rotting wood must be done with care with a slow-growing deal (pine) and, door fitter upvc doors cambridge; click4r.com, wherever possible using the same species as that which is being removed to avoid any movement differences between the new section and the existing timbers.

Glass became more affordable and abundant in the late medieval period and into the 17th century. As a result, glazed openings on timber-framed houses were more elaborate, with moulded mullions, wooden tracery and cills that protruded deep. Increasingly, the glazing was placed within frames with rebates and secured by 'glazing sprigs' rather than being inserted into lead cames. This method of glazing is not just less susceptible to leaks, but it can allow for more expansive and clearer sheets of glass to be used in the cambridge windows and doors than would otherwise have been possible without the need for lead lights.

Energy efficiency

Traditional timber windows offer excellent energy efficiency due to their thickness and multi-layer construction, as well as meticulous attention to detail. They also have large glass areas and deep projecting cills that reduce air infiltration. With secondary glazing and draughtproofing, the windows can be improved to increase their energy efficiency. However it is crucial to remember that such measures should be viewed in the context of the overall quality and appearance of the window in its original form.

It is logical to repair or upgrade existing windows that are older rather than replacing them, particularly when improvements in thermal efficiency can be made through simple repairs. Older windows are usually considered to be of historical value because they reflect a variety of technological advancement and changes in the architectural style. The pressures to replace such windows are generally based on the assumption that old windows will need replacement in the near future, but the majority of them are in a position to last for 150, 200 and even 250 years, if properly maintained.

It is crucial to recognize that the decay issues that are typical of timber windows can be prevented by thorough maintenance and prompt repairs. It is also crucial to recognize damp issues and fix them quickly in order to avoid major damage. The early deterioration of paint could be a problem as it allows moisture to penetrate into the wood, causing wet rot. This type of damage is typically not evident until the paintwork is cracking or wavy, but can cause significant structural damage and can lead to further decay.

A quality paint will prevent moisture penetration. It is also important to keep the paintwork spotless in order to prevent condensation and the growth of mould. The use of modern synthetic paints can be problematic since they are typically made to be water-resistant and this can cause the growth of mildew inside the window frame.

The majority of older windows were constructed from timber with a high proportion of sapwood. The timbers will deteriorate rapidly if exposed to rain, but they can be protected by an extensive preservation treatment prior to use. It is crucial to select the appropriate type of wood for your location and climate, as these factors can affect the durability of the joinery. Local window manufacturers have a wide range of timber sash which can be customized to fit historic openings. They can be produced in the standard Boston pattern or in custom sizes to suit historical buildings.

Maintenance

Regular 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 the deteriorated paint and putty. This can be avoided with careful painting and door Fitter cambridge using a good quality wood preservative.

Repairs to old sash windows as well as frameless casement windows should be done with care and with minimal disruption. Repairs can be made to the majority of traditional wooden window designs without having to remove the frame. This should be done as often as is feasible. Peeling or loose paint should be removed with care and sanded lightly to increase the "key" of the surface and facilitate an easier adhesion of the new coating. Be careful to avoid stripping old paint layers which might have historical significance and if they are present, it is recommended that a study of the paint be conducted.

When a section of wood has rotted, the best solution is to take it off and replace it with timber inserts that are shaped to match the existing profiles. The wood that is being inserted should be treated with wood preservative, and the junction between the timber cill and the sub-cill of the masonry should be sealed.

Replacement of windows and doors cambridge made of traditional PVC-u may be a tempting option, especially when the installer offers a 'one stop shop' installation that handles removal and replacement within the span of a day. It is essential that the person installing replacement windows has a full knowledge of the structure and history of traditional timber frames. This will allow them to make the right suggestions for energy efficiency improvements and other technical improvements that will not harm the historical character of a building. Window replacements should be registered with a Competent Persons Scheme like FENSA. This will ensure that the replacements are deemed to be approved by the Building Regulations as a suitable alternative. It is, of course, possible for a skilled and experienced carpenter to install PVC-u windows that fit the the original building. This is particularly relevant when windows are located within conservation areas or listed buildings.