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Sash Windows Repair
Sash windows combine modern technology with a traditional look. These windows are 100% draught proof and need zero maintenance, other than cleaning them every week.
A lack of maintenance can cause sliding, loss of putties on the glazing and decay at the junction of the cill and pulley stile. All of these issues can be addressed on-site or in a workshop.
Replacement of cords for sash
A lack of regular maintenance can lead to rattles, draughts and issues with the opening and closing of windows. It can also cause structural movements within the frame, and can cause sashes to be deformed. The damage can cause the putty to break down and the paint to peel, allowing water in the wood, creating decay. Sash cords may also become stiffer and more vulnerable to breaking. Fortunately, a lot of these issues are in fact fixable.
The wood used in older windows made of sash has a greater density than the wood used in modern replacements. This can make it last for many centuries. As with any material that is not regularly maintained, it will deteriorate.
To keep sash windows in good working order the cords should be tight and the wood waxed regularly. The cords for sash windows can be made of cotton, jute or nylon. Metal chains can be used to replace the sash cords. Ideally, the new cords should be fed over the pulley wheels using an adsorbent to create a separation between the two sashes. The cords are then tacked to the weights and the counterweights can be adjusted to balance the sashes.
To prevent damage, it is best to replace the pulleys with ones that are similar to the original. Weights can be made of iron, brass or a mix of the two. Often, the replacements are smaller than the originals, which can cause problems with operation. The sash must be opened in the correct position prior to replacing the counterweights, and it is essential to be able to shut the window without closing it.
Ironmongery can be used to enhance security, make a sash-window draft-proof, while still allowing for ventilation and cleaning. There are sashlocks, double screws and anti-lift devices. These are relatively cheap and can be installed on a traditional window and still preserve its historical character. They are not as noticeable as more obvious security features such as the sash window chain or sash catch.
Replacement of sash weights
A sash window is a double-glazed sliding window that can be raised or lowered to open or close the window. It is secured by pulleys or sash cords and a split bead. The sash cords as well as the weights need to be kept in good condition to ensure that the window stays in position. If a sash is too heavy or sagging, it could lead to broken sash cables or loose beading. The best way to keep a sash window in proper condition is to have it properly maintained and repaired regularly.
In many cases older windows can be repaired without removing them from the frame. In cambridge door and window , the casing and sash can be removed from an assembly line or joiner's workshop and repaired. This type of repair allows for maximum preservation of the original fabric and prevents creating problems like draughts, or rot in the wall frame. The damaged timber is then strengthened using a resin consolidant or filler to enable the window to be fully functional again.
The wood sash was milled up to the end of the eighteenth century using slow-grown deal (pine). They tend to be more dense and durable than modern wood. By the late eighteenth-century, window dimensions had also been standardized. Local window manufacturers have a line of Boston Pattern sash that will fit the majority of old windows. Replacement windows for sash windows that are not sized to conform to these standards will require a custom-sized sizing of the window framing members, which can detract from the historical character of the building. In the same way, replacement ironmongery must be carefully chosen to ensure that the new pieces function well while retaining the historical accuracy. This can be a difficult task due to the many fasteners that are found on windows with sash are often covered in layers of varnish or paint. But, removing these layers of paint can reveal the intricate craftsmanship and engineering that went into the initial window.
Replacement of sash catch
A Sash window is a standard type of window that is made up of movable glass panes within the frame. It is usually divided into two parts, namely the top and bottom sashes. It is moved using cords, weights or more recently, spiral balances. Based on the design of your window, you can open the sashes by sliding them up or down. They are often also secured at the mid rail using handles to hold them in place.
If a sash is damaged, it can cause problems for your home, like water leaks and difficulty moving windows up and down. It is important to know when you should replace a sash so you can make an informed decision.
You can determine if your window sash is in need of replacement by looking at it for signs of decay. It could be a sign of mold, mildew, or scratches in the wood. You can also test the wood for moisture, which means it's time to replace the sash.
The components of the sash may be damaged through inadvertent use or lack of maintenance. For instance, holes that are drilled through the frame for cable entry may let water in and contribute to rot. Other symptoms of a sash in need of replacement include paint loss, a broken cord to the sash, and the sash no longer fits well.
Many homeowners are worried about the cost of replacing their sash windows, but it's important to know how much your window's sash value is. In many cases, it is possible to salvage the timber and then repair or replace the sash, instead of tearing out the entire window and re-starting. This can help you save significant amounts of money and also maintain your historic windows. To avoid costly errors it is crucial to speak with a professional prior to making any repairs or replacing your windows. They will also provide advice on the best solution to fit your home based on your budget and your specific needs. They can provide you with an estimate of what it will cost to replace or repair your sash.
Replacement of the sash pulleys
Sash windows usually come with a complicated and delicate mechanism that requires regular maintenance and repairs. If they are not maintained, they could be damaged and difficult operate. They can also be draughty and dangerous, creating a health and fire risk. Many older sash windows can be fixed at a low cost and without damaging the structural integrity of the building. They can be made draught-proofed and secure and conform to insurance standards. This way they can be cherished for generations to come.
Traditional timber frames are prone to damage from decay and weathering. The cill, or lower part of the window frame, is particularly susceptible to water penetration. It can be strengthened by metal angle brackets that can be placed over the existing sub-cill. New cills can also be made from a durable hardwood like oak. To keep as much of the original fabric as is possible it is essential to be careful when putting in fresh timber.
In the eighteenth-century the frames for sash windows were constructed primarily of slow-growing pine and in some cases from oak. They were designed to last for a long time, and are now considered to be a significant feature of older structures. Repairing and replacing these sash windows should be done using the same type of timber to prevent shifting between the old and new components.
Ironmongery is crucial to the operation of double-glazed sash windows. This includes a brass or hardwood pulley, along with cast iron or lead weights shutter hinges, knobs and shutter hinges. All of them should be maintained in good working order and replaced or repaired whenever necessary. They can help keep the sash and casement in the right position and also prevent it from sticking or dropping. They can be used to open a sash windows to let air circulate or clean. A range of security fittings are available for sash windows, that are typically non-detracting and will not compromise the appearance of a period property. These include height restrainers and dual screws and anti-lift devices.
