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Retrofit Double Glazing Experts

Comfort you can feel, quality you can trust.

High-performance retrofit double glazing, installed into your existing frames 

At ComfortGlaze, we make homes warmer, quieter, and more energy-efficient by upgrading your existing windows with modern double glazing. Our experienced team installs new insulated glass units into timber and aluminium joinery, delivering lasting comfort, improved insulation, and reduced condensation without the need for full window replacement.

Retrofit Double Glazing Installers

Beat the Winter Rush!

Pre-winter installation slots are limited. Lock in your double glazing now and enjoy improved comfort, reduced condensation, and peace of mind before winter sets in.

- Pre-Winter Sale -

Get 15% Off

Our Services

Trusted By Kiwi Home-owners

See why homeowners across New Zealand trust ComfortGlaze to upgrade their homes with energy-efficient double glazing.

Michelle Barrett

Testimonial

We started using Comfortglaze last year for a few rooms, and have called them back several time to do more windows in our home. Customer service, communication and onsite jobs have all been smooth sailing and well executed. Each team member that has come to our home has been professional, friendly and has done an awesome job. Well done team. So happy to have partnered with you with our biggest asset. We are not finished yet, so you will see more of us! Thank you!

The Barrett Family.

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Most banks offer low interest home loan top-ups for double glazing.

Timber Windows, Retrofit Double Glazing
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High-Performance Double Glazing

Our double-glazed units are manufactured using world-class components and industry-leading global technology. Each unit features a thermally improved warm-edge spacer that bonds the glass panes together, helping retain argon gas for long-term performance. Combined with argon-filled units and high-performance Low-E glass, this system delivers excellent thermal efficiency and comfort.

Book Your Free Quote

Ready to improve the warmth and comfort of your home?

Our team will assess your existing windows, explain your options clearly, and provide a detailed, no-obligation quote.

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