Built for homes that need more from their windows – triple glazing delivers better energy efficiency, comfort and quiet.
Triple glazing uses three layers of glass separated by two sealed air gaps, typically filled with argon or krypton gas, to deliver a significant boost in both thermal insulation and noise reduction.
Compared to standard double glazing, the extra pane provides:
It’s a smart choice for cold climates, modern builds, or anyone who values peace and comfort inside their home.
Is triple glazing really worth the extra cost? If your home’s exposed to the cold, noise, or you’re building a future-ready home – triple glazing makes a real difference.
| Features | Double Glazing | Triple Glazing |
|---|---|---|
|
Glass layers |
2 |
3 |
|
Insulation (U-value) |
~1.1-1.8 W/m²·K |
~0.7-1.0 W/m²·K |
|
Noise reduction |
Moderate |
High |
|
Energy efficiency |
Up to 60% better than single glazing |
Up to 80% better than single glazing |
|
Condensation control |
Improved |
Excellent |
|
Cost |
$ |
$$ |
|
Best for |
Most New Zealand homes |
Cold zones, noisy areas, passive homes |
|
*Energy performance varies depending on frame material, glass type, gas fill, and coatings. Figures based on standard uPVC frames with argon gas and Low-E coatings. |
||
R-value and U-value measure how well a window insulates:
Our triple-glazed windows typically achieve:
That means they exceed H1 Building Code requirements in most climate zones – ideal if you’re aiming for a high-performance or future-proofed home.
In a typical 3-bedroom Christchurch home, upgrading from standard double to triple glazing could reduce winter heating demand by 20-25%. (Results vary depending on insulation, home orientation, and climate zone.)
The cost of triple glazing depends on:
While more expensive upfront than double glazing, it can pay off over time through lower power bills and improved comfort. We don’t list standard prices online because every home is different – but we’ll give you a clear, no-pressure quote.
Currently, EECA’s Warmer Kiwi Homes programme offers grants for heating and insulation, but does not cover window upgrades.
However, energy-efficient upgrades like triple glazing can:
For some homeowners, low-interest financing options (like council rates-based loans) may be available through sustainability programmes. Ask our team – we’ll point you in the right direction.
Triple glazing truly comes into its own in colder, windier regions of New Zealand – including Christchurch, Central Otago, Southland, and parts of the lower North Island where winter temperatures dip and heating bills climb.
It’s a smart choice for:
If you’re aiming for a quieter, warmer, more future-proofed home, triple glazing makes a measurable difference – not just in performance, but in how your home feels.
Triple glazing is heavier and more insulating, which makes it an ideal match for uPVC window frames.
All NK Windows are made with precision German-engineered uPVC frames.
We’re proud to help homes across Christchurch and the South Island stay warmer, quieter, and more energy-efficient – year after year.
Yes – triple glazing provides superior thermal insulation and noise reduction compared to double glazing. The extra pane of glass and additional air gap help:
It’s especially noticeable in cold climates or urban environments where quiet and comfort are a priority. It also helps reduce condensation in cold weather.
In many cases, yes – retrofitting triple glazing is possible, but it depends on your existing window frames.
We offer free consultations to check if retrofitting is suitable for your home.
Not in colder areas or if you’re building high-performance homes. It depends on your goals.
Not always – but they’re ideal. Triple glazing is heavier, so the frame must be strong and thermally efficient.
uPVC frames are:
If you have timber or aluminium frames, we can still provide options – it’s about matching the right product to your home.
Yes – our triple glazed units typically exceed the new H1 performance standards introduced in 2023, especially in colder climate zones.
Investing in double-glazed windows with uPVC frames ensures that your home is well-insulated, secure, and visually appealing. This choice not only meets the practical needs of modern living but also supports sustainable and energy-efficient building practices. Whether you are designing a new home or renovating an existing one, understanding the advantages of uPVC and double-glazed windows will help you create a comfortable, efficient and beautiful living space.
Our passion for creating homes filled with warmth and comfort extends to every detail. We keep it real, and when we understand your priorities, we can give you a variety of choices without overwhelming you with unnecessary options.
Visit our showroom and see our wide collection of samples to give you a real sense of how we will enhance your living spaces.
