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Class M1
Rockfon Blanka® Activity
40mm-thick acoustic ceiling tiles optimised for low-frequency sound absorption and speech clarity in high-activity spaces – with smooth, ultra-white (87% LRV), matte, and anti-static coating.
- Superb acoustics
- Inspiring design
- End-to-end support
Overview
Foster speech clarity in active spaces using the power of stone wool and low-frequency sound absorption – delivered in Rockfon Blanka’s signature coating. Versatile, bright, inspiring.
Experience the difference of Rockfon Blanka® Activity
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Optimised for speech.
The 40mm thickness is designed for busy spaces where every word counts, from classrooms to open offices, enhancing low-frequency absorption for speech intelligibility.
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Visibly brighter.
With an L-value of 94.5, the ultra-white fleece reflects 87% of light and diffuses over 99%, creating noticeably brighter spaces with flawless visual consistency.
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Near-seamless matte.
The coating is easy-install non-directional with a low gloss level of 0.8 GU, delivering a uniform appearance – even in critical side lighting – and without the glare.
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A lasting clean look.
Its anti-static, cleanable surface resists dust and everyday wear and tear, keeping the finish bright and low-maintenance with a maximised service life.
Case studies with Rockfon Blanka® Activity
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Discover more case studies
Browse projects from around the world with optimised acoustic design featuring Rockfon solutions.
Adolfsberg School, Knivsta, Sweden
LLP Arkitekkontor, 2025
Edges and sizes
Click the icons to view more details.
A24 edge - Visible grid
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| Dimensions | Recommended Grid | |
|---|---|---|
| 600x600x40 | ||
| 1200x600x40 |
Specifications
For more details about Rockfon Blanka® Activity please download the product datasheet or contact us.
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WhiteNCS S 0500-N
>99% light diffusion
L value: 94.5
Deep matt surface, perfect in critical side-light
Gloss: 0.8 gloss unit at 85° angle
No visible deflection in high humidity.
C/0N
Vacuum
Wet-scrub resistance: Class 4
Thermal resistance: R = 1,00 m2K/W
Certifications
CE Mark
Cradle to Cradle Certified
Indoor Climate label
Class M1
Sound absorption table
| Practical Sound Absorption Coefficient (αp) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Edge | Thickness mm | Suspension height mm | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | Sound absorption class | αw | NRC | |
| A24 | 40 | 200 | 0.55 | 0.80 | 0.95 | 1.00 | 1.00 | 1.00 | A | 1.00 | 1.00 | |
| B | 40 | 40 | 0.20 | 0.70 | 1.00 | 1.00 | 1.00 | 1.00 | A | 1.00 | 1.00 | |
Installation videos
Need help or advice?
Have a question about this product or need guidance for your project? Send us a message and we’ll get back to you.
Interested in buying Rockfon Blanka® Activity?
Get in touch with a local Rockfon office or find a distributor near you.