5 Cambridge Window Instructions From The Pros

Maintaining Timber Windows

A well-maintained timber window is an important element of the historical fabric of a structure. It illustrates in varying degrees the various materials and techniques, craftsmanship and architectural taste of the period that it was built in.

If possible, repairs should be made in-situ. Repairing the most deteriorated areas of decay can be done using proprietary resin-based systems.

Durability

Timber windows were designed to last for hundreds of years. But, they have to be maintained to keep them looking good and functioning properly. Maintenance tasks include repairs to sash cables, retightening of sash pulleys and painting. There is also a rising demand for upgrading timber windows to increase energy efficiency. This may mean replacing old glass units, fixing the window rebates that are in place, or installing new cills the air to seal better.

The deterioration of paintwork is a major problem with traditional windows. This is especially true when sash windows are concerned because the gaps between sashes may be very large. In these instances water can get into the paint film and cause rotting of the putty as well as the wood beneath. The rotting process can be made worse due to weather conditions that are poor. To prevent this, windows should be regularly painted with a suitable exterior wood paint.

In addition to repainting, areas that have corroded need to be repaired with a resin-based repair product. This will ensure that the maximum possible amount of the original fabric is retained. It is crucial to reduce the number of holes made in the frame 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 cause deformation of the frame and the sash. This could result in sash not fitting correctly, jamming or sticking in the opening, and even broken glass.  window supplier cambridge  can be fixed frequently by fitting new sash frames constructed of slow-grown deal (pine), or oak. The cill needs to be constructed of a durable hardwood, like oak, in order to prevent any shifting between the new and old work.

There are now several companies that produce Boston pattern wooden sash that fit into the majority of existing openings. They are available in various sizes and finishes that meet the requirements of modern-day homeowners. Combined with quadruple draught strips and improved thermal insulation, these new sash options can make an enormous difference to the energy efficiency of a house.

Aesthetics

A lot of old timber frames possess a dazzling aesthetic appeal, since they display, in a certain form, the materials, technology, and architectural taste from the time period they were made. They may also have a significant historical significance in their in their own right. This is particularly true of early unglazed window openings in timber framed buildings which were merely a series of openings within the structural frame sub-divided horizontally into mullions, and vertically into wood or iron bars to keep out intruders.

It is important to maintain the appearance of traditional timber window joinery. It is vital that any decay resulting from moisture penetration should be stopped as soon as it is identified. It is best to do this with thorough painting, especially where there is damage or degradation. It is recommended to use paints designed to be used in a set (primer undercoat and finish), and to follow the manufacturer's guidelines for preparation and number of coats at each stage.

Wet rot is a frequent issue in older timber windows. The best method to stop it from developing is to remove any damaged or rotten sections as soon as you can to prevent the spread of the fungus that causes it. Replace rotting wood with slow-grown deal (pine), and if possible, the same type of wood that is being removed to prevent any differential movement.

In the late period of the 17th century and the middle of the medieval period, glass became less expensive and more abundant, so that the glazed openings in timber-framed buildings gradually became more sophisticated, with tracery made of wood moulded mullions, moulded mullions, and deep protruding cills. In recent years, glazing was fixed to rebated frames with glazing sprigs instead of lead cames. This method of glazing not only makes the windows less likely to leak, but also allows for more clear glass sheets to be utilized than would have been possible without the use of leaded lights.

Energy efficiency

Traditional timber windows are energy efficient due to their thickness, multilayer construction and attention to the smallest of details. The large glass areas, deep projecting cills, and the large glazing areas reduce air infiltration. The windows can be modified to improve their energy efficiency through draughtproofing and secondary glazing. It is crucial to keep in mind that these measures need to be considered when it comes to the overall integrity and appearance of the original windows.

As a result, retaining the existing windows from the past that are in need of repair rather than replacing them is logical, particularly when their thermal enhancements can be achieved inexpensively with simple repairs and upgrades. The windows of the past often have a historical value that shows a variety of technical development and changes in architectural tastes. Most people think that these windows will need to be replaced in the near future. However, they will last for 150,200, and even 250 years if they are maintained with proper maintenance.

It is important to recognize that decay problems with traditional timber windows can be avoidable with prompt and thorough repairs. Additionally it is crucial to recognize damp penetration issues and address them swiftly to prevent serious damage. Early deterioration of paint is a major problem because it allows moisture to penetrate the wood and cause wet rot. It is not uncommon for this issue to go unnoticed until the paintwork starts to crack or turn wavier. However, it can cause structural damage and further decay.

A good quality paint will prevent this moisture penetration. It is also important to keep the paintwork clean to avoid mould and condensation. The use of modern synthetic paints can be problematic because they are usually formulated to be water-resistant, and this can lead to the formation of mildew in the window frame.

The majority of older windows were constructed from sapwood-rich timber. The timbers will deteriorate rapidly if exposed to rain, however they can be protected with a thorough preservation process prior to use. It is crucial to select the right kind of wood for the site and climate, as these variables can affect the longevity of the joinery. Local window manufacturers make various types of timber sash that can be tailored to fit specific openings in historic buildings. They can be made according to the standard Boston pattern dimensions, or to custom sizes that are in keeping with historic buildings.

Maintenance

The life span of windows made from timber can be extended significantly by regular inspection as well as a careful redecoration and prompt repair. The primary reason for the decay is moisture infiltration through deteriorated putty and paint. This can be prevented by thorough painting and the use of an excellent wood preservative.

It is crucial that repairs to old sash or casement windows are well executed and completed with the minimum disturbance. A lot of traditional wooden window designs are repairable without removing the frame, and this option should be taken whenever feasible. Peeling or loose paint should be removed with care and lightly sanded to improve the  key of the surface and allow for a better adhesion of the new coating. Care should be taken to avoid stripping old paint layers that could have historical value and if they are present, it is recommended that a paint analysis 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 inserts that are shaped to fit the existing profiles. The wood that is inserted should be treated with a wood preserver and the connection between the timber cill and the masonry sub-cill should be sealed.

It can be tempting to replace traditional windows with PVC u, particularly when the installer offers an  all-in-one installation that includes removal and replacement within a single day. It is crucial that installers of replacement windows are aware of the history and design of traditional timber frames. This will allow them to make the appropriate suggestions for improvements to energy efficiency and other technological upgrades that will not harm 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 in accordance with Building Regulations. It is, of course, possible for a skilled and experienced carpenter to install PVC-U windows that are sympathetic to the the original building. This is especially true when the windows are located in listed buildings or conservation areas.