Fire Hazard Properties

Report FAR 4659 lists the Group Number and Average Specific Extinction Area of all Knauf wall and ceiling linings in accordance with AS 5637.1 : 2015.

AS 5637.1 determines what type of fire test the product must be subjected to; a small scale ‘cone calorimeter test’ to AS/NZS 3837 or a large scale corner/room test to ISO 9705.  The output of these tests are often referred to as ‘product fire test reports’.

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The BCA (Building Code of Australia) regulates the fire hazard properties of lining materials in Class 2 to 9 buildings according to Specification C1.10.  Wall and ceiling linings must have a low enough group number for use in certain areas depending on the Class of building. The group number indicates how quickly wall and ceiling linings spread fire with Group 1 products the slowest and Group 4 the fastest. Wall and ceiling linings in some buildings must also have an Average Specific Extinction Area less than 250 m2/kg.

Most of the tested Knauf wall and ceiling linings are Group 1 except plasterboard ceiling tiles covered with plastic (vinyl or polyolefin) and Comfortboard.  

All Knauf wall and ceiling linings tested had an Average Specific Extinction Area of <250 m2/kg as required by BCA Specification C1.10.  

ProductsGroup No.
MastaShield1
SpanShield1
SpanGrid - Vinyl-faced2
WaterShield1
SoundShield1
FireShield1
SpanGrid - Paper-faced1
CurveShield1
SpanGrid - Polyolefin2
Designpanel1
Stratopanel1
Permarock1
Contrapanel1
Opal1
TruRock1
Comfortboard3
Plaza1