Get double glazing for your existing timber windows

DIY Double Glaze has been enhancing home comfort and sustainability in Melbourne for over 12 years, installing energy-efficient double-glazed windows that reduce energy bills, warm homes in winter, and cool them in summer.

  • Retrofit Double Glazed Windows

  • DIY Solutions

  • Done For You Window Installations

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DIY Double Glaze
4.9
Based on 15 reviews
Sue Anderson
Sue Anderson
06:40 06 Apr 24
Very Professional. Emails giving full details of how the job was going to be done, what was required from us prior to them arriving. It was great to see that Work safety was important for their workers as well as for us. Excellent workers with pride in their work and had a great team rapport. The finished job was all that we could have asked. Completed on time, No mess was left and care was taken to ensure that we were happy with the end result.I would Absolutely Recommend them. So very happy with the end result.
Oisin Agan
Oisin Agan
23:19 10 Dec 23
Fantastic work on our house in Preston. The guys essentially rebuilt the whole window and sash mechanisms, installed new double glazing panels, and some custom draught sealing. All looks super neat and noticed the difference in temp straight away. Polite, very respectful of my home and couldn't be happier with the result - highly recommended
Helen Smith
Helen Smith
09:17 11 Jul 23
Liam and the DIY Double Glaze team did a great job on our windows. We could see the difference instantly - less noise, better insulation and no more condensation! It only took a few weeks from the initial visit for a quote to the completion of work, which I am also very happy about.
Marcus
Marcus
03:26 02 Jul 23
Located in Eltham the team at DIY Double Glaze did an amazing job at retrofitting our timber window frames with their LightBridge Double Glazed unit.Friendly staff, punctual, excellent pricing.17 individual windows approx 20sqm of glass.No more condensation.Couldn’t be happier with result.Highly recommend.
Sue Burne
Sue Burne
05:53 15 Jun 23
Very happy customer - had several windows and a couple of doors reglazed. Very efficient installation and a great result.
Juliane Reissle
Juliane Reissle
01:06 10 May 23
The team from DIY Double Glaze was amazing and the result is what we were hoping for. We bought our 20-year-old house two years ago and while the windows were in a reasonable condition for what they were (wooden sash-windows, single-glazing), the poor insulation and gaps were really bothering us. We looked into options for retrofitting as well as entirely new UPVC windows. While no doubt new frames and windows would have achieved an entirely different result and retrofitting can never do that, it's also about four times more expensive. We're talking some serious cash here! For us that wasn't feasible, so we went with retrofitting and are super happy with the result. It's warmer, less drafty (the guys also put additional sealing for those pesky gaps, which in itself helped a lot), we get less condensation and it's also more sound-proof. Aesthetically there's no drawback. We found the DIY team all the way through approachable, super friendly, patient with all our questions, and accommodating. They instantly created a trusting relationship and we felt in the best hands. Highly recommend!
Roger Ryan
Roger Ryan
23:47 08 May 23
We approached three different companies for double glazing quotes and choose DIY Double Glaze. They were meticulous in measuring our windows and provided a competitive quote with some pricing options for us to choose from. Their reputation is obviously good as we had to wait approx. 3 months before they could start on our job. We chose to have them do all the work i.e. no DIY from us. As the job unfolded we had 4 different crew members working at our home. All were professional, polite with a keen eye on detail. Of course there was some dust, glass / timber fragments etc and they did clean up each day. We are very pleased with the end result and the painting is now underway. More than happy to recommend Mark and his team.
Richard Howard
Richard Howard
03:01 07 Mar 23
Looks Fantastic and difference in the temperature inside is enormous; much more than I had hoped for! Was not an Easy install but was done perfectly after some effort from the installers. The Guy in the photo is the less shy of the installers on my job in front of my new four windows. I could not be happier and will use them again wherever I can.
Mark Dowling
Mark Dowling
10:03 30 Aug 22
I could not recommend Alan and the DIY double glaze team more highly. Alan was friendly, professional, easy to deal with and the cost was substantially cheaper than any other retrofit glazing or secondary glazing option I investigated (and cheaper on the day than originally quoted as the install took less time - honesty rarely found these days). I can't comment on the performance of the windows as yet, but the technical specs are on par or better than the other alternatives I investigated - they are true IGUs with argon gas and low-E coating. I would expect them to be superior to the secondary acrylic options, and a similar price.
Mike Nicol
Mike Nicol
01:10 06 Sep 21
Most cost efficient way to get double glazing in a existing dwelling in my opinion. The end result is of a very high level aesthetically (considering it's a retrofit), and thermally I don't believe you could get better (Alan believes his product (via the specific way he gets in manufactured) is actually closer to triple glazing and I believe him).His product, service and professionalism is as the other reviewers have stated, of a very high standard, and of great importance to me, honest and not commercially greedy.I was more than happy to pay for his time to install my windows given I don't have all the time, tools and experience required, however if you do, he provides detailed install instructions for free on his website.Highly recommended.
Luke Gibbons
Luke Gibbons
08:40 31 May 21
Alan was very easy to deal with and carefully laid out the details for us to understand. As we wanted noise reduction and thermal improvement, he was able to cater the window order to our needs. I worked with Alan to install the windows, which we did without issue. Even 6 months later when a window seal failed, Alan came over immediately and replaced it.
Wolfgang Maschek
Wolfgang Maschek
07:40 10 May 20
Alan is an idealist who is extremely knowledgeable and helpful. He has many tricks up his sleeves and is keen to share them. He is also very honest and warns you about the labor of replacing your windows. Read his web page carefully before you start.Getting the old glass out is VERY tedious and VERY time consuming. Getting the new glass in requires GOOD skills and GREAT patience with router and chisel, in particular if you have double-hung sash windows. A good workshop and good tools are required.At the end of the day it is all worth it and you have the double glaze windows you couldn't afford if someone else retro-fits them for you. Your house achieves much better energy preservation.The reason I give Alan only 4/5 * is that he didn't zero his brand new measuring device and as a result all my $5000 worth windows were fabricated too big, resulting in much more work adjusting the wooden frames. To Alan's credit, he came to my house and and fitted 1/2 of the windows himself, showing me how to do the rest. I am confident, by now his measuring gadget is accurate.I'd like to thank him for all his help and priceless advice.
Eleanor Street
Eleanor Street
07:05 20 Jul 19
Alan was great! We had a large room with lots of very large windows to double glaze. Alan provided the windows and installed them with my parter. Total cost was under half of what we had previously been quoted by another company and made it possible for us to do it. Very happy with quality and have already noticed a difference. Alan was also very helpful in suggesting other ways we could improve the efficiency of our home and was very prompt in responding to queries and generally great to deal with. Would definitely recommend.
Olga Kustova
Olga Kustova
12:47 06 May 19
Raica
Raica
04:55 24 Apr 19
I bought an oversized fixed double glazed window for my bedroom from DIY Double Glaze with Alan and I was really impressed with his knowledge and skill to deal and move such huge, heavy and delicate panel. Very professional service and I highly recommend.
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Don't replace your window frames!

If you have timber window frames or doors in decent condition, you don't need to replace them to achieve the full benefits of double glazing - simply replace the glass. Retain the character of your home, at 1/3 the price of replacing the window frames.

you install

You Install

You Install

Are you into DIY renovations? Good news: you can replace your windows with double glazing on your own. We've created a detailed guide to help you.

double grazed 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.
 

Why choose retrofit & Double Glazed over replacement?

Double Glazing is far superior to single glazing and secondary glazing in many ways. Single-glazed windows are the largest source of heat loss in winter and heat gain in summer. Plus, they create uneven temperature distribution throughout the house. Double glazing fixes this. All our units are Argon filled and with the choice of Low-E coatings, they insulate much better than standard units.

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Reduced Energy Usage Up To 60%

Do the right thing for the planet, and your hip pocket. Use less energy to heat your home in winter and cool in summer. This is particularly important in Melbourne where our temperature varies from season to season.

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Silenced Noise Up To 50%

Double glazing is effective at reducing unwanted noise. Reduce the loud traffic, noisy neighbours or irritating barking dogs. Our Hush Glass laminate is industry leading to turn the volume down by over 30% on standard double glazing.

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Reduced Condensation

Internal condensation makes your home humid. This is not just uncomfortable, but can be unsafe as it encourages mould and mildew growth. Double glazing drastically reduces the temperatures necessary for condensation to initially form by providing an insulating barrier. 

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Increased Security

Double glazing is much harder to break though through than standard glass, and our range comes toughened and thicker than standard glass, along with laminated options.

The Retrofit Team

Meet the heart and soul behind DIY Double Glaze - a dedicated team committed to making Melbourne homes more energy-efficient and comfortable, one window at a time.

Founded in 2011 by Alan Cuthbertson, we've spent over a decade providing high-quality, affordable double-glazing solutions.

Our mission?

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, ensuring your specific needs are met with the perfect solution.

Join us in our journey towards a healthier, more sustainable future.

diy double glazed retrofit window installation team

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Best Price Guarantee

Best Price Guarantee

Satisfied Clients 4.9/5 Reviews

Satisfied Clients 4.9/5 Reviews

10 Year Warranty

10 Year Warranty

If you have timber windows, most likely, yes! We can retrofit almost all types of timber windows, including Double Hung, Awning, Casement, Fixed, Clerestory, Doors, and Sliding Windows. If you are unsure, send us a photo of your window, and we'll check it out.

Double glazing retrofit can help you reduce energy costs, increase comfort, and improve the soundproofing of your property. It also enhances the appearance and value of your property. It is significantly cheaper than replacing the whole window frame with a new uPVC, Timber or Thermally broken aluminium but maintains similar performance. It is also more sustainable, as you are not creating waste by discarding the existing frame.

You do not need to replace your existing frames during the retrofit process. Our team will install the new glass pane to your existing window frame.

Yes, double glazing retrofit is a 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 environmentally friendly solution as it helps reduce energy consumption, thus reducing your carbon footprint. As we retain your existing window frames, we reduce waste but not discarding frames like some other solutions.