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What Is The Cambridge Window Term And How To Use It
Maintaining Timber Windows

A well-maintained wooden window is a crucial component of a historical building. It reflects, in various degree the materials and techniques of the time period it was constructed, as well as the architectural style and craftsmanship.

When repairs are feasible to existing windows should be carried out in-situ. Repairing the most deteriorated areas of decay is possible with the help of specialized resin-based systems.

Durability

Timber windows were designed to last for centuries. However, they need to be maintained to ensure they look good and functioning properly. Maintenance tasks include sash cord repairs, retightening of sash pulleys and painting. The need to upgrade timber windows in order to improve efficiency in energy use is also growing. This could mean replacing old glass units, repairing the window rebates that are in place or putting up new cills for better air sealing.


One of the main issues with traditional windows is the damage caused by the corrosion of the paintwork. This is particularly important when windows made of sash are involved because the gaps between the sashes can be quite wide. In these instances water can get into paint film and cause rotting to the putty or wood beneath. Poor weather conditions can exacerbate the decay. To prevent this windows from becoming rotten, they must be regularly painted with a suitable exterior wood paint.

In addition to repainting, corroded areas should be repaired with the help of a resin-based repair solution. This will ensure that the maximum possible amount of the original fabric is preserved. It is also essential to minimise the number of holes you drill into the frame to allow cable entry since these could let in water and cause decay.

The wall's structural movement can also lead to deformations in the frame and sash. This can lead to the sash fitting incorrectly, jamming or sticking in the opening, or breaking glass. Most often, this is corrected by the fitting of new sash boxes that have been constructed from slow-growing deal (pine) or oak. The cill should be constructed from durable hardwood such as oak to prevent movement between the existing and new work.

There are a variety of companies that manufacture Boston pattern wooden sash to fit into the majority of existing openings. They are available in a variety of sizes and finishes to suit the needs of today's homeowner. Combined with quadruple draught strips and improved thermal insulation, these new sash options can make an enormous difference to the energy efficiency of your home.

Aesthetics

Many old timber frames have a high aesthetic appeal, since they display, in a certain form, the materials technology, the construction process, and the architectural style of the time they were built. They could have significant historical value as a set. This is especially true of early unglazed window openings in timber framed buildings where the great majority were simply a series of openings in the structural frame sub-divided horizontally into mullions and vertical wood or iron bars to deter intruders.

It is essential to preserve the appearance of traditional timber window joinery. It is essential that any decay caused by the penetration of moisture should be removed as soon as it is discovered. This is best accomplished by applying a thorough coat of paint, particularly in areas in which there is already damage or deterioration. windows cambridge is advisable to use paints that are specifically designed to be used part of the system (primer as well as undercoat, finish and primer) and follow the manufacturer's guidelines regarding preparation and number of coats required at each stage.

Wet rot is a common problem for old timber windows. The best way to stop it becoming a problem is to take out any damaged or rotten sections immediately to prevent the spread of the fungus that causes it. The replacement of wood that is rotting should be carefully undertaken using slow grown deal (pine) and, whenever feasible it is the same species as that which is being removed to prevent any movement differences between the new and old timbers.

In the late medieval and 17th century periods glass became cheaper and more plentiful so that glazed openings in timber-framed structures gradually became more sophisticated, with tracery made of wood, moulded mullions and deep protruding cills. In recent times, glass was pinned into frames that were rebated using glazing sprigs, not lead cames. This method of glazing not only makes the windows less likely to leak and break, but also allows more clear glass sheets to be utilized than would have been possible without the use of leaded lights.

Energy efficiency

Traditional timber windows have a good energy performance due to their thickness, multi-layer construction and very meticulous attention to detail. They also feature large glass areas and deep projecting cills that minimise air infiltration. With secondary glazing and draughtproofing windows can be upgraded to improve their energy efficiency. It is essential to keep in mind that these measures must be considered when it comes to the overall integrity and appearance of the original windows.

As a result, retaining existing historic windows that require repair rather than replacing them is sensible, particularly when their thermal enhancements can be made inexpensively with simple repairs and upgrades. The windows of the past often have an historic value that illustrates a variety of technological advancement and changes in architectural tastes. The pressures to replace such windows are typically based on the assumption that old windows will need replacement in the near future, however they are in a position to last for 150, 200 or even 250 years if properly maintained.

It is essential to understand that the decay issues that are caused by traditional timber windows can be prevented by thorough maintenance and swift repairs. It is also important to identify damp problems and correct them swiftly so that you can avoid serious damage. The early deterioration of paint is a major issue, because it allows moisture to penetrate the wood and cause wet rot. The damage is usually not evident until the paintwork is cracking or wavy but it can cause severe structural damage and can lead to further decay.

A good quality paint will prevent this moisture from entering. It is also necessary to keep the paintwork in good condition in order to prevent condensation and mould growth. The use of modern synthetic paints can be problematic since they are typically made to be water-resistant and this can result in the formation of mildew within the window frame.

The majority of older windows were constructed from sapwood-rich wood. These timbers can deteriorate quickly when exposed to rain, however they can be preserved with an extensive preservation treatment prior to use. It is also crucial to ensure that the kind of wood used is suitable to the location and climate conditions, as these elements affect the durability of the joinery. Local window manufacturers create various types of timber sash that can be tailored to fit specific historic openings. They are available in the standard Boston pattern or in custom sizes to fit historical buildings.

Maintenance

Regular inspection carefully redecorated, as well as timely repairs can prolong the lifespan of windows made of timber. The main cause of decay is the penetration of moisture through deteriorated paint and putty. This can be avoided by using a quality wood preservative and painting the wood thoroughly.

Repairs to sash windows that are old and frameless casement windows must be done with care and with the least amount of disruption. It is possible to fix several traditional designs of timber windows without removing the frame. This should be done whenever possible. Paint that is peeling or loose should be removed carefully and lightly sanded to improve the 'key' of the surface and allow for a better adhesion of the new coating. It is important to avoid stripping old paint layers that may have historic value and if they 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 remove the rotted material and replace it with spliced-in timber inserts that are shaped to match the existing profiles. The timber inserts should be treated with wood preservative. The junction between masonry sub-cills and timber cill should be sealed.

It's tempting to replace traditional windows with PVC u, particularly when the installer provides an installation that includes both removal and replacement in a single day. It is crucial that installers of replacement windows have a deep understanding of the history and design of traditional timber frames. This will enable them to make the right recommendations for energy efficiency improvements as well as other technological upgrades that won't harm the character of an historic building. The windows that are replaced should be registered with a Competent Persons Scheme such as FENSA. This will ensure that the replacements are approved 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 particularly true where windows are situated in listed buildings and conservation areas.