Custom Double Glazed Windows

Custom designed windows add character, functionality, uniqueness and a touch of architectural style to a home. But If your beautifully designed custom windows are single glazed they won’t match the high performance of double glazed custom windows.

Double glazing your windows improves their energy efficiency and maintains a more comfortable temperature in your home all year-round.

Our expert team specialise in retrofitting double glazing custom windows with high performance, Australian-made double glazed glass that is cut millimetre perfect to fit the exact specifications of your home.

Benefits of Double Glazing your Custom Windows

Our bespoke double glazing solution is designed to seamlessly integrate with your existing custom window frames, boosting performance while retaining the unique style and character of your existing windows and living space.

Double glazing your existing windows provide a range of benefits for Melbourne homeowners:

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    Tailored solution for your home - high performance double glazed glass will be measured and cut to fit your custom windows, boost their performance and maintain their aesthetic.

  • thermal performance

    Energy efficiency - double glazing your windows improves their insulative properties and keeps your home warmer in winter and cooler in summer.

  • window security

    Reduce energy bills - a more stable home temperature enables you to reduce your reliance on heating and cooling systems in the home.

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    A quieter home - double glazed windows can be up to 60% quieter.

  • windows door

    Reduce condensation - more stable indoor temperature reduces moisture build-up on windows.

  • window noise

    Enhanced security - double glazed windows are tougher and harder to break compared to standard windows.

  • window security

    Boost property value - double glazing is a key feature in the eyes of homebuyers and will boost the value of your home beyond their investment.

  • windows door

    A win for the environment - double glazed custom windows improve energy efficiency, which reduces the reliance on heating and cooling of your home and helping the planet!

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Retain custom aesthetic with improved performance

Our expert install team at RetroFit Double Glaze will ensure that the custom look and styling of your existing windows is retained with the added performance benefits that double glazing provides.

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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Our RetroFit Double Glazing Process

Our mission is to improve the energy efficiency of Melbourne homes and save homeowners money!

Our install process is straightforward and hassle-free:

1

Measure & Quote

We visit your home and assess your windows

2

Glass manufacture

We manufacture your new high performance units to fit your custom windows millimetre perfect.

3

Removal of Old Glass

We carefully remove existing glass from your windows and recycle as much waste as possible.

4

Install

Double glazed units are then sealed into place and you can enjoy your upgraded custom windows.

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Price Match Guaranteed

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

DIY Double Glaze your Custom Windows

If you want to double glaze your windows yourself we have a DIY double glazing solution that includes a step by step guide

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, retrofitting lets us upgrade older timber frames without altering your home’s appearance.

Most installations are completed within a day, depending on the number and size of windows.

Most installations are completed within a day, depending on the number and size of windows.

You can choose from toughened, laminated, low-E, acoustic glass and more, depending on your goals.

Yes. Acoustic-specific configurations can reduce outside noise by up to 60%.

In most cases, yes. Retrofitting uses your existing frames, making it more cost-effective than full replacement.

Double glazing keeps the inner pane warmer, which decreases the likelihood of moisture forming.

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