What is Retrofit Double Glazing?
Retrofit Double Glazing is the process of removing a single pane of glass and replacing it with thermally efficient Low-E double glazing. Low-E double glazing has an invisible metallic coating on the inside of the glass that reflects heat inside your home, keeping you warm all year.
For over 130 years Viridian Glass has been at the forefront of glass technology in New Zealand. The only glass our team uses is Low-E Glass by Viridian.
As customers of Viridian Glass New Zealand, our team has three different types of Low-E Glass that we can supply your home with: EnergySaver, Lightbridge and PerformaTech.
Fast Service, Professional Team with Viridian Glass
What is Retrofit Double Glazing?
Retrofit double glazing is the process of removing the existing single pane of glass in your windows and doors and replacing it with an insulated glass unit that also has a high-quality Low-E glass, which ensures your home is light, warm and comfortable all-year-round.
Are there different Glass Types?
As a home owner, you have many different options for choosing the right type of glass for your home. Our most popular option by far is LightBridge, a clear double-glazed unit that has Low-E glass, an invisible metallic coating that keeps warm air inside your home.
How long will it take to Retrofit?
We will be able to Retrofit most homes in New Zealand in just one day. A typical home has 30 panes of glass in total and a team of Retrofit Double Glazing installers are fast and efficient. The most important aspect of a Retrofit installation is the preparation before the installation takes place.
What is the Cost of Retrofitting?
This is a question we get asked a lot! Retrofit double glazing costs can range from $350 per pane to $800. There are many factors that need to be considered by our team. Age of existing joinery, the type of glass required, whether scaffolding is required, and of course, the size of your windows.
Retrofit Double Glazing will transform your home!
Increased Comfort
Low-E glass will transform your home, ensuring year-round comfort.
Increased Warmth
Offering three Low-E options, you can choose the warmth in your home.
Increased Privacy
With the addition of acide-etched glass, your privacy areas will be serene havens.
Increased Peace
Low-E glass paired with acoustic laminate will create a home paradise.
A lighter, brighter home
Our low-E glass for retrofit double glazing has a clear metallic coating that keeps the heat locked inside the home without sacrificing natural light. And, with 81% light transmission, it is the clearest Low-E glass available in New Zealand.
Always stay warm
Heat loss can be reduced by up to 80% using our retrofit system. The combination of low-e glass within a double-glazed glass unit with argon gas provides the ultimate solution for all homes, ensuring you’ll always be warm in your home.
An easy choice
Using our premium low-e glass, you will save 52% on electricity compared to standard double glazing. Capturing and trapping the suns heat and light allows your family to be more comfortable in a much more economical way.
Reduced Condensation
Viridian Retrofit double glazing will help significantly reduce condensation on your windows. This saves you all the hassle wiping and drying off your windows and window sills.
Lower Heating Costs
Because Viridian Retrofit double glazing helps reduce heat that is lost through your windows, your home will stay warmer and you can enjoy the added benefit of lower heating costs.
Reduced Noise
Viridian Retrofit double glazing provides better noise reduction than single glazing. By reducing the amount of outside noise that enters your home you can have a quieter and more peaceful interior.
Client Testimonials
Offers & Details
- 81% Energy Savings with LightBridge
- New Opening Windows
- Ten Year Warranty on All Viridian Glass
- Fast and Efficient Installation Methods
We have over 35 years of experience helping Kiwis make their homes warmer, drier, and healthier.
• Choosing a team of professionals who can recommend the right retrofit double glazing solution for your home is crucial.
• We have the biggest double glazing range in New Zealand suitable for all seasons.
• All our double glazed units are factory sealed, locally processed in New Zealand and come with a 10 year manufacturer’s warranty.
• We have branches nationwide with attractive payment terms and work with your budgets.
• Leave your details on the form and our team will be in touch about your tailored retrofit double glazing solution for your home.
Summer Promotion
Upgrade your comfort and energy efficiency: 15% off Retrofit Double Glazing, or a free upgrade to our new SolarGrey Low-E glass.
Terms and Conditions
• The 15% discount applies to accepted quotes with a minimum value of $5000.
• The upgrade applies to any of our current Low E alternatives, EnergySaver, LightBridge or PerformaTech. e.g. upgrade to premium Solargrey from EnergySaver for the same price.
• This promotion runs to the 31 March 2026.