Glass & Glazing

Welcome to the GLASS ASSOCIATION section of this website.

The Glass Association of New Zealand (GANZ) is an integral part of the Window Association.

You can return to this page from the Home Page or from

Go to Human Impact Safety Section

NEW!  Download (or use on-line) the GANZ Decision Tree for guidance on choosing the correct glass in accordance with NZS 4223 Part 3 (Human Impact). Click here

This section details what kind of glass must be installed in certain locations.

Glass can be very hazardous if not used properly. There are lots of ways to make glass safe, and these pages step you through the selection process in accordance with the New Zealand Standards NZS4223.


Go to Double Glazing Section

A double glazed window consists of two panes of glass, bonded to a spacer and separated by a sealed air space.

Because this space is fully sealed it acts as an insulator, helping keep your home at a comfortable temperature in all weathers.


Go to Energy Efficiency - WEERS Rating System

GANZ proudly supports the Safekids Campaign