Maintaining Timber Windows

A well-maintained wooden window is an essential component of a historical building. It illustrates in varying degrees the materials and technologies as well as the craftsmanship and architectural style of the period from which it dates.

When possible, upvc door repairs should be made in-situ. Repairing the worst areas of decay can be accomplished by using specialized resin-based systems.

Durability

Timber windows were designed to last for centuries. They do require maintenance to keep them looking good. Maintenance tasks include repairs to sash cables as well as tightening the sash pulleys and painting. There is also a rising demand for upgrading timber windows to improve energy efficiency. This could include replacing old double glazing repairs near me units, repairing the window rebates that are in place or installing new cills to improve air seal.

The corrosion of paintwork is a major issue with traditional windows. This is particularly true when windows with sash are involved since the gaps between the sashes can be quite wide. In these situations, water can penetrate the paint film and cause rotting of the putty as well as the wood beneath. The rotting can be exacerbated by weather conditions that are not ideal. To prevent this from happening, windows need to be regularly painted with an exterior wood paint.

In addition to repainting, corroded areas must be repaired using the help of a resin-based repair solution. This will ensure that the maximum amount of original fabric retained. It is crucial to reduce the number of holes made into the frame in order to allow cable entry, because they could let in moisture and cause decay.

Another issue with older windows is structural movement in the wall that can cause deformation of the frame and the sash. This could result in sash not fitting correctly jamming, sticking or sagging in the opening, and broken glass. Most often, this is corrected through the installation of new sash boxes that have been made from slow grown deal (pine) or oak. The cill should be made from a sturdy hardwood such as oak to avoid differential movement between the new and existing work.

There are now several companies that produce Boston pattern wooden sash that fit most existing openings. These sash come in a variety of sizes and finishes that fit the needs of modern homeowners. In conjunction with quadruple draught strip and improved thermal insulation, these new sash can make a substantial difference to the energy efficiency of a home.

Aesthetics

Many old timber windows have a great aesthetic value since they usually show, in a particular way, the materials and technology and architectural taste of the time from when they were built. They could have significant historical value in their own right. This is especially true of windows that were unglazed in the early days of timber-framed structures, where the majority of them were series of openings in structural frames that were subdivided horizontally by mullions, and vertically by iron or wood bars to keep out intrusions.

It is crucial to maintain the appearance of traditional wooden window joinery. When you spot any signs of decay caused by water penetration it is crucial to stop it. It is best to do this through thorough painting, especially where there has been damage or deterioration. 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 terms of preparation and the number of coats required at each stage.

The fungus that causes wet rot can quickly spread in old windows made of timber. To prevent this, get rid of any damaged or rotten components as promptly as you are able to. The replacement of rotting timber should be carefully undertaken using slow grown 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 more affordable and abundant during the late medieval period and into the 17th century. This led to the glazed openings in timber-framed homes were more elaborate, with moulded mullions and traceries, made of wood and deep projecting cills. Increasingly, the glazing was placed within frames with rebates and pinned in with 'glazing sprigs', rather than into lead cames. This method of glazing not only makes the windows less likely to leak and also allows more clear glass sheets to be utilized than would have been possible without the use of lead lights.

Energy efficiency

Traditional timber windows are energy efficient due to their thickness and multilayer construction as well as care for detail. The large glass areas, deep projection cills and wide glazing areas minimize air infiltration. Windows can be designed to improve their energy efficiency through draughtproofing and secondary glazing. It is essential to keep in mind that these measures should be considered when it comes to the overall appearance and integrity of the original windows.

It is logical to fix or upgrade historic windows rather than replace them, especially when the improvement in thermal efficiency can be made by simple repairs. Historic windows are often of historical significance, since they show a range in 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 capable of serving for 150, 200 and even 250 years, if properly maintained.

It is essential to realize that decay problems with traditional timber windows can be avoidable with quick and thorough repairs. In addition it is crucial to recognize damp penetration issues and address them swiftly to avoid serious damage. The early deterioration of paint is a concern because it allows moisture to penetrate into the wood, causing wet rot. This damage is often not apparent until the paintwork is cracking or wavy however, it can cause serious structural damage and can lead to further decay.

A paint of good quality will prevent moisture penetration. 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 to develop within the window frame.

Most older windows were made from sapwood-rich timber. The timbers will deteriorate rapidly if exposed to rain, however they can be protected with a thorough preservation process prior to use. It is essential to select the right type of wood for the location and climate, as these factors can affect the longevity of the joinery. Local window manufacturers provide an array of sash made from timber that can be adapted to fit historical openings. They can be built according to the standard Boston pattern dimensions or to custom sizes that fit with historic buildings.

Maintenance

The lifespan of windows made of timber can be extended considerably through regular inspections, careful redecoration and prompt upvc door repair. The primary cause of wood decay is the penetration of moisture through deteriorated paint and putty. This can be prevented by using a good wood preservative and thoroughly painting the wood.

It is crucial that repairs to the old sash and aluminium casement Windows cambridge windows are properly executed and done with the minimum disturbance. Many of the traditional designs for timber windows can be repaired without dismantling the frame, and this option should be taken whenever feasible. Remove any peeling or loose paint and then lightly sand the surface to improve the 'key" of the surface. This will enable the new coating to stick better. It is crucial to not remove old paint layers, which may have historical value.

If a portion of wood is decayed, the best solution is to take it off and replace it with timber inserts that are shaped to match existing profiles. The wood that is inserted should be treated with wood preservative and the connection between the timber cill and masonry sub-cill should be sealed.

It's tempting to replace traditional windows with PVC u, especially when the installer offers an installation that includes removal and replacement in one day. It is essential that the person installing replacement windows has a full understanding of the construction and history of traditional timber frames. This will allow them to make the appropriate suggestions for energy efficiency improvements and other technical improvements that do not alter 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 approved as a suitable solution in accordance with Building Regulations. A skilled carpenter can put in PVC-u windows that conform to the original building's style. This is particularly relevant when windows are located within listed buildings or conservation areas.