The Smarter Choice for Older Aluminium Joinery

Many New Zealand homes still have single-glazed aluminium windows that do little to retain heat or block outside noise. For older aluminium joinery, replacing the entire frame can be expensive, disruptive, or even impossible due to design or structural constraints. That’s where Magnetite makes the difference.

Our retrofit double glazing for older aluminium joinery is specifically designed to work with your existing frames. It enhances insulation, reduces external noise, and improves energy efficiency - all without removing or replacing your original windows.

Magnetite’s award-winning retrofit glazing system delivers proven performance, improving insulation and reducing noise by up to 70%. We assess your joinery, design a custom solution, and install it with precision and care.

With over 25 years of experience, Magnetite proudly services homes across Aotearoa through our network of licensed estimators, fabricators, and installers - mainly throughout the North Island.

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Advantages of Double Glazing for Older Aluminium Joinery

Retrofit double glazing offers many benefits for homes with original aluminium windows. It keeps your home quieter and more comfortable while lowering energy use and ongoing costs.

Magnetite provides a patented, award-winning retrofit double glazing system that works with older aluminium joinery others can't service. There’s no need to remove or replace your windows - saving you time, money, mess, and waste.

Noice Reduction

Thermal Comfort

Energy Efficient

Fits Existing Windows

Proven Results

Our window systems have been independently tested by the National Acoustic Laboratories in line with National Fenestration Rating Council (NFRC) regulations. Reduce up to 70% of noise through windows or doors with Magnetite secondary glazing solution.

View Noise Reduction Technical Data

Our window systems have been independently tested by the Window Energy Rating Scheme (WERS) in line with National Fenestration Rating Council (NFRC) regulations. Improve up to 70% of thermal efficiency of your windows or doors with Magnetite secondary glazing solution.

View Thermal Improvement Technical Data

Why homeowners choose Magnetite

Acoustic and thermal insulation

Our secondary glazing system is custom-designed for each home, offering excellent soundproofing and year-round thermal comfort. It’s independently tested and proven to reduce noise and heat loss by up to 70%, even for homes with older aluminium joinery.

Minimal impact on your home’s exterior

Whether it’s a character home, modern build, or multi-storey apartment, our glazing system preserves your home's existing appearance. There’s no need to alter or remove the original aluminium frames.

Increase in property valuecrease property value

Upgrading with double glazing for older aluminium joinery improves your home’s comfort, energy efficiency, and long-term appeal - making it a smart investment.

Sustainable living

Retrofitting your existing windows helps maintain a consistent indoor temperature without overusing heating or cooling systems. Lower energy use means fewer emissions. Our solution also reduces landfill by avoiding full window replacements.

Custom installation

Magnetite’s retrofit double glazing fits a wide range of aluminium window types, including sliding windows, casement windows, multi-panel windows, and more. We specialise in retrofitting joinery that other companies often cannot work with.

Double Glazing for Older Aluminium Joinery

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