What we do

What we do

Modern living room with double glazed windows and doors

Windows are a huge part of your home’s appeal. They give you natural light and make every room feel more open, airy and alive.

  • Retrofit double glazing is a more affordable option than getting new joinery.

  • How much does it cost to retrofit? It is a very difficult process to offer an approximate price before assessing the home. When we assess the home, we are looking for several different variables that will achieve the desired results in your home and, in turn, contribute to the cost of the retrofit installation.

    • These variables include:

      • The age, condition of your existing joinery, volume of glass and access to your home.

      • Compatibility of your existing joinery with new double glazed units.

      • Double glazing makeup requirements to comply with the current Building Code, and achieve the desired performance results.

  • Check out our services below and request a free measure and quote

Get a free quote
The process of retrofitting aluminium joinery

What is retrofit?

In simple terms retrofitting is the process of upgrading your single glazing to new energy efficient double glazing. Click the link below to find out more.

Learn more
Family dancing in their home with double glazed windows

What are the benefits of retrofit?

There are many benefits to retrofitting double glazing in your home. A key one is to improve the thermal insulation or to keep your home warm in winter.

Lear more

Our retrofit double glazing range

We have the biggest and best double glazing range in New Zealand. Because we manufacture locally, our glass technology is designed specially for New Zealand's diverse climate.

Learn more
The process of retrofitting aluminium joinery

What is retrofit?

In simple terms retrofitting is the process of upgrading your single glazing to new energy efficient double glazing. Click the link below to find out more.

Learn more
Family dancing in their home with double glazed windows

What are the benefits of retrofit?

There are many benefits to retrofitting double glazing in your home. A key one is to improve the thermal insulation or to keep your home warm in winter.

Lear more

Our retrofit double glazing range

We have the biggest and best double glazing range in New Zealand. Because we manufacture locally, our glass technology is designed specially for New Zealand's diverse climate.

Learn more
condensed windows in aluminium windows

Up to 50% of heat is lost through your windows and doors

Choosing the right Low E glass can make a real difference to your comfort, keeping you warm in winter, cooler in summer and reducing your power bills.

*MBIE Consultation Document Building Code 2023

Why choose Retrofit?

Retrofit double glazing by Metro Glass has been leading the New Zealand glass market for more than 35 years through better glass technology.

Quality and nationwide service

All our double glazed units are factory sealed and manufactured locally by Metro Glass with the highest standards of quality control. We have locations from Northland down to Invercargill that provide the Retrofit double glazing service.

Factory making double glazed glass

Innovation and range

We have the biggest and best double glazing range in New Zealand. Metro Glass are continually investing in new technology and processes to enhance energy efficiency, aesthetics and functionality, and make it accessible to everyday homeowners.

Sustainability

True sustainability is a journey. We recycle 99% of all waste glass from our plants right here in New Zealand, going into products such as home insulation and glass bottles.

Quality and nationwide service

All our double glazed units are factory sealed and manufactured locally by Metro Glass with the highest standards of quality control. We have locations from Northland down to Invercargill that provide the Retrofit double glazing service.

Factory making double glazed glass

Innovation and range

We have the biggest and best double glazing range in New Zealand. Metro Glass are continually investing in new technology and processes to enhance energy efficiency, aesthetics and functionality, and make it accessible to everyday homeowners.

Sustainability

True sustainability is a journey. We recycle 99% of all waste glass from our plants right here in New Zealand, going into products such as home insulation and glass bottles.

Couple talking in home, while looking at double glazed windows online

Find out if retrofitting is right for your home

We understand that each home is different, our expert Retrofit consultant will assess your home, and recommend a tailored solution for you and your budget.

Get a quote

CHRISTMAS & NEW YEAR HOLIDAY CLOSURE: All Retrofit branches will be closed from 12pm Friday 20th December, returning Monday 13th January. Have a safe & happy holidays!
SUMMER PROMOTION - Get a FREE UPGRADE on your Retrofit Double Glazing quote. Use promo code: FREEUPGRADE25. Request your free quote here. Terms apply.