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Maintaining Timber Windows

A well-maintained wooden window is a crucial part of a historic building. It reflects, in various degrees, the materials and technologies of the time period it was constructed, the architectural style and craftsmanship.

When repairs are feasible to windows that are already in use should be done in-situ. Proprietary resin-based repair systems can be used to fix the most deteriorated areas without removing the whole window.

Durability

The timber windows in many historical structures were designed to last for a long time. But, they have to be maintained to keep them looking good and functioning properly. Maintenance tasks include repairs to sash cables as well as tightening the pulleys on sash, and painting. There is a growing need for upgrading timber windows to increase energy efficiency. This can involve replacing old glass units, fixing the window rebates that are in place or putting in new cills for better air sealing.

The corrosion of paintwork is a major problem with traditional windows. This is particularly important when sash windows are involved as the gaps between the sashes can be quite large. In these circumstances water can get into the paint film and cause decay of the putty and the wood beneath. The rotting can be exacerbated due to weather conditions that are poor. To prevent this from happening, windows need to be regularly painted with an exterior wood paint.

In addition to repainting, areas that have corroded must be repaired using a resin-based repair product. This will ensure the maximum amount of original fabric is retained. It is crucial to reduce the number of holes that are made into the frame to allow cable entry, since they can let in moisture and cause decay.

The structural movement of the wall can cause distortions in the frame and sash. This could result in sash no longer fitting correctly or sticking or jamming into the opening and broken glazing. Often this can be corrected by the fitting of new sash boxes that have been constructed from slow-growing deal (pine) or oak. The cill should be constructed of a durable hardwood, such as oak, to prevent shifting between the new and older work.

To alleviate this issue There are a number of companies who make Boston pattern wooden sash that can be fitted into most openings. The sash is available in a variety of sizes and finishes that suit the needs of modern homeowners. Combined with quadruple draught strips and a better thermal insulation, these new sash can make a substantial difference to the energy efficiency of a home.

Aesthetics

Many old timber windows have a high aesthetic value as they often illustrate, in some way the materials and technologies and architectural style of the time in which they date. They may have significant historical significance on their own. This is especially true of early windows that were not double glazing repairs glazed door repairs (http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1829154) in timber-framed buildings, where the majority of them were series of openings within structural frames subdivided horizontally by mullions, and vertically by wood or iron bars in order to keep out intrusions.

Traditional window joinery made from timber can be a highly decorative feature of a building and is crucial to maintain its appearance. It is vital that any decay caused by water penetration is removed as soon as it is identified. It is best to do this by thorough painting, especially if there has been damage or deterioration. It is best to choose paints that are intended to be used in a set (primer undercoat and finish), and to adhere to the manufacturer's recommendations for preparation and number coats at each stage.

The fungus responsible for wet rot can spread quickly in old windows made of timber. To prevent this, get rid of any damaged or rotten components as promptly as you are able to. The replacement of rotting timber should be carefully undertaken by using a slow-growing deal (pine) and, if possible, the same species as that which is being removed to avoid shifting between the new section and existing timbers.

In the late medieval and 17th century periods glass became cheaper and more abundant, so that the glazed openings in timber-framed buildings gradually became more sophisticated, with tracery made of wood as well as moulded mullions and protruding cills. The glazing was increasingly placed within frames with rebates and then pinned by 'glazing sprigs' rather than into lead cames. This method of glazing is not only less prone to leaking but it can allow for more expansive and clearer sheets of glass to be used in windows than would be possible without the need for lead lights.

Energy efficiency

Traditional timber windows are energy efficient because of their thickness and multilayer construction as well as care for particulars. The large glass surfaces, the deep projection cills and wide glazing areas reduce air infiltration. The windows can be modified to increase their energy efficiency with draught-proofing and secondary glazing. It is crucial to keep in mind that these measures must be considered when it comes to the overall appearance and integrity of the original windows.

It is sensible to repair or upgrade existing historic windows rather than replace them, especially when the improvement in thermal efficiency can be achieved through simple fixes. Historic windows often have an historic value that shows a variety of technological advances and changes in architectural taste. Many people believe that these windows will have to be replaced in the near future. However, many of them can still provide service for 150, 200, or even 250 years if you take care of maintenance.

It is important to recognise that the decay problems that are typical of windows made of timber can be avoided by regular maintenance and timely repairs. Additionally it is vital to recognize damp penetration issues and fix them promptly to prevent serious damage. 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 becomes wavy or cracked, but can cause significant structural damage, and could lead to further decay.

A good paint will block moisture penetration. It is also necessary to keep the paintwork clean in order to prevent mould and condensation. The use of modern synthetic paints could be a problem, as they are often formulated to be water-resistant, and this can cause the growth of mildew in the window frame.

The majority of older windows were manufactured from timber containing a high proportion of sapwood. The timbers will deteriorate quickly when exposed to moist weather conditions, but they can be protected by a thorough preservative treatment before they are used. It is crucial to select the right type of wood for the site and the climate, since these factors will affect the durability of the joinery. Local window manufacturers produce various types of timber sash that can be customized to fit specific openings from the past. They can be made according to the standard Boston pattern dimensions or to specific sizes that are in keeping with historic buildings.

Maintenance

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

Repairs to old sash windows and window frames made of aluminium casement windows cambridge should be handled with care and with the least amount of disruption. It is possible to repair several traditional designs of timber windows without taking the frame off. This should be done whenever possible. Remove peeling or loose paint and lightly sand the surface to improve the 'key" of the surface. This will allow the new coating to adhere better. It is essential to not remove old paint layers, which may have historical significance.

If a piece of wood is rotting, the best solution is to take it off and replace it with timber inserts shaped to match the existing profiles. The inserted wood should also be treated with a wood preserver, and the junction between the timber cill and the sub-cill of the masonry should be sealed.

It can be tempting to replace traditional windows with PVC u, particularly if the installer offers an all-in-one installation that includes both replacement windows cambridge and removal in one day. It is important that the installers of replacement windows have a thorough understanding of the history and construction of traditional timber frames. This will enable them to make the appropriate recommendations for energy efficiency improvements as well as other technological advancements that won't affect the appearance of a building that is historic. Those who provide replacement windows should be registered under a Competent Persons Scheme, such as FENSA. This will ensure that the replacements are deemed acceptable by the Building Regulations as a suitable option. It is quite possible for a skilled and experienced carpenter to install PVC-u windows that are sympathetic to the character of the building originally. This is especially true when windows are installed in listed buildings or conservation areas.