How To Inspect Glass?

EN673 is the European standard of measuring a U-Value for glass that is used in a building. All glass companies in New Zealand need to provide the U-Value of their glass solutions in relation to EN673 so that consumers can make informed decisions on the thermal performance of their glass.

How To Inspect Glass?

Glass is generally a supremely clear material, which makes it difficult to inspect. Thankfully, there is a standard in New Zealand (AS/NZS 4667:2016) that outlines the correct procedure for inspecting your glass:

  1. Stand 3m back from the piece of glass you are viewing.
  2. Ensure the glass is in an upright position.
  3. Look at the glass for not more than 60 seconds with a daylight background.

For more information, please refer to the attached document


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