Double Glazing Double Hung Windows

Double hung windows are a classic and timeless window style that can commonly be found in heritage, period and contemporary homes. Double hung windows feature vertically sliding sashes, one above the other and are popular for their aesthetic, ease of operation and ventilation control.

However if your double hung windows are single paned they can be a considerable source of energy inefficiency. If you want to improve their energy efficiency while retaining your home’s original aesthetic and charm then retrofit double glazing is a cost effective option!

Retrofit Double Glaze Your Existing Double Hung Windows

At RetroFit Double Glaze, we have extensive experience retrofitting existing double hung windows to high performance and energy efficient double glazed glass, to keep you more comfortable at home all year round.

By double glazing your existing double hung windows you can improve their insulative properties, save money on energy bills and maintain the current character and style of your home. Older double hung windows can be quite drafty and inefficient, in addition to retrofitting double glazing within your double hung windows, we also install a high performance weather sealing system to ensure you get the best out of your windows!

Benefits of Double Glazing Double Hung Windows

  • windows slides

    Preserve your original windows frames, style and heritage charm

  • thermal performance

    Save money on energy bills by reducing heating and cooling usage

  • window security

    Improved insulation & reduced heat transfer equals a more comfortable home

  • wnidow

    Fitting double glazed glass reduces drafts by sealing gaps in window frames

  • windows door

    Added security with tougher double glazed glass

  • windows slides

    Double glazing minimises external noise by up to 70%

  • window security

    Double glazed glass reduces condensation forming on windows

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By retrofitting your double hung windows you can also reduce installation costs as you don’t need to replace your existing window frames!

When double glazing double hung windows, our expert install team carefully adjusts the counterweight system to ensure that your windows retain optimal movement and performance.

RetroFit Double Glaze
4.9
Based on 107 reviews
Philip Miles
Philip Miles
00:37 03 Sep 26
Retrofit did a fantastic job in replacing single glazed panes for double glazed units on my house which is about 17 years old. Very professional, tidy and all round great job!
Niall Kennedy
Niall Kennedy
02:06 30 Aug 26
Really great service from Retrofit. Did a great job double-glazing our 1890s sash windows. Very professional, responsive and always on time. Also super neat and cleaned up everything each day. Very impressed with the job. Particular shout outs to Henry, Valentin and Al who have been fantastic!
John Hughes
John Hughes
06:56 26 Aug 26
Good job all round. Staff were pleasant, got the job done in good time, kept it tidy and cleaned up afterwards. Liam and his team did a great job on the install.
Jeff Newman
Jeff Newman
06:54 25 Aug 26
Outstanding Service and WorkmanshipWe recently had the glass in our home windows replaced and upgraded to double glazing through Retrofit Double Glazing, and we couldn’t be happier with the experience.The professional nature of the company was evident from our very first contact with Warren, through to Jarrod, who carried out the measuring and provided the quote, and our installers, Liam and Eddy. The entire process went seamlessly from start to finish.A special shout-out to Liam and Eddy, who took great care in the way they worked in and around our home. Their extremely high level of workmanship, attention to detail and professional manner gave us complete confidence in the work being carried out. They were respectful of our home and left everything neat and tidy.We also appreciated the follow-up communication from the company, keeping us informed about when the work would be carried out. This gave us peace of mind and allowed us to plan ahead.We would highly recommend Retrofit Double Glazing to anyone considering upgrading their existing windows. From the initial contact through to completion, the service, communication and workmanship were exceptional.A fantastic experience from start to finish!
Jason Mathias
Jason Mathias
04:55 25 Aug 26
The RetroFit Double Glaze install team were fantastic! They were on time, very friendly and respectful and did a brilliant job. Highly recommended.
Inna Smith
Inna Smith
05:18 30 Jul 26
Henry, Shane and Shae did a magnificent job. Very professional and efficient. Thanks for your great work. A huge improvement on our old windows.
Anne
Anne
03:14 30 Jul 26
Brilliant job from start to finish. Easy quoting process and staff helpful. On the day the team arrived promptly, and introduced themselves. Valentin and Jasmin were very professional, polite, and eager to make the installation experience positive. They are a great team! Work completed in a timely manner, windows look wonderful, and they cleaned up before they left. Communication through the day as the job progressed was wonderful. Thanks so much.
Henry Whitmore
Henry Whitmore
00:49 23 Jul 26
Warren is the best bloke i’ve ever talked to, great guy. The glass is good too
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The RetroFit Double Glazing Process

Our passionate and friendly install team upgrade windows across metropolitan Melbourne and our double glazing process is straightforward and hassle-free.

1

Measure & Quote

We visit your home and assess your existing windows

2

Glass is Custom Made & Delivered

High performance glass is cut to precise measurements to fit your existing frames

3

Old Glass Removed & Frame Modified for Double Glazing

Existing glass is carefully removed, we router out existing frames and install your new double glazed glass.

4

Double Glazed Glass Installed

Your new glass is sealed into place, old glass is removed and we recycle as much material as possible.

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Price Match Guaranteed

Find a better price on the same service and we'll match it!

Want to DIY Double Glaze Your Double Hung Windows?

If you are a DIY enthusiast and want to double glaze your windows yourself we have a DIY double glazing solution.

Double Glazed Windows Installation

Meet our expert team of double glazed windows installers. 

diy double glazed retrofit window installation team

Why Use RetroFit Double Glaze?

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Over 12 Years Experience

We specialise in upgrading existing timber windows and enhancing energy efficiency without altering your home's character.

power effective

Enhanced Home Comfort

Enjoy reduced energy expenses, improved noise reduction, and increased security with our double glazed solutions.

sustainable

Commitment to Sustainability

By improving energy efficiency, our solutions help reduce your carbon footprint, contributing positively to the environment.

Frequently Asked Questions

Yes, our double glazing process means that your double hung windows can be retrofitted with double glazed units while keeping your original frames.

You will still be able to operate your windows, however due to additional weights needed in the channels to counterbalance the extra weight of glass. Your window will have reduced opening size.

Double glazing installation will depend on the type of number of windows being upgraded but most projects are generally completed within 1-2 days.

Yes, the insulated design of double glazed units reduces external noise, creating a quieter home.

We also offer draft sealing for double hung windows, which is included in your installation. This will reduce drafts significantly.

Yes, our retrofitting process is designed to preserve and enhance traditional homes while boosting energy efficiency and in home comfort.

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