Thermal Double Glazing

1300 982 924

Double Glazed Replacement Windows

Replacing Your Existing Double Glazed Windows & Doors.

Renovating your house can be a daunting task, but we are here to help!

Your windows and doors are most likely one of the major contributors to thermal loss and gain in your home, leading to higher energy use and lower comfort levels. So it makes sense to consider replacing your windows and doors and installing double glazing.

However, not all double glazing is made equal. There are many options out there and it is important that you do your research to ensure you are getting the best bang for your buck. uPVC is the best material to house double glazed glass units for a number of reasons, so its not surprising that it is the most widespread window and door profile product in use worldwide.

Why uPVC is the Ideal Material for Replacement Windows

uPVC has great thermal and insulting properties as it does not conduct heat like aluminium does. There is not much point putting a nice double glazed glass unit inside a metal frame that itself conducts heat into and out of your home.

uPVC is also a very stable material and has limited expansion and contraction with temperature change, unlike traditional timber and aluminium frames. This means that your double glazed glass unit is held securely, so the two panes of glass have less movement relative to each other, reducing the chance of leaking and breaking.

Combine these two benefits with low maintenance, weather resistance (including salt air), high noise reduction and a host of other benefits, uPVC is a smart choice in modern building.

Our uPVC windows and doors are all custom measured and made to suit your home. We can retain the style of your original windows to preserve the character and charm of your home, or redesign them with a fresh modern look.

Our qualified installers have a solid background in the building industry, so regardless of your building type, be it weatherboard, brick or something else, we have the knowledge to make the experience of replacing or fixing your double glazed windows as straightforward and stress-free as possible. Read More

A New Lease of Life With Replacement Double Glazed Windows

When refurbishing a property, it is tempting sometimes to take the cheapest option with a make-do-and-mend approach.

Sometimes patching up can work but often you’re just delaying the inevitable and the better option would be to bite the bullet and get the job done from scratch. This can certainly be true of windows because they are such a fundamental part of a building. Get the windows wrong and you jeopardise the whole project. One example is double-glazing existing windows. While this option can be a quick fix you will miss out on all the benefits modern uPVC window frames have to offer. If your chosen replacement windows are double glazed, – and in this day and age, especially in Melbourne, they should be – getting it right can ensure the future stability and integrity of your home, and that affects its resale value. If you plan to keep the property long-term, getting the right windows can save you a fortune in heating or aircon bills, and if you’re planning to sell in the not-too-distant future, you don’t want prospective buyers looking at the windows and seeing that they will need to be replaced. Either way, double glazed window replacement in Melbourne should be undertaken as a priority and custom made uPVC windows are the way to go.

Why Should Replacement Windows be Double Glazed in Melbourne?

Here in Melbourne, the climate is not as predictable as in other parts of the country and there are times in this fine place when you’re trying to keep the cold out and the heat in. To replace windows with double glazing is the only sensible thing to do and will therefore soon be stipulated by the national construction code. In addition to saving money, it’s all part of preserving the planet’s resources, because running an energy-efficient building is now a responsibility any good citizen must accept and double glazed entry doors and windows are the first step.

Protect your Investment

Protecting your investment is a fashionable phrase that applies in many spheres of life, and for most people, the biggest, most important investment is in bricks and mortar. Whatever else happens in our life, having your real estate is sitting there in good condition, can be the foundation that keeps everything stable. We can live in it, work in it, rent it out and live off the income or borrow against it for something else we need or want. Double-glazed window replacement in Melbourne is a key element in our stability because it’s a crucial part of the health of the property itself. Windows affect the ambience and the structural integrity of the building. We’ve got to keep the elements out, keep the place dry and maintain the temperature inside to keep everything in good condition.

It is therefore crucial to have good quality replacement double-glazed windows like the ones offered at Thermal Double Glazing.

Why Replacing Windows with Double Glazing is the Obvious Decision

If you bought this house because you liked it, but there was one glaring fault – the windows – the answer is simple: replace them.

When it comes to window replacements Melbourne is one of the prime contenders for improvement. That’s because of the weather. We have real weather around here, and that means rain and wind sometimes. Replacing windows with double glazing allows you to keep the draughts out and control the temperature in the building.

When we carry out window replacements in Melbourne, we remove what’s there – carefully and cleanly – and install our state-of-the-art units, what you will notice most is a dramatic improvement in the ambience of the building. Warmer, quieter, cosier, more reassuring. You will also notice lower energy bills because you’re keeping that expensive heat inside, not letting it waft out of the windows so you have to generate and pay for some more. Combined with double glazed uPVC doors, Melbourne weather has nothing on you.

How to Get Started Towards Window Replacements in Melbourne

Have a good look at all the options on our website to weigh up the options as regards styles, types of glass etc. There are many different options of  timer look double glazed windows and aluminium double glazed windows  in Melbourne. Then just give us a call, email us or fill in the online enquiry form. We’ll give you a quote and once you’ve accepted it we will come and set about bringing your home into the 21st century. It’s the obvious thing to do. 

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We Have Over 50 Glowing Organic 5 Star Google Reviews


When it comes to double glazing, we know our stuff. But there’s a lot more to replacing your old windows than the product itself. 

Our mission is to help people create comfortable, safe homes. We do this by combining high performance double glazing with quality workmanship during the installation.

We aim to get nothing but 5 star reviews. 

Not because we want to brag about (although we will). We want these reviews because it means we have done everything in our power to ensure our customers get not only a great product, but a wonderful experience throughout the entire process. And the comfortable home they are dreaming of!

Moo CowMoo Cow
21:57 28 Feb 24
Thermal Double Glazing were professional and courteous from the first point of contact all the way through to the end of installation. Michael, Ritchie 😉 , Shaun, and Izzy were all very polite, respectful, and went out of their way to accommodate our requirements. The installation was excellent and the end result of our new windows is second to none. My wife and I continue to say to each other 'What a great decision this was, the windows look so good and the house is so much quieter and cooler!'. Thank you to the whole team, we couldn't be happier!
Zoltan NagyZoltan Nagy
09:36 20 Feb 24
Small company, offered good price.Work was done according to the schedule and in good quality.Friendly management and team members.Recommended.
Luke RobinsonLuke Robinson
10:04 14 Feb 24
We needed to replace our original 1960s steel framed windows with 3mm glass. We had eleven companies quote for the job, but it was only Thermal Double Glazing who were able to promise they could replace our windows without damaging or needing to replace our beautiful hardwood frames/sills or need to replace our blinds. It was very important to us to maintain the character of our home and Michael (the director) with a building background was the first to promise that his team could and would do this and also acknowledge our wishes without making us feel as though we were asking for the impossible. It was also refreshing not to experience the hard sell or pathetic sales tactics that many of the other companies employed. During the quoting process all questions were answered by Michael with honesty and respect. We expressed our desire to have our windows installed before Christmas if at all possible. Michael did everything he could and made it happen.While Thermal Double Glazing were not the cheapest quote we received, the product (German designed, Australian Manufactured uPCV), the installation and the aftercare has been exceptional as promised. The installed windows have resulted in a massive noise reduction, minimal loss of heat and a constant and comfortable house temperature. While we are yet to have our first winter with the windows, we are hopeful they will fix the condensation issues we were experiencing with our paper thin windows. The installation process was seamless and carried out very professionally by Steve, Shawn and Izzy. The team were respectful at all times and ensured that our young family were part of the process and explained what they were doing to help the kids make sense of what was happening to their house. Steve was more than happy to address minor issues after installation (he identified a minor hole in one of the fly screens) and fixed them quickly and without hesitation.We are so happy with our windows, and are thankful for the Thermal Double Glazing team for making the process smooth, for completing their work to a very high standard, and for being respectful and pleasant in all interactions (massive shout out to Steve!). Big thanks to the whole team! Highly recommend Thermal Double Glazing.
09:46 06 Feb 24
The team did a great job of integrating the installation in and amongst all of the other building work that was being undertaken on our home and we love the new windows, stack back sliders and bifold doors that they have installed. The mechanisms are lovely and the quality is excellent. They have transformed our home.
Fabian FoglianiFabian Fogliani
03:25 05 Feb 24
I cannot speak highly enough about the product and professionalism of installation.Both Michael and Steve have been a pleasure to deal and communicate with.The windows themselves are absolutely amazing and beyond our expectations, so much so, that we will be fitting out our whole house in the future.Once again, thank you so much Michael and Steve, who did a great job installing them, but also took pride and great care to not cause any damage and also tidied up and vacuumed the rooms he had done the work in.
Tanya JulsTanya Juls
07:30 16 Oct 23
Thank you Michael and your team for installing the new windows. In Autumn this year I had Thermal Double Glazing replace original single glazed aluminum framed windows with double glazed uPVC windows. I held off my review until winter was over, I wanted to see how they performed. Reducing the cold inside the house was the main reason for replacing the windows. I can very happily say, I am extremely happy with the outcome. In the house, overnight it wasn’t as cold as pervious years, and no more condensation on the inside of the windows in the morning. The added bonus, I no longer hear the neighbours pool filter running or the other neighbours split system air conditioner, it dramatically reduced the noise. The whole process was smooth from start to finish. Michael came to measure for 10 windows and 1 sliding door. He listened to what I wanted to achieve and came up with great suggestions, a smart slide door – it glides so smoothly and effortlessly, best advice. And big picture window with a side tilt turn window, to take full advantage of the garden view and it makes the room look bigger. Steve and Shaun are such great workers, left the place neat and tidy at the end of the day and respectful of someone else’s home. It was a pleasure to have them working in the house. And for me, who is into sustainability, it was an added bonus to know this company is also, and is a partner with the Plant-A-Tree-Program. I can highly recommend Thermal Double Glazing, Michael and his team. Tanya R Chirnside Park Vic

Why Choose Upvc Double Glazing?

Live Comfortably. Save Energy.

Sound & Thermal Insulation

Also known as insulated glazing, double glazing is the use of two panes of glass to reduce noise and heat transmission in windows and doors.

Durable & Hard Wearing

uPVC is specially designed and formulated with added UV stabilisers to ensure that our products remain stable and robust even under the harsh Australian sun.

Sustainable & Recyclable

uPVC can be recycled up to seven times without any compromises in terms of material quality.

Exceeds Australian Standards ​U 1.0 - 2.3

With double glazing, we use argon to fill the gap between the panes, dramatically reducing transmission of heat and sound.

High Security

Our products come with multi point locking systems and toughened glass as standard, giving you piece of mind that your home is safe & secure.

Low Maintenance

Primarily made from salt, uPVC or unplasticised polyvinyl chloride is the best window and door material today.

BAL 40 Bushfire Rated

Certified up to BAL 40 with appropriate screening solution

Custom Made for Your Existing Home or New Build

Made locally in Melbourne to suit your design, colour, glass & budget requirements.

10 Year Warranty

Comes with a 10-year manufacturer’s warranty instead of industry standard of 7 years.

Our Full Circle 360° Guarantee

We have full belief that we can transform your house into the comfortable home you’re dreaming of. We are so confident that we are willing to guarantee every stage of the process for you. 

With Thermal Double Glazing you can replace your old windows and doors with brand new uPVC double glazing risk and stress free.

Do you have questions?

Get in touch to discuss any questions you may have related to double glazing. Our team will be happy to help.

1300 982 924

Visit Us

Inside Home Innovations Centre
10/111 Cranbourne Road, Frankston VIC 3199


Book in your free design consultation or get a quote

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