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Maintaining Timber Windows

A well-maintained and maintained timber window supplier cambridge is an important element of the historic fabric of a building. It reflects, in various degree the materials and techniques of the time period it was constructed, the design and craftsmanship.

When repairs are feasible to windows that are already in use should be carried out in situ. Proprietary resin-based repair systems can be used to fix the most deteriorated areas without having to remove the entire window doctor cambridge.

Durability

The windows made of wood in many historic buildings were made to last for centuries. They do require some maintenance to keep them looking great. The most frequently-asked maintenance tasks are repairs to sash-cords, re-tightening sash pulleys, and painting. The need to upgrade timber windows in order to improve efficiency in energy use is also growing. This may include replacing old glazing units, repairing existing window rebates 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 particularly true when sash windows are involved as the gaps between the sashes can be extremely wide. In these cases water can get into paint film and cause rotting of the wood or putty beneath. The weather can be a factor in accelerating the rotting. To avoid this, windows should be painted regularly with an exterior wood paint that is suitable.

The areas that are damaged should also be repaired using resin-based products. This will ensure the maximum amount of the original fabric is preserved. It is also important to minimise the number of holes that are drilled into the frame to allow cable entry, as they could allow water in and cause decay.

The structural movement of the wall can also lead to deformations in the frame and sash. This can lead to sash not fitting correctly jamming, sticking or sagging in the opening, and broken glass. This is often corrected by fitting new sash frames made of slow-grown deal (pine) or oak. The cill should be made from durable hardwood such as oak to avoid differential movement between the existing and new work.

There are several companies that produce Boston pattern wooden windows and doors cambridge sash to fit into the majority of existing openings. The sash is available in a variety of sizes and finishes that will meet the requirements of modern homeowners. These sash are combined with quadruple draft strips and improved thermal insulation can make a significant difference to the energy-efficiency of a home.

Aesthetics

Many old timber windows have a great aesthetic value because they typically demonstrate, in a way the materials and technologies and architectural taste of the time from when they were built. They may have significant historical significance as a set. This is particularly true of windows that were unglazed in the early days of timber-framed buildings, which were simply a series of openings in the frame that were subdivided horizontally into mullions and vertical iron or wood bars to deter intrusions.

It is essential to preserve the appearance of traditional wooden window joinery. As soon as you notice any signs of decay due to water penetration it is crucial to stop it. It is best to do this with thorough painting, particularly if there has been damage or deterioration. It is advisable to use paints specifically designed to be used as part of a system (primer as well as undercoat, finish and primer) and to follow the manufacturer's recommendations in relation to preparation and number of coats required at each stage.

The fungus that causes wet rot can quickly spread in old windows made of timber. To stop this from happening, remove any damaged or rotten components as soon as you can. The replacement of wood that is rotting should be done with care and by using a slow-growing deal (pine) and, whenever possible it is the same species as that which is being removed to prevent shifting between the new and old timbers.

Glass became more affordable and abundant in the late medieval period and into the 17th century. As a result, the openings for glazed windows on timber-framed houses were more elaborate, with moulded mullions, wooden tracery and cills that protruded deep. In recent years, glazing was fixed into frames that were rebated with glazing sprigs rather than lead cames. This method of glazing is not just less prone to leaks but also allows for larger clearer, more transparent sheets of glass to be used in windows than would have been possible without the need for leaded lights.

Energy efficiency

Traditional timber windows offer a good energy performance due to their thickness and multi-layer construction. They also pay attentive attention to detail. They also feature large glass areas and deep projecting cills that reduce air infiltration. The windows can be made to increase their energy efficiency with draught-proofing and secondary glazing. However, it is important to keep in mind that any such measures must be considered in terms of the overall integrity and appearance of the original window.

So, retaining existing historic windows that require repair rather than replacing them makes sense especially when their thermal enhancements can be achieved cost-effectively through simple repairs and improvements. The windows of the past often have an historic value that demonstrates a range of technological advancement and changes in architectural taste. The pressures to replace such windows are usually based on the assumption that old windows will need replacement in the near future, but 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 associated with traditional timber windows can be prevented by thorough maintenance and swift repairs. It is also essential to identify damp problems and correct them swiftly to avoid major damage. Early paint deterioration can be a problem because it allows moisture to get into the wood, which can cause wet rot. It is not uncommon for this damage to go unnoticed until the paintwork begins to crack or become curly. However, it can cause structural damage and lead to further decay.

A high-quality paint will prevent this moisture from entering. It is also important to keep the paintwork clean to avoid mould and condensation. The use of modern synthetic paints can be problematic since they are typically formulated to be water-resistant, and this may result in the formation of mildew inside the window frame.

Most older windows were made from sapwood-rich timber. The timbers will deteriorate rapidly if exposed to rain, but they can be protected with an extensive preservation treatment prior to use. It is also important to ensure that the type of wood used is suitable to the site and climate conditions, as these factors can affect the longevity of the joinery. Local window manufacturers offer a wide range of timber sash which can be made to fit the historic openings. They are available in the standard Boston pattern or in custom sizes to suit historic structures.

Maintenance

The life span of cambridge windows and doors made from timber can be extended through regular inspections as well as a careful redecoration and prompt repair. The most common cause of decay is moisture infiltration through deteriorated paint and putty. This can be avoided by careful painting and using a good quality wood preservative.

Repairs to old sash windows as well as window frames made of casement must be done with care and with minimal disruption. It is possible to Upvc door repair many traditional timber window installation cambridge designs without having to remove the frame. This is a must whenever it is possible. Remove loose or peeling paint and then lightly sand the surface to improve the "key" of the surface. This will allow the new coating to adhere better. It is important to avoid stripping old paint layers that may have historic value and if they are present it is recommended that a study of the paint be conducted.

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

Replacement of traditional windows using PVC-u can be a tempting option, especially when the installer offers a 'one stop shop' installation service that can handle both removal and replacement within the span of a day. It is important that the installers of replacement windows are aware of the history and design of traditional timber frames. This will enable them to make the right suggestions for energy efficiency improvements and other technological upgrades that do not alter the character of a historic building. Anyone who installs replacement windows should be registered with a Competent Persons Scheme such as FENSA. This will ensure that the replacement windows are approved as a suitable solution under Building Regulations. A skilled carpenter can put in PVC-u Windows that are sympathetic to the original character of the building. This is particularly true where windows are situated in listed buildings and conservation areas.