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.
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).
All Knauf wall and ceiling linings tested had an Average Specific Extinction Area of <250 m2/kg as required by Specification C1.10, Clause of the BCA.
| Group No. | |
| MastaShield | 1 |
| SpanShield | 1 |
| Spangrid – Vinyl-faced | 2 |
| WaterShield | 1 |
| SoundShield | 1 |
| FireShield | 1 |
| MultiShield | 1 |
| Soundshield | 1 |
| Spangrid – Paper-faced | 1 |
| CurveShield | 1 |
| Spangrid – Polyolefin | 2 |
| Designpanel | 1 |
| Stratopanel | 1 |
| Permarock | 1 |
| Contrapanel | 1 |
| Opal | 1 |
| Trurock | 1 |
| Plaza | 1 |