Industry Standards

SFA 3503-03:2005 Window & Glass Association Voluntary Specification for Anodic Oxide Coatings (pdf)

Specification 110227:2011 Window & Glass Association Industry Standard for PC Appearance In-Situ (pdf)

Specification 170103:2012 Window & Glass Association Industry Standard for Glazing and Other Seals (pdf)


Glazing Blocks

The Guide to Setting Blocks serves as a reminder of the importance of correct setting block use. An important part of the glazing of glass is the support of the pane and its relationship to the frame it sits within. The intent of this Guide is to reinforce and assist in the correct use of these very important components, which are critical to the longevity of the glazing.  The Guide is divided into two parts:

  • Part A describes the correct use and installation of Glazing Blocks and borrows much of its content from NZS4223.1:2008, simply because the Standard accurately reflects age old industry principles in the use of all types of glazing blocks.
  • Part B covers the specification of the materials used in their manufacture and supersedes the “WANZ Specification 140307” referred to in NZS4223.1:2008, which also raises the importance of correct material selection.

The correct use of glazing blocks is a requirement of the Building Code, Clause B2 – Durability.  Read the Guide here


Barrier Design Guide

The correct design of barriers and balustrades, especially glazed versions, is incredibly important from a safety perspective. The Window & Glass Association Barrier Design Guide presents an overview of the regulations and is based on the MBIE version published in 2012, but includes recent updates from NZS4223.3:2016 and NZBC Clause B1/AS1.  Read the latest (pdf) version below:

Window and Door Hardware – Product Performance

In 2019 the Window & Glass Association adopted two Industry Codes of Practice applicable to hardware used on residential windows and doors. These Codes were created to help customers and consumers select hardware appropriate for New Zealand conditions, by providing surety regarding the structural strength and durability of the products they purchase. The performance requirements have been selected as they affect, not only the longevity of the hardware, but also have an impact on the overall performance of the window systems they form an integral part of.


Routine preventative maintenance in accordance with the manufacturer’s instructions is essential to ensure that hardware products achieve their intended useful life.

Certification of hardware

Only products that have been tested and demonstrate compliance with both Codes, meet the industries performance requirements and can be labelled using the Association Tick.

TT-ICP-002 NZ covers “Durability and Corrosion Resistance” requirements.  Download here.

NZ-ICP-003a covers “Structural Strength” requirements.  Download here.