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dual GLAZE™ Double Glazing is available nationwide

We are the largest network of double glazing experts. We can retrofit or replace existing aluminium and timber windows to help remove unsightly condensation and prevent harmful black mould, plus thermally reduce heat loss from your home. In addition to reducing heat loss, changing from single glazing to double glazed windows also offers the opportunity to reduce noise and or add solar control to your home.

Our Licensed Agents are Fabricators too.

The benefit of using experienced joinery fabricators is that not only can they replace your existing single glazed windows with double glazing, but they will assess your existing joinery for wear and can offer trusted advise on the safety, security and suitability of your replacement glass. And if necessary, can offer replacement doors and windows, or if you would like to change and enhance the appearance of your home.

All our double glazed units are factory sealed and manufactured with supporting warranties.

dual GLAZE™ Double Glazing is a part of the Altus Window Systems network and are the largest network of retrofit and replacement double glazing companies in New Zealand with over 13 years of industry experience.


We’re here to help Kiwi homeowners upgrade their existing single glazed windows to new double glazing

Let us help you make your home healthier, warmer, drier and comfier all year around by tailoring a solution that suits your home.

Collectively we have over 100 expert staff available to take your call and help satisfy your double glazing needs.

Contact us for a no obligation FREE quote, where we share and provide you with the best options to suit your home, from standard double glazing through to Low E, gas filled, sound reduction and or solar control.



Our objective is to minimise the environmental impact of our Aluminium manufacturing and operational activities.

Click here to view our partner sustainability objectives