Draught Proofing Sash Windows in London

We offer wooden sash window restoration, sash window installation, double glazing, maintenance, refurbishment and replace old sash windows.

Arthur East

Arthur is a hardworking and dedicated Glazing specialist, with over 10 years trades experience


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What is Draught Proofing?


Draught proofing is the process of reducing and preventing draughts and cold air loss through your sash window so you can save money on your heating bills and protect your precious belongings. At Ace Sash Windows London, we’ve been draught-proofing sash windows for over a decade. Our draught-proofing service aims to ensure that your property can keep the warmth in the winter, or keep the heat out in the summer, while keeping your windows in condition. We offer one of the most comprehensive ranges of draught-proofing products, services and solutions to UK homeowners and landlords whose properties are plagued by draughts. Contact us now on 020 452 51669 to find out how we can help you.

What are the Causes of Sash Window Draughts?


Old Window Seals

Old window seals allow air to creep into your home through the gaps between frames and panes of glass, and this can have a huge effect on your energy bill each month.

Damaged window seals

If there are splits or gaps in the seals this can cause the wind to blow in and out of the cavity, causing draughts in your sash windows.

Old frames

Draughts may also affect your sash windows when the cracks, gaps, and other openings between the frame parts lose energy.

Damaged frames

If the frame of a sash window is damaged, it will lead to gaps through which air can enter your home and cause draughts.

Poor installation

Poorly installed sash windows are the single largest cause of draughts and heat loss through your windows. If the frame is not well sealed, air can blow through and out of the seams.

Damaged structure

Sash windows are made up of a number of individual components. These can become damaged over time as a result of poor maintenance or vandalism. This can allow draughts to enter your home.

Absence of draught-proofing seals

Without proper proofing seals, cold air could get into your living space easily, causing draughts. The reason being that sash windows need a good proofing seal to keep the warmth in and the cold air out.

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What are the Benefits of Draught Proofing Your Sash Windows?


Reduced energy bills

Draught proofing sash windows can help to reduce your energy bills. A properly sealed draught-proof sash window will help to keep your home warmer and save money on heating bills. A single measure can save up to £50 a month on heating bills in just one room.


Is your draughty sash window keeping you awake at night? The addition of draught-proofing, which consists of a combination of products that work together to make your windows more airtight, will eliminate this problem and create a more comfortable environment.

Healthier home

Draught spreads spores and bacteria that can make you and your family sick. Draught proofing your sash windows is an essential and affordable way of helping to keep your family warm, comfortable, and healthy.

Reduced carbon footprint

Keeping excess heat in and cold air out will reduce your carbon footprint, helping to protect our planet for future generations. Draught proofing is one of the easiest and cheapest home improvements you make in order to reduce your carbon footprint.

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To find out more about our services, get free quotations, or arrange an appointment, call this number 020 452 51669.

Our Sash Windows Draught Proofing Solutions

We provide a fully comprehensive service that ranges from draught-proofing sashing and repairing or replacing your old windows. We use a unique jamb and sill packers to seal out drafts, heat loss, and sound transfer.

Proven to increase your home’s overall energy efficiency while making it more comfortable throughout, our draught-proofing solutions include:

  • Repairs, servicing and replacement of parts of sash windows and shutter replacements.
  • Draught proofing for both wood, PVC frames and even double glazed sash windows
  • Professional window replacement
  • Secondary glazing
  • Sealing draughts
  • Repairing damaged glazing or timber
  • Weatherstrips, beads and draught excluders for your sash windows

Our Sash Window Draught Proofing Process

We carry out the following process to ensure that your windows are draught proofed effectively:


Initial Consultation

To provide you with sash window draught-proofing solutions for your property, we would first arrange a FREE consultation at a time that suits you. By providing the relevant details and answering any questions you may have, we can prepare an accurate estimate and also explore alternative options with you.

Draught Analysis

From our initial visit to your property, we will assess which windows meet the criteria for a draught-proofing solution and then take accurate measurements that are required.

Solutions Recommendation

After our draught-proofing analysis, ye will offer you an impartial recommendation on your sash windows draught-proofing. We will recommend the ideal solution for your home, our products, service and repair options in detail.


At this stage, we mark up the frame and glass to understand what needs to be done. We then remove the sash from the frame, which allows us to repair or replace everything that’s needed. Then we rehang the sash, reglaze it, rebalance it and finish by adding draught seals.


Why Choose Trade Timber Windows and Doors London


Highest quality materials

We use the highest quality materials to improve the efficiency of your windows while reducing the energy loss into and out of your home, helping you to save on heating bills.

FREE on-site estimates

We understand that sash windows are worth a lot of money, that’s why we always give you the FREE on-site estimate. It takes absolutely no risk out of the equation. Call us today on 020 452 51669.

Competitive price

We provide cheap and affordable draught-proofing sash windows solutions in London without compromising quality. We are confident that you will be happy with our services.

Superior craftsmanship

The expert craftsmanship of our experienced team ensures that every single sash is repaired with great attention to detail in order to ensure that your windows remain draught free.

Years of experience

Who better to trust with the work on your sash window? Trade Timber Windows and Doors London. We have decades of experience in draught-proofing sash windows in London, helping our customers to reduce energy bills, improve the security, and enhance the value of their property.

Excellent customer service

Customer satisfaction is our aim. Our customers love us because we offer a much better service- proper customer care, quick responses, total honesty and transparency throughout, no hard sell tactics or lies.

10-year guarantee

We guarantee you’ll love your new draught-proofing sash windows installed by us so much that, for 10 years after installation, you can call us back and we’ll carry out any remedial work required absolutely free of charge. Call us to schedule an appointment and check what we can do for you! Call 020 452 51669.


Frequently Asked Questions

Does draught-proofing sash windows work?

Yes. Draught proofing sash windows is proven to be effective. The difference it can make, however, will vary depending on the extent of the problem and the workmanship of the job itself.

Why does my window make noises?

The primary reason they do this is because of the window moving in and out. This movement creates small amounts of friction between the frame or sashes and the window opening. This friction causes movement which produces noise.

How long will draught-proofing measures last?

Draught proofing measures should last the life of the building. However, as draught-proofing materials deteriorate or become affected by dirt or corrosion, their effectiveness decreases, thereby increasing the likelihood of draughts. To ensure your draught-proofing measures last, we recommend that you invest in an annual maintenance contract or inspection by a professionally trained specialist.

How do I stop my sash windows from rattling?

In most cases, draughty windows are caused by loose or broken sashes or poor weather seals. These problems can usually be easily by a professional draught-proofing installer who have the knowledge and experience. He will be able to supply missing sash cords and install proper weather seals to stop your sash windows from rattling.

What is the main reason for draught-proofing?

The main objective of this is to stop cold air from coming in through open windows, and warm air going out through them. It’s a mechanical process that allows homeowners or building owners to cut down on their heating bills.

Are references available from previous customers?

Most definitely, just take a look through the testimonials section on our website. If you feel that this is not enough as far as assurances go please feel free to contact us and we will be happy to speak with past customers personally via phone or email.

Can my uPVC window be draught proofed?

The answer is YES, your uPVC window can be draught proofed. When a sash window is fitted into a frame using uPVC, the hole left behind at the rear of the sash unit is sealed with a special sealant or glaze in order to create an airtight bond and prevent any air leakage.

Does draught-proofing require building regulations?

Yes, draught-proofing does require building regulations to ensure that work carried out during renovations falls within a high standard and quality, ensuring that the homeowner is safe at all times. Our sash window draught-proofing systems will allow you to meet all aspects of the building regulations for your sash window draught-proofing.

How can I find out where a draught is coming from?

It can be hard to find where exactly a draught is coming from in your property. The best method is to have an engineer take a look at it and make sure that you don’t have any inefficient or worn out seals inside of your sash windows. Ace Sash Window London is all you need. Simply call us on 020 452 51669 for a free survey and advice on your option.

How long does the draught-proofing process take?

It can take up to 3 hours for the draught-proofing process to be complete depending on the size and number of windows to be draught proofed.

How much does it cost to have my sash window draught proofed?

The cost of sash window draught-proofing varies depending on the size of the window and what you want us to do. For a free, no-obligation quotation fill in our quote request form or call 020 452 51669 to ask us all your enquiries. For price examples, see our Sash Window Draughts Guide of prices and services.

Will I have to pay a deposit?

No deposit is required to place an order with Trade Timber Windows and Doors. A deposit only has to be made on orders for installation, but you can even take your time deciding when to pay the deposit – up to the final day before the work starts!

How much noise reduction can you achieve with sash windows?

Modern sash windows can be used to reduce noise in our busy city centres. Achieving up to 47dB noise reduction, it’s possible to silence the roar of planes, trains and automobiles.



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