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How to Restore Timber Sash Windows in cambridge double glazing

Many homes in cambridge windows and doors have sash windows that are traditional and homeowners are proud of how they appear. However, sash windows can become stuck and difficult to open or close. This is usually due moisture which can cause the wood to swell.

Box sash windows were historically operated by chains or cotton cords as well as lead weights. Modern sash windows come with hidden springs to overcome this problem.

1. Aesthetics

Contrary to PVC-u windows which are manufactured according to imperial sizes that are modular, timber sash windows can be restored to their original dimensions. This lets the restoration be in line with modern energy requirements while complying with conservation area regulations. It also provides windows with a superior appearance than uPVC alternatives.

Sliding frames for windows made of sash were originally intended for large structures or public buildings. However, this changed when production became cheaper and artisans could produce larger frames with larger glass. By the late 18th century windows made of sash were the predominant design of wood in the majority of British properties. Sash windows were simple to operate and let light into rooms without the need for curtains.

Early windows were simple glass but by the 17th century sash windows began to become more decorative, with coloured glazing bars and moulded mullions. They were expensive at the time but as glass production became more efficient and less expensive, they became a part of many of the period homes.

In the 19th century, it was possible to make large, sturdy glasses that didn't need support bars. This allowed the frame to be enlarged and, in turn, gave a better view. This was an important advancement.

The introduction of the double-hung sliding sash is another important improvement that was made at the end of the I920s and at the beginning of the I930s. This allowed both the lower and upper sash to be opened simultaneously and also improved the ventilation of buildings.

The most common type of sash is made of slow-growing deal (pine) but oak was used in the more expensive buildings as well as in earlier examples. A parting bead separates the two sashes and it is essential that it is well maintained to prevent rattles and draughts. It is also crucial that the idler and sash pulley wheels are kept in good shape as they assist in operating the window maintenance.

2. Energy efficiency

Sash windows were replaced by hinged casements as clearer and larger sheets became available. They were coated with plate glass that was set in timber frames with rebates and secured with glazing sprigs, with putty on both sides to ensure they were watertight. This form of glass gradually replaced the leaded light bulbs.

The introduction of sashes led to an need for a greater variety of ironmongery, with the basic fittings being brass pulleys as well as lead (and later cast iron) weights, sash stoppers shutter hinges and knobs and a variety of fasteners that secured the sashes into place. They were often decorated with motifs, inscriptions, and engravings that identified the maker.

Sash windows can be very energy efficient when they are maintained regularly. But, if you don't maintain them, they can become draughty and let in cold air. Paint and putty may cause draughts. This can be corrected using wood-to-timber repair products that are specifically designed for this purpose.

The market for replacement windows is based heavily on the belief that old windows are beyond repair and therefore cannot be maintained economically. However, they can easily be maintained with a little attention. However, repairs to these windows can be costly and cause considerable disruption to the home. To avoid this homeowners, many choose to replace their windows with PVC-u windows from one of the many 'one stop shop' installation companies. They can replace all windows in a home in one day, saving time and avoiding the need for various tradesmen to coordinate. These windows can be fitted with 'energy-saving double-glazing to attain higher energy ratings than the traditional windows made of sash. However these double-glazed units are unable to duplicate the proportions and section of historic timber sashes.

3. Security

It is possible to secure traditional windows without compromising their style. A variety of ironmongery types can be fitted with sash chains, mortice bolts and locks for sash. These can be installed so that the window remains open to allow ventilation or for cleaning. These products are often not noticeable since they are designed to complement sash windows. They can be used in conjunction with traditional sash window catch. They are best replaced with more robust versions, such as ones that have double screws or spring levers to decrease the risk of being struck by hammers.

Sash-window And door repair near me frames were typically constructed from slow-growing deal or, in the more elegant homes made of oak. Where glazing bars have survived they should be preserved, and if it is possible, the timber of the cill should be replaced with the same wood. PVC-u companies often offer a one stop shop installation service, removing and replacing windows on a complete home in one day, without the need to involve other tradespeople or coordinate visits from a number of different suppliers.

4. Ventilation

When sash windows first introduced in the 17th century they allowed a substantial amount of light to flood into structures. At the end of the 18th century, they had been modified so that more light could be let into the rooms. Larger glass panes were also made. The result was a lighter look and windows with more elegance.

Sash windows were introduced, which required a new type of ironmongery. Early pulleys were constructed from wood. Later Victorian ones were made of brass or a mix of leaded and wood. There were also a variety of kinds of shutter hinges and knobs. The ironmongery components should be kept and cleaned so that the quality of their design can be appreciated.

Timber windows require careful maintenance to ensure they remain in good order. A lack of regular attention can lead to:

sashes that no longer slide easily.

Holes in the frame which allow water to enter and cause damage and decay.

Water can penetrate the putty and cause decay to the frame or cause cill.

In the I920s and I930s, steel casement windows grew in popularity due to their strength slim and inexpensive, and complemented the vogue for healthy living. Studies have shown that softwood sash windows are just as effective as PVC-u windows, and may even be more attractive.

The industry of replacement windows has done a great job convincing homeowners that their old windows were decayed drafty, noisy and beyond repair. Many old timber windows can be repaired and used for many more years with minor repairs.

5. Maintenance

A traditional sash window seal replacement near me requires regular maintenance and inspection. Inability to keep up with this could result in the sash cords breaking, a lot of wear on the glazing bars, and degradation of the paint and putty. The removal of the sashes can also result in structural movement within the frame that causes the sash to become misaligned and unable to close correctly. The sash can also be stuck in its open position, allowing water and draughts into the property.

Moisture penetration is the most common cause of damage to windows made of timber. This can be prevented by regular repairs, thorough painting and removing the cause of dampness. The paint can be removed to expose the soft, decaying wood. Any rotten sections of timber should be cut out and the affected part carefully scarfed or pieced in using replacements made of the same kind of timber as those remaining. This method of repair increases the amount of fabric used in the first place and is one of most non-invasive methods to treat wood-to-timber rot.

The use of a resin-based wood consolidant is an alternative to the traditional method of staining and sanding. It is brushed on the surface of the wood to stabilize it and shield it from further damage. It is particularly beneficial in the treatment of pulleys and sash cords which help prevent breakage.

It is important that any old ironmongery such as sash stay and latches be kept and restored instead of replacing them. These items are difficult to replace without harming the quality of the original design. It is also recommended that modern aluminium fittings like sashlifts and chainstays, are avoided since they could cause corrosion and deterioration of timber frames and sashes.