27/10/2026
What does Group 1 fire rating actually mean? 🔥
AS/NZS ISO 9705-2003 is a full-scale fire test that measures how wall and ceiling linings behave during a fire.
Here's how it works:
✔️ A test room is fitted with the lining material.
✔️ A corner burner runs for 20 minutes — 10 minutes at 100 kW, followed by 10 minutes at 300 kW.
✔️ Fire development is measured to determine whether and when flashover occurs.
Group 1 means flashover does not occur during the test. Groups 2, 3 and 4 reach flashover at progressively earlier stages.
Why does this matter?
Two acoustic panels may look identical but perform very differently in a fire. Choosing properly tested materials helps reduce compliance risks, particularly in commercial, education, healthcare and public buildings.
At Acoustic Panels Australia, our range includes Group 1, 2 and 3 lining options tested to Australian standards.
Save this for your next project specification.