Unlock the Potential of Your Sash Windows with Secondary Double Glazing in London and Surrey

Enhancing Energy Efficiency Without Compromising Charm

Unlike traditional secondary glazing that obstructs the opening of the sash windows, our panes fit within the glazing bars so seamlessly blend in, preserving the authentic look and feel of your sash windows and making it the perfect choice for listed buildings in London and Surrey

Introducing our innovative secondary glazing solution, designed specifically for sash windows.

At Novells, we understand the importance of preserving the timeless beauty of your traditional sash windows while unlocking the benefits of improved energy efficiency.

Secondary glazing for sash windows, also known as sash window secondary glazing in London and Surrey, offers a cost-effective and unobtrusive way to enhance the thermal performance of your home.

By adding an additional layer of glazing inside the existing sash window frame, we can create a highly effective insulating barrier that traps a layer of air, reducing heat loss and improving overall comfort.

Unlike traditional double glazing that requires replacing the entire window, our secondary glazing for sash windows allows you to maintain the charm and character of your existing windows.

Keep Your Box Frames

New Double-Glazed Sashes Fitted

Sash Windows Transformed

Three easy steps to effectively double glaze your sash windows

Schedule a Call

We'll visit your home assessing each of your windows. We'll then prepare and send you a proposal., detailing how the work will be completed and the investment required. We won't try to sell you windows on the day.

Conduct the Work

We will treat your home as our own, protecting everything before we start work. This usually entails furniture and floors with dust sheets. We expect to spend a full day on each new window installation.

Love Your Sash Windows

Fall in love with your sash windows all over again. Make every other feature come alive after your new sash windows have been fitted, making your house feel truly like a home.

Let us Transform your Sash Windows

We will use our 50 years of combined experience together with our proven glazing systems to upgrade your windows

Secondary Glazing for Your Sash Windows

Experience the best of both worlds – the timeless charm of your sash windows and the modern benefits of enhanced energy efficiency. Unlock the potential of your home with our secondary glazing solution.

Key Benefits of Secondary Double Glazing for Sash Windows:

Enhanced Energy Efficiency: Our secondary double glazing solution can reduce heat loss and emissions by up to 50%, helping you save on energy costs and improve your home’s Energy Performance Certificate (EPC) rating.

Improved Comfort: The insulating properties of our secondary glazing create a more comfortable indoor environment, regulating temperatures and reducing draughts.

Cost-Effective Solution: Compared to full window replacement, our secondary double glazing for sash windows offers a more affordable way to enhance energy efficiency without compromising on quality or aesthetics.

Sustainable Approach: By retaining your existing sash windows and adding our secondary glazing, you’re contributing to a more eco-friendly future, reducing your carbon footprint and saving tonnes of CO2 emissions annually.

With almost two decades of experience and as members of FENSA, our dedicated team and have successfully worked on thousands of wooden sash windows across London & Surrey.

Want your sash windows draught proofed and overhauled at the same time?

Click here to find out more about our sash window refurbishment and draught proofing service.

Alternatively, contact us today to learn more and start your journey towards a more comfortable, efficient and sustainable living space.

Rory Phelan

Incredible service throughout! The new sash windows have completley transformed my home - saving us almost 50% off our heating bill compared to last year.Can't recommend enough!

Past Projects

Why You Should Hire a Professional Painter for Your Refurbished Sash Windows

So here’s why you’ll get better results by hiring a dedicated painter: Sash window fitters...

From Years Of Neglect To A Warm, Bright Area For Entertaining

Cannon Michael contacted us because the Church Hall was cold and draughty. St. Simon’s Church recognised...

From Black Mould & Condensation to a Warm, Damp Free Home

The constant draughts, persistent condensation, and the resulting black mould were making her home uncomfortable...

From Single to Double Glazed Sash Windows Without Replacing the Frames

Rory, the owner of a period property in Bromley, had problematic single glazed Victorian sash windows...

Double glazed sash windows in London and Surrey

Improve the Performance of Your Sash Cord Windows with This Simple Trick

Don’t worry, we have a simple trick that can help improve their performance. By following these...

Ensuring Safety: 2 Steps to Determine If Your Sash Cords Pose a Risk

If you suspect a problem, consider professional sash cord replacement services for peace of mind. Visit...

Sash Window Refurbishment and Draught Proofing Solution

Putting an End to Sash Window Rattles: Discover Our Refurbishment and Draught Proofing Solution

The answer lies in the movement of the sashes within the box frame. In order for the sashes to move freely,...

Alternative Options to Increase the Energy Efficiency of your Home

Sash Window Refurbishment & Draught Proofing

We can refurbish your sash windows in London and Surrey for a fraction of the cost of buying new.

New Timber Double- Glazed Replacement Box Sash Windows

New replacement double glazed box sash windows. Combining classic charm with modern efficiency.

New Timber Double- Glazed sashes fitted to Existing Box Frames

Single to double-glazed sashes, without replacing your frame. Combined with our refurbishment service, your windows and home will be transformed.

Novell's Sash Window Cord Replacement Service

Sash window cord replacement ensures operation and longevity for your sash cord windows.

Robert Ball

I'm a property developer and was looking for a reputable sash window company to refurbish the windows of my current project. I found Novells online and they carried out a site survey within 48hr and fitted my project into their schedule for a couple of days later. They were professional, fast, courteous, cleaned up after themselves and did a great job. I'll 100% will be using them again on future jobs. The photo doesn't give it justice but a brilliant job was done.I can highly recommend them.

Beckie Cole

Really professional and punctual company. I’m really happy with my new timber sash bay window which Novell’s repaired/replaced. It’s very high quality work and looks fantastic. When I had an unrelated issue with the sash pulley system, Phil came out to check it on the same day free of charge - very prompt and helpful! Nicki is great to deal with over email and sorts all of the appointments and payments quickly, with a very friendly manner. Highly recommend this company!

Jacob Grantham

Super happy with my windows and French door from Novells. You get what you pay for which is a quality product fitted quickly and professionally by the team and ably supported by Nikki from the office. The guys who came were great to have in the house, worked the whole time they were there and left the site cleaner than it was when they arrived!

Shola-Maria

Excellent service provided by Novells. From my initial consultation with Phil, regular updates from Nicki, the installation of the sashes by Piotr, Sharas and Yakob, them clearing up and leaving my place spotless and, to the aftercare provided by Nicki and Piotr. Nicki is so helpful and quick to respond. Piotr was so helpful in dealing promptly with the aftercare. Everyone is friendly and professional. I will definitely use Novells again and would recommend them to others. Phil, you have an amazing team. 👍🏾

Our Sash Window Solutions for your Home

Your windows should work.
Keep warm in winter.
Let air circulate to keep cool in summer.

New timber double-glazed sashes fitted to existing box frames

Our sash window refurbishment & draught proofing services

Our UPvC Double Glazed Sash Windows (NEW*)

New timber double- glazed replacement box sash windows

Our innovative secondary glazing for sash windows

Sash cord replacement

Unlock the Potential of Your Sash Windows with Secondary Double Glazing in London and Surrey

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Introducing our innovative secondary glazing solution, designed specifically for sash windows.