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Maintaining Timber Windows

A well-maintained wooden window is a crucial component of a historical building. It reflects, in various degrees, the materials and technologies of the time in which it was made, the design and craftsmanship.

If it is possible, repairs must be done in-situ. Repairing the worst areas of decay can be done by using specialized resin-based systems.

Durability

The timber windows in many historical buildings were built to last for hundreds of years. But, they have to be maintained to ensure that they look good and functioning correctly. Maintenance tasks include repairs to sash cords as well as tightening the sash pulleys and painting. There is a growing need to upgrade the timber windows to increase energy efficiency. This may mean replacing old glazing units, fixing the window rebates that are in place or putting up new cills that allow for better air sealing.

The deterioration of paintwork is a major problem with traditional windows. This is particularly important when windows with sash are involved since the gaps between the sashes can be quite wide. In these instances water can enter the paint film and cause rotting of the wood or putty underneath. Poor weather conditions can exacerbate the decay. To prevent this windows from becoming rotten, they must be regularly painted with an exterior wood paint that is suitable.

In addition to repainting, areas that have corroded should be repaired with the help of a resin-based repair solution. This will ensure that the highest possible amount of the original fabric remains. It is important to minimize the number of holes that are created into the frame to allow cable entry as these can admit moisture and cause decay.

Another major issue with older windows is structural movement in the wall that can cause deformation of the frame and sash. This can lead to sash not fitting correctly jamming, sticking or sagging in the opening, and broken glass. Often this can be corrected by the fitting of new sash window repair cambridge boxes that have been made from slow grown deal (pine) or oak. The cill should be constructed of a strong hardwood such as oak, to avoid shifting between the new and existing work.

To reduce the risk, there are now a number of companies who make Boston pattern sash made of wood that will fit most existing openings. These sash are available in a range of sizes and finishes that meet the needs of the modern homeowner. These sash are combined with quadruple draft strip and a more efficient thermal insulation, could make a significant difference to the energy-efficiency of a home.

Aesthetics

Many old timber frames possess a dazzling aesthetic appeal, since they display, in a certain form, the quality of the wood technology, the construction process, and the architectural taste from the time period they were constructed. They could also have significant historical value in their in their own right. This is especially true of early unglazed window lock repairs openings in timber-framed structures, which were simply a series of openings within the frame, which were divided horizontally into mullions and wood or iron bars to deter intrusions.

It is important to maintain the appearance of traditional wooden window joinery. It is essential that any decay that results from water penetration is stopped as soon as it is discovered. This is best done by painting thoroughly, especially in areas where there has already been damage or degradation. It is recommended to use paints that are designed to be used in a set (primer undercoat and finish) and follow the manufacturer's guidelines for preparation and number of coats at each stage.

Wet rot is a frequent problem for old timber windows and the best method to stop it from growing is to eliminate sections that are damaged or rotten as soon as possible to prevent the spread of the fungus responsible for it. Replace rotting wood with slow-growing deal (pine), and when possible, the exact kind of timber as the one being removed to prevent the possibility of differential movement.

Glass became less expensive and more abundant in the late medieval era and into the 17th century. This led to the glazed openings in timber-framed homes became more complicated with moulded mullions, wooden tracery and deep projecting cills. In recent times, glass was pinned into rebated frames with glazing sprigs, not lead cames. This method of double glazing repairs near me glazing seal repairs (linked webpage) not only makes windows less likely to leak, but also allows for larger sheets of glass to be utilized than would have been feasible without the use of led lights.

Energy efficiency

The traditional timber windows are energy efficient because of their thickness and multilayer construction, as well as their care for detail. They also feature large glass areas as well as deep projecting cills that reduce air infiltration. With secondary glazing and draughtproofing windows can be made more efficient to increase their energy efficiency. It is crucial to keep in mind that these measures need to be taken into consideration when it comes to the overall integrity and appearance of the original windows.

It is logical to repair or upgrade existing historic windows rather than replace them, particularly when improvements in energy efficiency can be made through simple repairs. Historic windows are often of historical value, as they show a range in technical development and changes to architectural style. The pressure to replace these windows are usually based on the assumption that old windows will need replacement in the near future, however the majority of them are in a position to last for 150, 200 or even 250 years if they are properly maintained.

It is crucial to recognize that the decay issues that are associated with traditional timber windows can be avoided by regular maintenance and prompt repairs. It is also crucial to identify damp problems and address them promptly in order to avoid major damage. Early paint deterioration could be a problem as it allows moisture to penetrate into the wood, causing wet rot. It is not uncommon for this damage to go unnoticed until paintwork begins to crack or becomes wavier. However, it could cause structural damage and then further decay.

A good quality paint will prevent this moisture penetration. To avoid condensation and mould it is crucial to keep the paintwork as clean as possible. Modern synthetic paints pose a challenge because they are water-resistant, and can cause mildew growth within the window frame.

The majority of windows from the past were manufactured from timber containing an extensive proportion of sapwood. These timbers can deteriorate very quickly when exposed to wet weather, however they can be protected with a thorough preservative treatment before they are used. It is also important to ensure that the type of wood used is suited to the climate and site conditions, since these factors affect the durability of the joinery. Local window mechnism repair manufacturers make various types of timber sash that can be customized to fit specific openings from the past. They can be made in the standard Boston pattern or in custom sizes to fit the architectural style of historic buildings.

Maintenance

The life span of windows made from timber can be extended significantly through regular inspections, careful redecoration and timely repair. The primary cause of wood decay is moisture penetration through deteriorated paint and putty. This can be prevented by careful painting and the use of a good quality wood preservative.

Repairs to sash windows that are old and window frames made of casement should be handled with care and with the least amount of disruption. It is possible to fix several traditional designs of timber windows without taking the frame off. This should be done whenever possible. Paint that is peeling or loose must be removed with care and lightly sanded to improve the "key" of the surface, allowing for a better adhesion of the new coating. It is crucial to avoid removing old paint layers, which could have historical significance.

Where a section of timber has become rotten the best course of action is to eliminate the rotten material and replace it with spliced-in timber inserts that are shaped to match existing profiles. The timber inserts should be treated using wood preservative and the junction between masonry sub-cills and timber cill should be sealed.

Replacement of traditional windows with PVC-u can be an attractive option, especially when the installer offers an "all-in-one" installation service that can upvc door handle repairs near me both removal and replacement within one day. It is essential that the person installing replacement windows has a complete understanding of the construction and history of traditional timber frames. This will allow them to make appropriate recommendations for energy efficiency improvements as well as other technological upgrades that won't affect the appearance of an historic building. Those providing replacement windows should be registered with a Competent Persons Scheme such as FENSA. This will ensure that the replacements are deemed as a suitable solution under Building Regulations. A skilled carpenter can install PVC-u Windows that are sympathetic to original building's character. This is especially true when windows are installed in listed buildings and conservation areas.