RetroFit Double Glaze Window & Door Installers Enhancing Comfort & Efficiency in Over 5,000 Melbourne Homes Since 2011

At RetroFit Double Glaze, we transform your space into comfortable, energy-efficient, sustainable homes with our expert retrofit double-glazing services, upgrading existing timber windows in Melbourne.

  • Retrofit Double Glazed Windows & Doors

  • Done For You Installations

  • DIY Solutions Available

Play Video

RetroFit Double Glaze
4.9
Based on 38 reviews
Steve Mettrick
Steve Mettrick
07:24 24 Mar 25
Right from first contact we had high confidence in the Retrofit Double Glaze team. As so it proved. We are delighted with the quality of product for our 100-year-old Californian Bungalow reducing heat on hot days, retaining it on cooler evenings and reducing the level of outside noise. A bonus for us was the restoration work undertaken on our double hung windows. We have been impressed with clarity and timeliness of communication through the whole process and ultimately the quality of the work undertaken. Very happy to recommend.
Adrian Barca
Adrian Barca
03:19 21 Mar 25
We recently had our windows retrofit with double glazing and the entire process was seamless from start to finish. They made everything really easy -great communication and really happy with the end result. I’m a carpenter by trade and the guys did an awesome job. Our home is noticeably quieter and more insulated already!A big shoutout to the office team for being so helpful and ensuring everything ran smoothly and to the installers for their attention to detail. The guys onsite were friendly, tidy and clearly take pride in their work. Highly recommend!
Alla Nunan
Alla Nunan
00:15 20 Mar 25
Highly recommend Retrofit Double Glaze.We are very pleased with the installation of double glazing on our Victorian terrace windows.Jarrod was friendly, professional and had great attention to detail.The windows are well insulated and open smoothly.Next stage is painting. Thank you!
Jack Rintoul
Jack Rintoul
07:34 05 Mar 25
Great company. Great people. Valentin completed his work with skill and speed. We’re amazed by the results.
Alfredo Milesi
Alfredo Milesi
01:56 05 Mar 25
Valentin is incredible, 100% recommended.
German Apel
German Apel
01:47 05 Mar 25
Amazing job from the retrofit team, especially from that Valentin guy. His professionalism and attention to detail were outstanding. I was so focused on the quality of the work that I didn’t even notice the door was made of glass and walked right into it. Anyway, amazing job!
Augusto Schneider
Augusto Schneider
01:43 05 Mar 25
I was really impress with the work that the lads did in my house. I recommed 100% this companyThank you Justin and Valen, you were awesome and so profesional!
Veronica Mas
Veronica Mas
01:31 05 Mar 25
I had most of my home done with Retrofit Double Glaze, and I felt comfortable from the start. The team was professional, responsible, and easy to work with. They paid attention to every detail and made the whole process smooth. Big shoutout to Valentín’s team—Justin and Jared did an amazing job.
Timothy Race
Timothy Race
23:29 25 Feb 25
I got Retrofit in to double glaze the windows in a very cold room (winter). The quote was half the price of the other one, and looked a better result. Retrofit staff had an excellent attitude and worked carefully and well. They took pride in their work. The result is great though the windows are heavy to open now. I still have to stain the wood and the result will be excellent. I would not hesitate to recommend Retrofit if you want your windows fixed.
Zara Morris
Zara Morris
03:37 21 Feb 25
Retrofit Double glaze is a very professional company. They were friendly, helpful and easy to deal with. They gave us a better quote than other companies, and we didn’t have to wait long to get the job done. I highly recommend them. The guy who installed our windows-Valentine- did a great job installing and cleaning up after. He went above and beyond. Thank you. I wouldn’t hesitate to use them again.
Allspray Trucks
Allspray Trucks
21:31 08 Feb 25
Seeking an environmentally conscious solution for single pane windows and sliding doors both west and east facing was a dream due to the streamlined cohesiveness of everyone at the RetroFit Team. From the information provided, quotation, on site visit, book in and install we couldn't be happier. This is our fifth house renovation and the high level of professionalism and quality of the install executed by Val and George reinforces our 5 star rating. RetroFit is a business that met and exceeded our expectations.
Robert Macey
Robert Macey
00:46 30 Jan 25
Efficient and professional service with a great result.
HCorp Holdings
HCorp Holdings
04:03 22 Jan 25
I can highly recommend Retrofit Double Glaze. We double glazed throughout, include over 4m high timber framed entry areas, second story timber and original sash windows. From quote to install - Mark, Al, Liam, Valentin and his crew were professional from start to finish. The team were all a pleasure to have in the house. Very respectful and despite the extent of works, kept it cleaned at end of day.The outcome is impressive. The difference in soundproofing and thermal efficiency is incredible. Our home is so much quieter now, and the temperature stays consistent. They took care to recomend extra works to repair and fix old rot and ensure a truly durable finish. Thanks again team.
Roger Graham
Roger Graham
10:20 17 Jan 25
The work was organised quickly after my many(!) questions were patiently answered by the team. Any lingering concerns were put at ease by Liam during the measuring and quoting process.The work itself took just 2-1/2 days instead of the estimated 4 days, and was done to a high standard by a cheerful crew. Recommended.
Joe Marchese
Joe Marchese
05:38 14 Nov 24
Just had double glazed windows installed by the team at RetroFit Double Glaze. A great experience all round from the friendly quotation to the installation team. A special shout out to Liam and Shane and Mark and Bailey who undertook the installation work with great care professionalism. Especially Liam and Shane who worked through the day until late to get the job finished which needed extra work done. Bravo lads and highly recommend the company if you need the services they provide.
Kitty Muntz
Kitty Muntz
02:09 29 Oct 24
I had 2 walls of floor to ceiling glass (in timber frame) replaced with double glazed glass by Retrofit Double Glazing. They were great and I have no hesitation in recommending them. They arrived on time, did an excellent job of the install (especially upstairs where they had to work from a sloping polycarbonate veranda roof outside the work area), and cleaned up after themselves. The price was reasonable - much less than replacing the whole window including frames.
Very happy with the work done and the guys who installed were very professional - I would recommend
Phillip Deery
Phillip Deery
00:15 06 Sep 24
An excellent job: professional, efficient and lovely tradesmen. I highly recommend this company.
sandy m
sandy m
23:23 30 Aug 24
Great experience from start to finish. Good communication from the office and the guys onsite were friendly, quick and reliable. We are extremely happy with the installation. Would highly recommend Retrofit Double Glaze.
Hannah Spracklan-Holl
Hannah Spracklan-Holl
00:18 27 Aug 24
They were awesome from start to finish. Great communication, great work, great result. Would highly recommend and definitely use again.
Dan Parker
Dan Parker
03:08 16 Aug 24
We had 18 windows changed over recently. Huge difference in the warmth of my house now. The guys were friendly.
Rebecca Mann
Rebecca Mann
22:35 25 Jul 24
Awesome customer service.
Juan Gervasoni
Juan Gervasoni
21:32 04 Jul 24
I can't recommend Retrofit Double Glaze enough! Valentin and his crew were incredibly professional from start to finish. They were meticulous with the installation, making sure every detail was perfect.But the real win is the windows themselves! You can barely tell they're double glazed, but the difference in soundproofing and thermal efficiency is incredible. Our home is so much quieter now, and the temperature stays consistent – no more blasting the AC in summer or cranking the heat in winter. Retrofit Double Glaze truly breathed new life into very old windows. Thanks again
Deahne Baker
Deahne Baker
22:22 02 Jul 24
We are really happy with the work undertaken by RetroFit Double Glaze. Mark and Liam were really attentive throughout the process and completed the work in a highly skilled manner. They left the house spotless after completing the install. We’ve noticed a difference in the heat and sound insulation - especially once all windows were completed. They also had some handy tips on further insulation which we will definitely explore!
Lucho Rivero
Lucho Rivero
12:12 05 Jun 24
Very friendly and easy going peopleThanks to mark and Daniel, happy with my new double glaze windows.
Bryony Blake
Bryony Blake
07:18 30 Apr 24
Amazing experience with Retrofit Double Glaze. We are extremely satisfied with the results and would highly recommend to others. I appreciated their explanations of the installation process and their patience answering all our questions.
John Robben
John Robben
11:47 29 Apr 24
RetroFit Double Glaze installed new glass in the house that I just bought. They were very professional and especially the Argentinian boy worked very accurately and left everything neat and tidy.I would definetely recommend this company to everyone looking to upgrade their glazing.
liz marquez
liz marquez
09:15 29 Apr 24
I highly recommend Retrofit Double Glaze!Valentin and Liam recently installed double-glazed windows in my home, Not only do the windows look great, bit the difference in temperature and noise reduction is amazing Valentin and Liam were professional, courteous, and efficient throughout the entire process. I highly recommend Retrofit Double Glaze for anyone looking to upgrade their windows.
Luciano Luppi
Luciano Luppi
08:43 30 Mar 24
Excellent company
Tim Peck
Tim Peck
05:40 02 Mar 24
Had an eccellent experience with RetroFit Double Glaze recently. We went with the companies 'DIY' option, which meant we were supplied with all the required components and had a professional on site teaching us the process of retro-fitting our own windows with double glazing.We can't rate the process highly enough! Billy, our instructor for the day, was fantastic and guided us through the process step by step, which made a daunting process really manageable.Highly recommend this company. And if you're a little bit handy and have some power tools available, the 'DIY' option is really worth considering.
Mollie Jackson
Mollie Jackson
02:44 28 Feb 24
skpy
skpy
03:14 14 Feb 24
Retrofit did an amazing job improving and refreshing my double hung windows. You can barely tell they are double glazed yet the difference in sound and heat is huge. Breathed new life into very old windows.Will get them back to do more windows in my house! A great solution, was so so so much cheaper than the quotes I got for new PVC windows, and a more classic result.
Chris Muling
Chris Muling
03:28 12 Feb 24
The guys who installed (Liam I think) were super professional and the finished product was as promised. They even helped with advice on how to prep the timber for painting.The house is quieter and cooler and we’re more relaxed when our toddler gets too close to the lower windows.
Geezer init
Geezer init
08:54 21 Dec 23
Dan and Carlos installed my windows and they couldn’t have been nicer to deal with. They explained all the work they were going to do and checked in that I was comfortable with the installation. They had a real attention to detail and their craftsmanship was excellent. They showed they really cared about the job they were doing.The windows are excellent and the house now has a hushed feel about it. Exactly what I was after. Can’t recommend these guys highly enough. I will be a repeat customer.
Mark Bell
Mark Bell
05:36 21 Dec 23
Hats off to the the team at RetroFit, who completed the install of new glass at my place with speed and professionalism. Every interaction was easy with them, and they were significantly cheaper than the other quotes I received. The final windows looks great!
Valentin Gervasoni
Valentin Gervasoni
03:52 29 Nov 23
Rick Tonissen
Rick Tonissen
09:02 20 Nov 23
I used Retrofit Double Glaze to replace the glass on my Victorian house. The guys showed up on time, were very professional and my new windows are a lot quieter now.
js_loader

We Retrofit Your Existing Window & Door Frames

Achieve a quieter, more comfortable, and energy-efficient home without the high costs or environmental impact. Our retrofit double-glazed window installations are the perfect solution for Melbourne's discerning homeowner.

You can keep your timber window frames or doors in good condition and still enjoy the benefits of double glazing by just replacing the glass. This way, you can maintain the character of your home and save money compared to replacing the entire window frames.

double glaze window installer

We Install

We Install

We can manage the entire install for you, from end to end. From measuring to removing the old glass, it’s all on us.
 

you install

You Install

You Install

Good news: You can replace your windows with double glazing yourself if you're into DIY renovations. We've created a detailed guide to help you!

Why choose retrofit & Double Glazed over replacement?

Choosing retrofit double-glazed windows over replacements offers a blend of comfort, efficiency, and style, particularly in Melbourne's dynamic climate. These windows outperform single-glazed units by significantly reducing heat loss in winter and heat gain in summer, thanks to their superior insulation capabilities—up to 73% improvement. They also reduce external noise by 70%, enhancing your home's tranquillity.

  • Up to 73% Improved Insulation: Our innovative retrofit double-glazed windows boost your home's insulation, keeping you warm in winter and cool in summer without compromising on style or structural integrity.
  • Noise Reduction by 70%: Say goodbye to sleepless nights. Our double-glazed windows significantly reduce external noise, creating a peaceful haven in the heart of Melbourne.

Our Argon-filled units, optionally coated with Low/E, offer unmatched thermal efficiency compared to standard IGUs, all while preserving your existing window frames. This eco-friendly approach retains the architectural integrity of your Melbourne home and is cost-effective, delivering the benefits of double glazing at a fraction of the cost of full replacements. Retrofitting is the smart choice for those looking to improve their home's comfort and security without sacrificing its character or incurring unnecessary expenses.

  • Enhanced Security and Safety: With options for Safety Glass, our installations provide an extra layer of security, offering you peace of mind.
  • Eco-Friendly Solution: Our retrofit installations are a step towards a greener, more sustainable Melbourne by preserving your existing window frames and utilising materials made from 100% recycled components.
icon 03

Reduced Energy Usage Up To 60%

Do the right thing for the planet and your wallet. Use less energy to heat your home in winter and cool it in summer, especially in Melbourne where temperatures vary from season to season.

icon 02

Silenced Noise Up To 50%

Double glazing is effective at reducing unwanted noise, such as loud traffic, noisy neighbors, or irritating barking dogs. Our Hush Glass laminate is an industry leader in reducing noise, turning the volume down by over 30% compared to standard double glazing.

icon 04

Reduced Condensation

Internal condensation creates humidity in your home, leading to discomfort and potentially unsafe mold and mildew growth. Double glazing reduces condensation by providing insulation.

icon 05

Increased Security

Double glazing is much more resistant to breaking than standard glass. Our range includes toughened and thicker options, as well as laminated choices.

The Retrofit Team

Meet the dedicated team behind Retrofit Double Glaze - committed to making Melbourne homes more energy-efficient and comfortable, one window at a time. Founded in 2011 by Alan Cuthbertson, we have spent over a decade providing high-quality and affordable double-glazing solutions.

Our mission is to help you combat climate change from the comfort of your home. With a focus on quality, affordability, and integrity, we simplify the high-tech world of Insulated Glass Units to ensure your specific needs are met with the perfect solution. Join us on our journey towards a healthier, more sustainable future.

diy double glazed retrofit window installation team

Request A FREE Measure & Quote

Fill in the form below or call us now on 1300 399 389

Best Price Guarantee

Best Price Guarantee

Satisfied Clients 4.9/5 Reviews

Satisfied Clients 4.9/5 Reviews

10 Year Warranty

10 Year Warranty

We are able to retrofit almost all types of timber windows, including Double Hung, Awning, Casement, Fixed, Clerestory, Doors, and Sliding Windows. If you're unsure, please feel free to send us a photo of your window, and we'll be happy to check it out.

The installation of double glazing can help you save on energy costs, increase comfort, and improve the soundproofing of your property. It also enhances the appearance and value of your property. Retrofitting double glazing is significantly more cost-effective than replacing the entire window frame with a new uPVC, Timber, or Thermally broken aluminum frame, while maintaining similar performance. Additionally, it is a more sustainable option, as it reduces waste by utilising the existing frame.

You don't need to replace your current frames during the retrofit process. Our team will fit the new glass pane to your existing window frame.

Double glazing retrofit is a wise long-term investment that can save you money on energy costs, increase the comfort and value of your property, and improve its sound insulation for many years to come.

Yes, double glazing retrofit is an eco-friendly solution as it helps reduce energy consumption, thus lowering your carbon footprint. Retaining your existing window frames reduces waste compared to discarding frames like some other solutions.

Scroll to Top