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Maintaining Timber Windows

A well-maintained timber window is a crucial element of the historical fabric of a building. It reflects, in various degrees, the materials and technologies of the time period it was made, the design and craftsmanship.

If repairs are possible to existing windows are required, they should be done in-situ. Proprietary resin-based repair systems can be used to fix the worst areas of decay without removing the entire window.

Durability

The timber windows in many historical structures were designed to last for a long time. However, they do need to be maintained to ensure that they look good and functioning properly. The most common maintenance tasks are upvc door handle repairs near me to sash-cords as well as tightening sash pulleys and painting. The demand for upgrading timber windows in order to improve energy efficiency is also growing. This can involve replacing old glazing units, fixing the window rebates that are in place or putting in new cills the air to seal better.

One of the major issues with traditional windows is damage caused by the corrosion of the paintwork. This is especially true when it comes to sash windows because the gaps between sashes can often be extremely large. In these cases water can enter the paint film and cause rotting to the putty or wood beneath. The rotting can be exacerbated by poor weather conditions. To prevent this windows from becoming rotten, they must be regularly painted with an exterior wood paint that is suitable.

The areas that are damaged should be repaired with resin-based products. This will ensure that the maximum amount of original fabric is retained. It is important to minimize the number of holes made into the frame to allow cable entry, because they could let in moisture and cause decay.

The structural movement of the wall could also cause deformations in the frame and sash. This could result in sash no longer fitting correctly, sticking or jamming in the opening and cracked glazing. This can be fixed frequently by putting in new sash frames made of slow-grown deal (pine), or oak. The cill must be made from a sturdy hardwood, such as oak, in order to prevent any differential movement between new and older work.

To help reduce this problem, there are now a variety of companies that make Boston pattern wooden sash that can be fitted into most openings. These sash are available in a range of sizes and finishes to meet the needs of today's homeowner. These new sash, when coupled with quadruple draft strips and improved thermal insulation can make a significant difference to the efficiency of your home's energy usage.

Aesthetics

Many old timber windows have a great aesthetic value since they usually illustrate, in some way, the materials and technology and architectural style of the time from when they were built. They could also have a significant historical significance in their own right. This is especially true for early unglazed window openings in timber framed buildings which were merely a series of openings in the frame, which were divided horizontally into mullions, and vertically into iron or wood bars to deter invaders.

Traditional timber window joinery can be a stunning feature of a building and it is important to keep its appearance. When you spot any decay caused by moisture penetration it is crucial to stop it. It is recommended to do this by thorough painting, particularly if there has been damage or deterioration. It is recommended to choose paints that are intended 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 common problem in older timber windows. The best way to stop it developing is to remove any damaged or rotten sections immediately to prevent the spread of the fungus responsible for it. The replacement of rotting wood must be done with care with a slow-growing deal (pine) and, if feasible, the same species as that which is being removed to avoid shifting between the new section and existing timbers.

In the late period of the 17th century and the middle of the medieval period, glass became cheaper and more abundant, and the openings for glazed glass in timber-framed buildings gradually became sophisticated with wooden tracery as well as moulded mullions and projecting cills. In recent years, glazing was pinned into frames that were rebated with glazing sprigs rather than lead cames. This method of glazing is not just less prone to leaking but it also allows more expansive clearer, more transparent sheets of glass to be used in the windows than would have been possible without the need for lead lights.

Energy efficiency

The traditional timber windows are energy efficient because of their thickness and multilayer construction as well as attention to the smallest of details. They also feature large glass areas as well as deep projecting cills that reduce air infiltration. The windows can be made to increase their energy efficiency by draught-proofing and secondary glazing. However, it is important to keep in mind that these measures should be viewed in the context of the overall appearance and integrity of the original window.

So, retaining old windows that require repair instead of replacing them is sensible, particularly when their thermal enhancements can be made cost-effectively through simple repairs and upgrades. Historic windows often have historical significance that shows a variety of technological advancement and changes in architectural taste. Most people think that these windows will have to be replaced in the near future. However, many of them will last for 150,200, and even 250 years with proper maintenance.

It is important to recognize that decay issues with traditional timber windows are avoidable with timely and thorough repairs. Additionally, it is essential to recognize damp penetration issues and address them swiftly to prevent serious damage. Early deterioration of paint is a major issue, as it allows moisture to penetrate the wood and cause wet rot. This type of damage is typically not noticed until the paintwork is wavy or cracked but it can cause severe structural damage, and could lead to further decay.

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

The majority of older windows were constructed from sapwood-rich wood. These timbers are susceptible to deterioration quickly when exposed to wet weather conditions, but they can be protected with an extensive preservative treatment prior to when they are put to use. It is important to choose the appropriate type of wood for the site and climate, as these factors can affect the durability of the joinery. Local window manufacturers have an array of sash timbers that can be customized to fit historic openings. They are available in the standard Boston pattern or in custom sizes to suit historical buildings.

Maintenance

The lifespan of windows made of timber can be extended considerably by regular inspection carefully redecoration, and timely repair. The primary cause of wood decay is the penetration of moisture through deteriorated paint and putty. This can be prevented by using a high-quality wood preservative and thoroughly painting the wood.

It is crucial that repairs to the old sash and casement windows are done correctly, and carried out with the minimum disturbance. It is possible to repair the majority of traditional wooden window designs without having to remove the frame. This should be done whenever possible. Loose or peeling paint should be removed carefully and sanded lightly to improve the "key" of the surface and allow for an improved adhesion of the new coating. Be careful to avoid stripping old paint layers which may have historic value If these are present it is recommended that a paint analysis be carried out.

If a piece of timber has begun to decay, 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 inserts should be treated with a wood preservative, and the joint between the masonry sub-cill and the timber cill should be sealed.

Replacement of traditional windows using PVC-u can be an appealing option, particularly when the installer offers an "all-in-one" installation that handles removal and replacement in one day. However, it is vital that the installer of replacement windows has a complete understanding of the construction and history of traditional wooden frames. This will allow them to make the right recommendations for energy-efficiency improvements and other technological upgrades that won't affect the appearance of a historic building. The plastic window Repair installers who provide replacement windows must be registered with a Competent Persons Scheme like FENSA. This will ensure that replacement windows are deemed acceptable in accordance with Building Regulations as a suitable alternative. A skilled carpenter is able to install PVC-u windows that conform to original building's character. This is especially relevant when windows are in conservation areas or listed buildings.