Draft Proofing Sash and Case
Install Our Sash Window Draught Proofing for Energy Efficiency
Draught Proof Your Home with Eco Sash & Case – Boost Comfort & Reduce Heating Costs
Our draughtproofing system is designed to radically improve any window’s draught caused by old sash windows with as little visible alteration as possible. This ensures you retain the beauty of your window sashes and preserve the character of your period property or listed buildings, which is crucial for heritage conservation.
Did you know that air infiltration can be reduced by as much as 86% by draught proofing your windows? So, reduce those draughts and make your home more energy efficient. You’ll not only lower your heating bills but also enjoy significant savings.


How Our Draught Proofing System Works
We only use the best draught proofing system on the market to combat those pesky window draughts. Our draught proofing brush strips are inserted into the timber, enhancing insulation without compromising the window’s integrity or operation. This service is a standard in our refurbishment package, making it ideal for conservation areas.
During our draughtproofing service, we will remove the baton rods from the windows and rout out the appropriate gauge of draught pile. The lower sash window is also routed along the mid and bottom rails and fitted with an 11.5mm gauge draught pile, ensuring an airtight seal while still allowing for proper ventilation and fresh air circulation.
Gaps in old single glazed sash windows can range from 3mm to 10mm. Because of this, our draught system comes in 3 different lengths to fit any size of gaps in your sash windows, from 5.5mm, 8.5mm to 11.5mm. This flexibility ensures optimal air circulation while preventing any unwanted cold air from entering your home.
Benefits Of Draught Proofing Your Windows
- Improved Energy Efficiency: By reducing the amount of air escaping, our draught proofing helps maintain a consistent indoor temperature. Helping reduce your heating bills in the winter by stopping the warm air from escaping.
- Cost Savings: Improved insulation from draughtproofing will also help reduce energy consumption, leading to a noticeable decrease in your energy bills, providing an excellent return on investment.
- Noise Reduction: The added insulation can help with soundproofing, reducing external noise, and improving your home’s overall comfort.
- Increased Property Value: Energy-efficient upgrades like our draughtproofing system can increase your property’s value, making it a great investment.


Draught Proofing : The Facts
You may be surprised to hear that the total airspace around the average sash window is equivalent to a hole in the wall 6 inches square in size. That’s big enough to fit your arm through!
With all this room for manoeuvre, it is no wonder that sash windows tend to rattle and let in draughts. Draught proofing sash windows fixes this easily.
It is also commonplace to position a radiator directly beneath, resulting in energy and money going literally straight out the window.
How will draught proofing my sash windows help?
Airspace is inherent to the design of sash windows; it is necessary to allow windows to move. The Eco Sash & Case draught proofing system will simply fill this gap with a soft brush, creating a barrier to all of those unwanted nasties and keeping valuable heat in. Your home will instantly become a cosier, cleaner, safer environment, not to mention cheaper and greener to run.
Will it be visible?
No. Using the ECO Sash & Case Draught Proofing System, the brush strips, known as weather fin piles, are fitted between the inner and outer frames, sealing the gaps. They literally become part of the frame. This cannot be seen unless you look very closely with your windows open.
How will it affect the movement of the sash windows?
It will improve it. During the installation process we completely remove and rehang each sash window. They will slide easily and won’t rattle. Where necessary, the frames themselves will be expertly restored by our experienced team, ready for draught proofing. We provide a full service!
Will draught proofing require planning permission?
You won’t need planning permission for this.
Why Choose Eco Sash & Case?
- Expertise: We specialize in sash windows and understand the unique challenges of draughtproofing these classic features, especially in conservation areas.
- Quality Materials: We use only the highest quality draught proofing system to ensure long-lasting performance and smooth window operation.
- Tailored Solutions: Our system is adaptable to various window sizes and styles, ensuring a perfect fit for your home.
- Comprehensive Service: From initial survey to post-installation testing, we ensure every step is done to the highest standard, avoiding common mistakes in draughtproofing.
- Preservation Focus: We understand the importance of maintaining the character of period properties and work within conservation guidelines, ensuring our draughtproofing doesn’t interfere with the heritage of your home.


