Aluminium Retrofit

Aluminium retrofit involves removing the existing single glazing and replacing it with high-performance Low-E double-glazed units, installed into your existing aluminium frames for improved insulation and comfort.

Fast, on-site installation

All aluminium retrofit glazing is completed on site, which keeps disruption to a minimum. In most cases, we’re able to upgrade an entire home in around two days, with no windows left unfinished overnight. Our team works efficiently and respectfully in your home, leaving the space clean and tidy at the end of each day.

Aluminium Frames Retrofit Double Glazing

Double Glazing Installer Existing Aluminium Frames

A more cost-effective solution

By upgrading the glazing rather than replacing the entire window, aluminium retrofit offers a significantly more affordable solution compared to full window replacement. Using your existing frames reduces labour, materials, and downtime while still delivering a huge improvement in thermal and acoustic performance.

Modernise the look of your aluminium windows

As part of the retrofit process, we can improve the layout and appearance of existing aluminium frames. This may include removing unnecessary vision rails, fixed bars, or redundant opening sashes to create a cleaner, more modern look while maintaining structural integrity and performance.

Factory-made openings and sliding door inserts

All new opening windows and sliding door inserts are manufactured in our factory to ensure precision and consistency. New opening sashes are supplied with updated hardware including latches, friction stays, and fresh seals, while all existing windows receive new seals as part of the upgrade. This approach ensures smooth operation, improved performance, and a complete, high-quality finish across every window and door.

High-Performance Double Glazing

Our double-glazed units are manufactured using world-class components and industry-leading global technology. Each unit features a thermally improved warm-edge spacer that bonds the glass panes together, helping retain argon gas for long-term performance. Combined with argon-filled units and high-performance Low-E glass, this system delivers excellent thermal efficiency and comfort.

Glass Information

Home Comfort Steps

1. Home consultation

One of our team visits your home to assess your existing window frames and discuss your retrofit double glazing options. After the visit, we provide a clear, free, no-obligation quote for your project.

2. Final measurement

If you choose to proceed, we return to take precise final measurements so your new insulated glass units can be manufactured to fit your existing frames perfectly.

3. Manufacture

Your custom double-glazed units, new opening windows, and any other materials needed are then manufactured specifically for your home.

4. Professional installation

Once ready, our installers fit the new double-glazed units into your existing timber or aluminium frames, improving insulation while keeping the original structure of your home.

5. Final check

We complete a final walkthrough with you to ensure everything is installed correctly and you are fully satisfied with the result.

Key Benefits

Retrofitting double glazing delivers immediate comfort improvements while enhancing the long-term performance, security, and value of your home. Whether upgrading timber or aluminium windows, these benefits are felt every day.

Lower power bills

Improved insulation reduces heat loss in winter and keeps homes cooler in summer, lowering the need for heating and cooling.

Less condensation

Warmer internal glass surfaces reduce condensation, helping protect window frames, furnishings, and indoor air quality.

Enhanced appearance

Upgraded glazing and cleaner window layouts modernise the look of your home while retaining its original character.

Year-Round Comfort

Double glazing helps stabilise indoor temperatures, making your home more comfortable year-round.

UV and light control

Low-E glass helps manage UV and light levels, reducing fading of furniture, flooring, and interior finishes.

Added resale value

Energy-efficient, double-glazed windows increase buyer appeal and contribute to higher property value.

Reduced heat loss

High-performance glazing significantly slows the transfer of heat through windows, keeping warmth inside where it belongs.

Reduced exterior noise

Double glazing provides an effective sound barrier, minimising unwanted noise from outside.

Enhanced security

Double-glazed units and updated hardware create stronger, more secure windows that are harder to force or break.

Nicky Sevier, Christchurch

On the 19th January your team of extremely competent young men arrived to install our retrofit . double glazing after patiently waiting while we struggled with health issues which we greatly appreciated. They showed such care to the install and worked so well as a team.
They were very efficient, caring and respectful and the end result is we have a wonderful warm cosy house which is so quiet we can't even hear the dogs barking next door. It is absolutely fabulous. One very large window which we had been told could not be double glazed was fitted by your boys seamlessly and it was exciting to see it going in. We would highly recommend Comfortglaze for any of your window needs, they are an extremely competent, friendly and wonderful company to deal with.
Nicky and Moses