Sash Window Repair

Kellys Sash Windows are a family-owned business that specialises in sash window repair

We combine traditional craftsmanship, with the latest technologies, allowing us to design and make only the finest sash windows around

We restore or replace windows and doors in all styles of property. These properties include classical Victorian terraced houses, elegant town houses and many magnificent historical buildings.

Kellys Sash Windows specialise in the sympathetic replacement, restoration and repair of traditional timber. We offer a comprehensive service when it comes to sash windows, including draught sealing and full restoration services. Whether you’re looking for improvements to existing windows, such as the installation of energy-efficient double glazing, or the complete provision and installation of new portals, we can help.

For more than 30 years, we have serviced homeowners and construction professionals throughout London and the South, and our high-quality service is the most reliable and specialised around!

Due to many adverse effects, such as the weather, external damage or simply age – many older window installations tend to deteriorate to such a state that they let in draughts, cause rattling and rot to form. Not to mention causing heating bills to rocket! When things like this transpire in your property, you will need to get in touch with the experts for sash window repair.

Adding a touch of traditional elegance, the presence of repaired sash windows can provide a pleasing aesthetic touch to any property.

Sash Window Overhaul and Repair

This service is very popular and, when it is economical to carry out repairs, we will restore your windows and doors to their former glory, which comes with a 2 year guarantee.

The majority of this work takes place in private houses, although we also undertake work on commercial properties and buildings of special architectural interest.

Much can be done to improve the performance of a traditional timber window, whilst retaining the original style and aesthetic appeal.


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Contact us for FREE advice or a no obligation quote on 0800 634 8636.

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    Draught Sealing

    The gaps around the edges of a typical Sliding Sash Window, or indeed a Casement Window, can add up to the equivalent of a hole of around 150sq mm, or 6sq ins. Old windows often allow dirt, noise and draughts into your home, whilst expensive heat rushes out.

    The draught sealing system, combined with an overhaul, dramatically enhances window performance, giving new life and many years of additional service at a fraction of the cost of replacing the window.

    With over 20 years of experience in the industry, our attained knowledge allows us to combine traditional craftsmanship, with the latest technologies, allowing us to design and make only the finest sash windows around.

    By using craftsmen local to the area, we’re able to offer as swift and cost-effective a service as possible. We believe that this works to give our clients the peace of mind in knowing that their properties will be able to showcase traditional-looking windows but still be offered sufficient protection from harmful outside elements.


    Sash (and Casement) windows first appeared in the UK during the latter end of the 17th century and as such, have become a part of our heritage and a symbol of a property that may be considered historic. As such, this explains one reason why many homeowners are keen to preserve the design of the property.

    For many, these historical features are probably the reason why they decided to purchase the property in the first place, so their interest in retaining the look of it will be a vested one – after all, with good repair and restoration, the property will grow in value if ever the owner wishes to sell. Other buildings, especially ones designated for public use, will be listed and therefore, the original character must be retained by law.

    Of course, many others plan on dwelling in the property in the long-term, so maintaining a comfortable and aesthetically pleasing environment will help to make their experiences a happy one.

    Due to the age of a building, a sash window installation can go for many years without regular maintenance, which will leave the frame liable to suffer from deterioration. Aside from taking away the attractiveness of the property, deterioration of a frame will also hinder the functionality of the window, making it difficult (or easy – especially from the outside!) to open, leaving the home free to suffer from adverse effects.

    Older windows will be installed within wooden frames and whilst hard-wearing and durable, they will deteriorate and rot if not treated – this is the main issue that many older homes experience. As such, this is why it is vitally important to regularly maintain sash windows installations.


    Being specialists in sash window repair, restoration and maintenance, we are able to offer a wide range of solutions to issues that your home may be experiencing. Ultimately, the overall benefits that our sash window repair service can bring include:

    No more draughts

    Once repaired, the small gaps in between your windows and the building itself will be non-existent; not giving any elements from the outside an opportunity to affect the temperature inside of the building.

    No more rattling

    With no gaps present, the window installation will be secure and there will be no room for it to produce that rattling sound that’s often associated with old, poorly maintained buildings.

    Improved soundproofing

    Repaired sash windows will be able to better provide a barrier for any sounds that may emanate from either inside or outside, of the building. This is ideal if you live in an area that may experience noise, or if you produce noise in the building yourself and don’t want to disturb your neighbours.

    Improved insulation and heat retention

    Thanks to the repair of the window, the frame especially, will help to keep heat, which is generated from the inside, from leaving the building.

    This condition management can work on the other side too – on those hot days outside, the heat will be kept out, whilst the cool conditions set in the building will be maintained.

    Drastically reduced dirt and dust

    No matter how tightly a window may be closed, any gaps in the installation will allow for dirt and dust to be swept in from the outside. Repairing the frames will dramatically cut down on the elements from the outside, being able to find their way in.

    Smoothly-operating windows

    Once repaired, sash windows will prove to be much easier to open from the inside. This ease of operation will no doubt be of great relief to many, who may have been struggling to open stiff, outdated windows that are fitted with mechanisms that just aren’t fit for modern day use.

    Extended window life

    By having your window fittings repaired, using modern tools and techniques, you are able to guarantee a much longer life for your traditional sash window installation.

    Improved security

    Aside from being able to install specialist types of glass that can be used for safety protection, all of our window installations will be fitted with modern locking technology. This will make these old, traditional-looking windows virtually impossible to force open from the outside by hand, once they’re locked.

    We combine traditional craftsmanship with the latest technology to make exquisite Sash Windows, providing elegance and an aesthetic touch which in turn adds value to your property.

    Many older window installations are reported to deteriorate to the extent where they cause rattling and rot to form and even lets in draughts.

    This happens due to many adverse effects such as weather, external damage or even as simple as ageing. When such materials exist on your property, then you should get yourself in touch with the experts.

    The need for an effective and professional draught sealing is mandatory, or else your home will be flooded with dust, dirt, wind and external noise. There is another way you would waste money on your heating and fuel consumption is when your home’s heath filters out through the hole which makes you uncomfortable and feels cold.

    We are a specialised team, dedicated to the refurbishment and repair of existing sash windows in London

    We are also able to offer a complete overhaul and installation service

    Sash doors, and other exterior lighting tunnels, are both extremely practical and beautiful aspects of your home’s overall design. Thanks to their glass-heavy appearance, they allow a great deal of natural light to enter into an interior design and their intelligent design can provide a long-lasting and smooth service, if they are properly maintained.

    We understand that finding the time to properly take care of your sash portals can be extremely difficult, and that most homeowners are forced to make do with simply going over them with a wet sponge every now and again. Without the proper maintenance, traditional portals of these designs – just like anything else – will become unusable. As dirt and dust collects within the design itself, you may be unable to open the windows at all.

    We are experts at maintaining the integrity of older window designs, which makes us an ideal solution for repair or refurbishment if you live in a listed property. If you are able to authorise the replacement of muntin windows in these kinds of properties, then it is likely that you will require a like for like exchange, to keep the aesthetic associated with your building.

    As a professional team, we are able to offer this high-quality service to ensure that you can adhere to the requirements of your local authority, without having to suffer within your home environment through inefficient draught sealing and poor usability.


    Those of your home’s exterior portals which have undergone our specialist maintenance and refurbishment services can enjoy a wide range of benefits, particularly those which have been upgraded from traditional, single-glazed designs to double-glazed sash window alternatives.

    Double-glazed sash windows can offer a range of benefits over single-glazed alternatives, such as increased heat retention and fuel efficiency, overall financial savings, less condensation and an improved soundproofing aspect.


    Whether you’re looking to upgrade your existing traditional units to double-glazed alternatives or you need professional refurbishment services to return your portals to their former glory, you needn’t look any further than Kellys. As a team of professionals, with many years’ experience in the repair, refurbishment and installation of sash designs, you can trust us to take care of your aperture-based problems and concerns.

    If you’re looking for a professional service in London, you need to get in touch with Kellys Sash Windows today. Contact us today on 0800 634 8636!

    Along with the draught sealing strategy, we also repair the damaged parts of your sash windows no matter if it is timber, the glazing, the lock or even the associated ironmongery.

    Once you choose Kellys sash window restoration, you will be assured that you will receive the best professional service with no compromise on the service and quality, along with a 2-year guarantee. Additionally, we offer a diverse range of solutions to the problems affiliated with the poorly maintained windows.

    Here at Kellys Sash Windows, we have worked on many styles of property; from classic Victorian-era terraced houses to elegant town houses and many other fantastic historical buildings. Whatever job we undertake, you can be safe in the knowledge that we will treat it with the utmost respect as we go about our work.

    Contact us for FREE advice or a no obligation quote on 0800 634 8636.

    Or alternatively fill out or short form and we will get back to you.

    If you require any help in repairing, restoring or fitting any sash windows or doors, or just want more information on sash windows in general, please don’t hesitate to contact a member of our expert team on 0800 634 8636  or e-mail us at

    Contact Our Expert Team

    If you would like further information on how we can help to repair, restore or fit any sash windows or doors, please do not hesitate to get in touch with us today.