What Is Cambridge Window? To Utilize It
Maintaining Timber Windows
A well-maintained and maintained timber window is a crucial element of the historic fabric of a building. It reflects, in various degrees, the materials and technologies of the time in which it was constructed, as well as the architectural style and craftsmanship.
When possible, repairs should be done in-situ. The repair system that is based on resin can be used to repair the most damaged areas of decay without removing the whole window.
Durability
Timber windows were built to last hundreds of years. They do require some maintenance to ensure they look good. Maintenance tasks include repairs to sash cords, retightening of pulleys for sash and painting. The need to upgrade windows made of timber to increase efficiency in energy use is also growing. This can include replacing old glazing units, fixing the window rebates that are in place or installing new cills to improve air seal.
The deterioration of paintwork is a major problem with traditional windows. This is particularly important when windows made of sash are involved because the gaps between the sashes can be extremely wide. In these instances water can enter the paint film and cause rotting to the wood or putty underneath. Weather conditions that are not ideal can accelerate the decay. To prevent this, windows should be regularly painted with an exterior wood paint that is suitable.
Corroded areas should be repaired using resin-based products. This will ensure the maximum amount of the original fabric is retained. It is essential to limit the number of holes drilled into the frame in order to allow cable access, since they can let in moisture and cause decay.
Another issue with older windows is structural movement in the wall that can lead to deformation of the frame and the sash. This could result in sash not fitting correctly and jamming or sticking into the opening, or breaking glass. Most often, this is corrected by fitting 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 prevent movement between the existing and new work.
There are a variety of companies that manufacture Boston pattern wooden sash that fit in with the majority of openings. They are available in a variety of sizes and finishes that will meet the requirements of modern homeowners. Together with quadruple draught strips and improved thermal insulation, these new sash can make a substantial difference to the energy efficiency of a home.
Aesthetics
Many old wooden windows have an excellent aesthetic value because they typically illustrate, in some way the materials and techniques and architectural style of the period from which they date. They may also have significant historical value in their own right. This is particularly true for early windows that were not glazed in timber-framed buildings, where the majority were series of openings in structural frames subdivided horizontally by mullions and vertical iron or wood bars to keep out intrusions.
Traditional window joinery made from timber is a beautiful element of a structure and is crucial to keep it looking good. It is essential that any decay caused by moisture penetration should be stopped as soon as it is identified. This is best accomplished by applying a thorough coat of paint, particularly in areas that have already suffered damage or degradation. It is advisable to use paints that are specifically designed to be used part of a system (primer as well as undercoat, finish and primer) and to follow the manufacturer's recommendations in relation to preparation and the amount of coats required at each stage.
The fungus responsible for wet rot can quickly spread in old timber windows. To stop this from happening, remove 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 that is being removed, to avoid the possibility of differential movement.
In the late the 17th and early the medieval periods, glass became cheaper and more abundant, so that the glazed openings in timber-framed buildings gradually became sophisticated, with tracery made of wood as well as moulded mullions and projection cills. In recent years, glazing was fixed to rebated frames with glazing sprigs, not lead cames. This method of glazing is not just less prone to leaks but also allows for more expansive, clearer sheets of glass to be used in windows than would have been possible without the need for lead lights.
Energy efficiency
Traditional timber windows offer a good energy performance due to their thickness, multi-layer construction and very careful attention to detailing. The large glass areas, deep projecting cills and large glazing areas reduce air infiltration. With secondary glazing and draughtproofing, the windows can be improved to improve their energy efficiency. It is crucial to remember that these measures must be considered when it comes to the overall appearance and integrity of the original windows.
It makes sense to fix or upgrade windows, rather than replacing them, particularly when improvement in thermal efficiency can be made by simple repairs. Older windows are usually of historical value, as they reflect a variety of technological advancement and changes in architectural style. Most people think that the windows will need to be replaced in the near future. However, many of them are still in service for 150, 200 or even 250 years with proper maintenance.
It is crucial to understand that decay problems in traditional timber windows are avoidable with prompt and thorough repairs. It is also essential to spot damp issues and address them promptly to avoid major damage. The early deterioration of paint could be a problem as it allows moisture to penetrate into the wood, causing wet rot. This damage is often not evident until the paintwork becomes wavy or cracked however, it can cause serious structural damage and lead to further decay.
A paint of good quality will prevent moisture penetration. It is also essential to keep the paintwork spotless to avoid mould and condensation. Modern synthetic paints are problematic because they are water-resistant, and can cause mildew growth within the window frame.
Most older windows were made from sapwood-rich wood. The timbers will deteriorate rapidly if exposed to wet weather, but can be protected by a thorough treatment of preservative before they are used. It is essential to select the right kind of wood for the site and climate, as these factors will affect the durability of the joinery. Local window manufacturers provide a wide range of timber sash which can be customized to fit historic openings. They can be built to the standard Boston pattern dimensions or to custom dimensions that are compatible with the architectural style of historic buildings.
Maintenance
The lifespan of windows made of timber can be extended by regular inspection, careful redecoration and timely repair. The most common cause of decay is moisture infiltration through the deterioration of paint and putty. This can be prevented by using a high-quality wood preservative and painting the wood thoroughly.
Repairs to old sash windows and casement window frames should be handled with care and with minimal disruption. It is possible to fix several traditional designs of timber windows without having to remove the frame. This is a must whenever it is possible. Paint that is peeling or loose should be removed carefully 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 and if they are present, it is recommended that a study of the paint be conducted.
Where a section of timber is rotten, the best course of action is to remove the rotted material and replace it with spliced-in timber inserts that are shaped to match existing profiles. The timber inserts should be treated with a wood preservative, and the joint between masonry sub-cill and timber cill should be sealed.
It is tempting to replace traditional windows with PVC u, especially if the installer offers an all-in-one installation that includes both removal and replacement in a single day. However, it is essential that the person installing replacement windows has a full knowledge of the structure and history of traditional timber frames. This will enable them to make the right recommendations for energy efficiency improvements and other technical improvements that won't harm the historical character of a building. Those providing replacement windows should be registered with a Competent Persons Scheme like FENSA. window repairs cambridge will ensure that the replacements are deemed as a suitable option under Building Regulations. A skilled carpenter can put in PVC-u windows that conform to original building's character. This is especially true where windows are situated in listed buildings or conservation areas.