About Rockfon Blanka Activity
A 40mm version of the Blanka super white tile for rooms with high noise levels such as classrooms, open-plan offices and sports halls. The extra thickness improves absorption at lower frequencies, and it can be laid into 24mm grid, bonded or fixed direct to the soffit.
Key performance
| Sound absorption | αw: 1.00 (Class A) |
|---|---|
| Reaction to fire | A1 |
| Light reflection | 87% light reflection, >99% light diffusion |
| Wet-scrub resistance | Class 4 |
| Thermal insulation | λD = 40 mW/mK; R = 1.00 m2K/W |
| Edges | A24, B, C, E24 |
| Weight (kg/m2) | 6.4 |
| Cleaning | Vacuum; Damp cloth |
Source: Rockfon Blanka Activity datasheet, 04.2026. Figures quoted exactly from the manufacturer's datasheet; confirm with Rockfon before specifying.
Acoustic performance
| Edge / Thickness (mm) / Suspension (incl. tile - mm) | αw | Absorption class | NRC |
|---|---|---|---|
| 40 / 200 | 1.00 | A | 1.00 |
| 40 / 40 | 1.00 | A | 1.00 |
Selected rows; full table in the technical datasheet.