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Maintaining Timber Windows

A well-maintained and maintained timber window is an important part of the historic fabric of a building. It reflects in different degree the technology and materials of the time in which it was constructed, as well as the architectural style and craftsmanship.

When repairs are feasible to existing windows should be carried out in situ. The repair system that is based on resin can be used to repair the worst areas of decay without removing the entire window.

Durability

Timber windows were designed to last for hundreds of years. They require regular maintenance to keep them looking good. The most frequently-asked maintenance tasks include repairs to sash cords, re-tightening sash pulleys, and painting. The demand for enhancing timber windows in order to improve efficiency in energy use is also growing. This could include replacing old glazing units, fixing existing window rebates, or installing new cills for improved air seal.

A key problem with traditional windows is the damage caused by corrosion of the paintwork. This is particularly important when windows with sash are involved since the gaps between the sashes can be quite large. In these instances, water can penetrate the paint film and cause rotting of the putty as well as underlying wood. The rotting may be further aggravated by poor weather conditions. To prevent this from happening, windows should be painted regularly with an exterior wood paint.

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 greatest amount of the original fabric is retained. It is important to minimize the number of holes that are created in the frame to allow cable access, as these can admit moisture and cause decay.

The structural movement of the wall can also lead to distortions in the frame as well as sash. This can result in sash no longer fitting correctly or sticking or jamming into the opening and broken glazing. This is often corrected by putting in new frames for sash made of slow-growing deal (pine) or oak. The cill must be constructed from durable hardwood such as oak to prevent movement between the old and new work.

To alleviate this issue There are several companies that manufacture Boston pattern sash made of wood that can be fitted into most openings. They are available in a variety of sizes and finishes to meet the requirements of modern homeowners. The new sash, coupled with quadruple draft strips and a more efficient thermal insulation, could 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 reflect, in some form, the quality of the wood technology, the construction process, and the architectural aesthetics of the time they were built. They may have significant historical significance on their own. This is especially true for early unglazed window openings in timber framed buildings where the great majority were merely a series of openings in the frame, which were divided horizontally into mullions and vertical iron or wood bars to deter invaders.

It is essential to preserve the appearance of traditional timber window joinery. As soon as you see any signs of decay caused by moisture penetration it is essential to stop it. This can be done by painting thoroughly, especially in areas that have already suffered damage or degradation. It is recommended to use paints that are designed to be used in a set (primer undercoat and finish), and to follow the manufacturer's guidelines for preparation and number coats at each stage.

The fungus responsible for wet rot is able to spread quickly in old timber windows. To prevent this from happening, get rid of any damaged or rotten parts as promptly as you are able to. 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 avoid the possibility of differential movement.

In the late medieval and 17th century periods glass became more affordable and plentiful so that glazed openings in timber-framed buildings gradually became more elegant with wooden tracery moulded mullions, moulded mullions, and deep projecting cills. In recent times, glass was fixed into rebated frames with glazing sprigs rather than lead cames. This method of glazing not only makes upvc doors repairs Windows Cambridge (Lovewiki.Faith) less likely to leak and break, but also allows larger sheets of glass to be employed than would be possible otherwise without the use of led lights.

Energy efficiency

Traditional timber windows offer excellent energy efficiency due to their thickness, multi-layer construction and very attentive attention to detail. The large glass areas, the deep projection cills and wide glazing areas reduce air infiltration. The windows can be modified to improve their energy efficiency with draught-proofing and secondary glazing. However, it is important to keep in mind that these measures should be evaluated in the context of the overall integrity and appearance of the original window.

It makes sense to repair or upgrade existing windows, rather than replacing them, especially when the improvement in thermal efficiency can be achieved through simple repairs. Older windows are usually considered to be of historical value because they reflect a variety of technical development and changes to architectural taste. The pressure to replace these windows are usually based on the assumption that windows that are old will need to be replaced in the near future, however the majority of them are capable of providing service for 150, 200 and even 250 years if properly maintained.

It is essential to understand that the decay issues caused by traditional timber windows can be prevented by thorough maintenance and timely repairs. It is also important to identify damp problems and fix them quickly to avoid major damage. The early deterioration of paint is a particular problem, because it allows moisture to penetrate the wood and cause wet rot. It is not uncommon for this type of damage to go undetected until the paintwork begins to crack or become curly. However, it can cause structural damage and then further decay.

A high-quality paint will prevent this moisture penetration. To prevent mould and condensation it is essential to keep the paintwork as clean as possible. Modern synthetic paints are problematic since they are usually water-resistant and can cause mildew to grow 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 quickly when exposed to rain, however they can be preserved with a thorough preservation treatment before use. It is also important to ensure that the kind of wood used is suited to the site and climate conditions, as these factors will influence the durability of the joinery. Local window repair manufacturers provide an array of sash made from timber that can be customized to fit historic openings. They are available in the standard Boston pattern or in custom sizes to suit historic structures.

Maintenance

The life span of windows made from timber can be extended through regular inspections carefully redecoration, and timely repair. The main cause of decay is the penetration of moisture through deteriorated paint and putty. This can be avoided by thorough painting and using a good quality wood preservative.

It is important that repairs to old sash and casement windows are well executed and done with minimal disruption. Many traditional timber window designs can be repaired without removing the frame, and this option should be followed whenever possible. Peeling or loose paint should be removed with care and sanded lightly to increase the 'key' of the surface and allow for an improved adhesion of the new coating. Care should be taken to avoid stripping old paint layers which could have historical value If these are present it is recommended that a paint analysis be carried out.

When a piece of wood has become rotten the best option is to eliminate the rotten material and replace it with spliced-in inserts that are shaped to match the existing profiles. The timber that is inserted should be treated with wood preservative, and the joint between masonry sub-cills and timber cill should be sealed.

Replacement of traditional windows with PVC-u can be an appealing option, particularly when the installer provides a "one-stop shop" installation that takes care of removal and replacement within one day. It is vital that the installer of replacement windows has a complete understanding of the construction and history of traditional wooden sliding doors cambridge frames. This will allow them to make the right suggestions for energy efficiency improvements and other technological upgrades that will not harm the historical 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 solution in accordance with Building Regulations. A skilled carpenter is able to install PVC-u windows that are suited to the original building's style. This is especially true when windows are installed in listed buildings or conservation areas.