What is retrofit double glazing ?
Retrofit double glazing is the process of replacing existing single-pane windows with new double-glazed units while reusing the existing window frames. This involves removing the old single-pane glass and installing a new double-glazed unit into the existing frame, often requiring minor adjustments to the frame itself. It's a way to upgrade to the thermal performance and noise reduction benefits of double glazing without replacing the entire window.
About Kiwi Retrofit Solutions
Local & Trustworthy
Proudly Tauranga-owned and operated as part of the Bay Glass & Glazing family, your retrofit is made locally - supporting our community and ensuring faster service
We Manufacture In-house
Each retrofit is precision-crafted to fit your existing windows right here in Tauranga, giving us total control over quality and lead times.
On-the-Day Measure & Quote
No waiting—Beth visits your home, inspects windows, provides a quote, and answers your questions, all in one appointment.
Simple 1-2-3 Process
1
Free Window Assessment & Quote
We assess your windows & doors at your home - measurements and quote provided on the spot
2
Acceptance & Production
Pay a 50% deposit to start; balance on completion. We then manufacture your units with an approx. lead time of 4 weeks
3
Hassle-Free Installation
We schedule a convenient time, fit the units with minimal disruption, clean up. Job complete! Remaining balance now payable.
Why Double-Glaze Your Windows?
We all know double glazing keeps your home warmer in winter and cooler in summer—but what does that really mean, and why is it so essential?
By installing two panes of glass separated by an insulating air or gas layer, double glazing dramatically slows down heat transfer. That means you’re not wasting precious warmth during chilly months or letting unwanted heat flood in on sunny days—so your heating and cooling systems don’t have to work as hard. Better insulation translates into significant energy savings—Kiwi homeowners often report cutting their heating and cooling costs by 10–30%, while heat loss through windows can be reduced by up to 80% .
But the benefits go beyond temperature control.
Double-glazed windows also reduce condensation—protecting your home from damp, mould, and the health risks that come with it.
Plus, they block up to 60% of outdoor noise, creating a peaceful indoor sanctuary—even if you live near a busy street.
There are added bonuses too: stronger security, less UV fading of furnishings, and a boost to your property's value.
So double glazing isn’t just a comfort feature—it’s an investment in year‑round living quality, energy savings, healthier air, and long‑term home value.
Book a free, no obligations
quote with Beth
