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Draught proofing is a specialised method used to seal unwanted gaps in doors and windows which prevent cold air from entering a home and also prevents the warm air from escaping. This not only improves energy efficiency but also enhances comfort and reduces external noise from busy roads. Draughts can often become a problem due to natural wear and tear of components or minor warping over time. The charm and beauty of original timber sash windows are undeniable, but without proper draught proofing, they can allow considerable heat loss, leading to higher energy bills and a less comfortable home environment.
Draught proofing addresses these issues by creating a barrier against air leakage while preserving the aesthetic and functional qualities of the windows. This is done by using high quality brush pile seals. It is particularly beneficial for period properties, where replacing windows with modern alternatives would diminish the historic character of the building.
At Traditional Sash Windows and Carpentry, we offer comprehensive draught proofing services tailored specifically to suite sash windows and wooden doors. We understand that each property is unique, and every window has its own characteristics, which is why we take a bespoke approach to every project. Our service includes:
Initial Consultation: We start by conducting an in depth survey of your sash windows or doors to identify areas that are suffering from poor insulation. This includes checking for loose glazing, gaps around the frame, or any warped timber that might allow air to pass through.
Quotation: After assessing your windows, we provide a transparent quotation outlining the work required and materials to be used, along with a breakdown of costs.
Professional Draught Proofing Installation: Our team of experienced craftsmen meticulously install draught proofing systems using techniques that are sympathetic to the historic nature of sash windows, ensuring minimal visual impact.
Free Aftercare Visit: Your satisfaction is our priority, which is why we offer a complimentary aftercare visit within 12 months of the installation. We’ll check that everything is functioning perfectly and address any issues that may have arisen completely free of charge.
We can also provide additional services such as sash window restoration, including reglazing and timber repair, to ensure your windows are in the best possible condition.
Our draught proofing process is designed to be thorough yet non invasive, ensuring that your sash windows retain their original beauty and function smoothly. Here’s a detailed step-by-step breakdown of our method:
Careful Removal of Sashes: The first step involves gently removing the sashes from the frame, allowing us to work on them without causing damage to the timber or glass. This is done using traditional methods that protect the structure of the window.
Cleaning and Inspection: Once the sashes are removed, we clean all accessible areas of the window frame and inspect the components for any damage. This includes checking the condition of the sash cords, pulleys, and weights to ensure the window is operating correctly.
Repair and Restoration (if necessary): If we find any defects such as rotting wood or broken sash cords, we carry out repairs using high quality timber and materials that match the existing window. This is crucial in maintaining the structural integrity of your sash windows and ensuring they operate perfectly.
Fitting new cords and altering weights: Our overhaul service includes replacing all sash weight cord and making sure the widows are perfectly balanced, altering the lead or steel sash weights if nessasary.
Fitting of Draught Seals: We install discreet yet effective draught proofing seals around the window frame, parting beads, and staff beads. These seals are typically made from silicone or brush pile and are designed to compress when the window is closed, blocking any gaps that would allow air to pass through.
Sash Reinstallation and Rebalancing: After fitting the draught proofing seals, we carefully reinstall the sashes into the frame. We then re-balance them, adjusting the weights if necessary, to ensure smooth operation and no rattling.
Hardware replacement: We replace all hardware on the sash window including; locks, lifts, pulls and restrictors. Customers can chose a finish of; Brass, Antique Brass, Polished Chrome, Satin Chrome, or Black
Final Checks and Testing: The last step is to test the window for airtightness and ease of use. We ensure that the draught proofing system is effectively sealing the window while allowing it to open and close effortlessly.
We prioritise using materials that are both high-quality and sympathetic to the historical context of your property. For our draught proofing installations, we use:
Brush Pile Seals: These are made from durable materials like polypropylene, which provide an effective barrier against draughts while remaining discreet. They are ideal for sealing larger gaps around the window frame and offer excellent thermal performance.
Silicone Seals: Silicone seals are perfect for narrow gaps and create an almost invisible seal that does not compromise the window's appearance. They are highly flexible and resistant to weathering, ensuring long-term performance.
Timber for Repairs: Any timber used in repairs is sourced to match the original wood as closely as possible, both in grain and appearance. We use sustainable, high-quality timber that enhances the lifespan of your sash windows.
Choosing the right company to draught proof your sash windows is crucial in preserving the historical integrity of your property while improving its comfort and efficiency. At Traditional Sash Windows and Carpentry, we offer the following:
Expert Craftsmanship: Our team consists of highly skilled carpenters and craftsmen with years of experience working with period properties and sash windows.
A Personalised Service: We provide a personalised approach, ensuring that each window is treated with the care and attention it deserves.
High Quality Materials: We use only the best materials that complement the traditional aesthetics of your windows while offering modern performance benefits.
Comprehensive Aftercare: We offer comprehensive aftercare services, including maintenance and repairs, to ensure your draught proofing remains effective for years to come.
Contact us today to learn more about how we can help you draught proof your sash windows and enjoy a warmer, quieter, and more energy efficient home without compromising on character and charm.
The concept of draught proofing has existed since the early days of sash window design, with early homeowners often using rudimentary methods such as fabric strips or paper to block gaps. However, it wasn’t until the 18th and 19th centuries that more advanced techniques began to emerge, as homeowners and architects sought to balance aesthetics with practicality.
In the Victorian era, sash windows became more widespread, and draught proofing techniques evolved to include rubber and leather seals. During the energy crisis of the 1970s, there was a renewed interest in improving the energy efficiency of historic properties, leading to the development of modern draught proofing systems that we use today.
Energy Efficiency Benefits: According to research by the Energy Saving Trust, draught proofing sash windows can save up to £50 per year on heating bills for a typical home in the UK.
A Sustainable Solution: By draught proofing your sash windows, you reduce the need for energy intensive heating, lowering your carbon footprint and contributing to a more sustainable future.
Improved Property Value: Draught proofing is a cost effective way to enhance your property’s value. Well-maintained, energy efficient sash windows are highly sought after in the property market.
Noise Reduction: Draught proofing can also significantly reduce the amount of noise entering your home from busy Kent and London streets, making it ideal for properties located in busy areas or near main roads.
Maintenance of Original Character: Unlike double glazing, which can sometimes detract from the charm of period properties, draught proofing is virtually invisible, allowing you to maintain the original appearance of your sash windows.
Contact us today to learn more about how we can help you draught proof your sash windows and enjoy a warmer, quieter, and more energy efficient home without compromising on character and charm.
Draught proofing is more than just a means to improve energy efficiency of you home, it’s an investment in the comfort, value, and preservation of your property. At Traditional Sash Windows and Carpentry, we bring together expert craftsmanship and a deep understanding of traditional joinery to deliver draught proofing solutions that maintain the beauty and authenticity of your sash windows while enhancing their overall performance.
Whether your windows need sealing, repairs, refurbishment, or full restoration, our dedicated team is here to provide services that protect your home from the elements and stand the test of time. Contact us today to enjoy a warmer, quieter, and more energy efficient home without compromising on the character you cherish.
Last Updated 2026-07-21
Window draught proofing involves fitting discreet seals around the moving parts of a window to reduce unwanted gaps and cold air entering the property. The seals are designed to improve comfort while allowing the window to continue opening and closing normally.
Yes. Traditional timber sash windows are particularly suitable for draught proofing. Brush seals can usually be fitted into the parting beads, staff beads and meeting rails to reduce air movement around the sashes without significantly changing the appearance of the window.
Professional draught proofing can reduce cold draughts, improve comfort, help retain heat and reduce rattling. It can also help reduce dust and outside noise entering through gaps around the window.
Draught proofing can make a noticeable difference by reducing uncontrolled cold air entering around the windows. It does not improve the thermal performance of the glass itself, but it can help rooms feel warmer and more comfortable.
Reducing uncontrolled air leakage may help lower the amount of energy needed to maintain a comfortable room temperature. The level of saving will depend on the condition of the windows, the property and how the heating is used.
Draught proofing can help reduce noise entering through gaps around the window. However, it will not prevent noise passing through the glass itself. Where noise reduction is the main priority, acoustic glass or secondary glazing may provide a greater improvement.
In most cases, draught-proofing seals help hold the sashes more securely within the frame and significantly reduce rattling. Loose hardware, worn components or damaged timber may also need attention during the work.
Yes. Timber casement windows can often be draught proofed using suitable compression or brush seals. The casements may also need easing, adjusting or realigning to ensure the seals make consistent contact around the frame.
Yes. External timber doors, French doors and some internal doors can be fitted with suitable perimeter seals, threshold seals and meeting-stile seals. The correct system will depend on the design, condition and movement of the door.
Yes. Draught proofing is normally included as part of our full sash window overhaul and draught-proofing service. The windows are removed or opened up as required, serviced, adjusted and refitted with new draught-proofing components.
The work may include removing the sashes, easing and adjusting them, servicing pulleys, replacing sash cords where required, balancing the windows, fitting new parting and staff beads with integrated seals and installing seals at the meeting rails. The exact scope will be confirmed within the quotation.
The sashes will usually need to be removed from the frame so the windows can be properly serviced and the draught-proofing components installed. This allows us to inspect the cords, weights, pulleys, sash edges and concealed areas of the frame.
Worn, frayed or damaged sash cords can be replaced as part of the overhaul. If the existing cords are in good condition, replacement may not always be necessary unless it is included within the agreed scope of work.
Yes. Windows operated by spiral balances can be adjusted or fitted with replacement balances where necessary. The correct balance type and strength must be selected according to the size and weight of each sash.
The seals are designed to be discreet. Brush seals are usually incorporated into timber beads or fitted into narrow grooves around the sashes. Once the window is reassembled, they should have minimal impact on its traditional appearance. When the window is close they are not visible, some strips will be visable when the window is open.
Yes. Draught proofing is often a suitable way to improve the performance of historic windows while retaining the original joinery and glass. For listed buildings, the property owner should confirm whether consent is required before alterations are made.
Yes. Draught proofing generally causes little visible alteration and can help preserve the existing timber windows. It is often a suitable option where complete window replacement would be undesirable or restricted.
No. When correctly installed, the seals should reduce gaps while allowing the windows to operate smoothly. The sashes or casements are eased and adjusted during the work to provide the correct clearance.
Draught proofing does not directly cause condensation, but reducing uncontrolled ventilation can affect moisture levels inside the property. Suitable background ventilation, such as opening windows or using extractor fans, should still be maintained.
Yes. Draught proofing reduces unwanted air leakage but does not prevent the window from being opened. This allows ventilation to be controlled when needed rather than relying on permanent gaps around the frame.
A professionally installed draught-proofing system can remain effective for many years. Its lifespan will depend on how frequently the windows are used, their exposure, ongoing movement and the condition of the surrounding timber.