| Practical Sound Absorption Coefficient (αp) | ||||||||||
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| Thickness | Suspension height | 125Hz | 250Hz | 500Hz | 1000Hz | 2000Hz | 4000Hz | Sound absorption class | αw | NRC |
| 35mm | 200mm | 0.45 | 0.60 | 0.90 | 1.00 | 1.00 | 1.00 | A | 0.90 | 0.85 |
Sound absorption is measured in accordance with ISO 354.
Sound absorption data αp, αw and absorption class are calculated in accordance with ISO 11654. Sound absorption properties of islands and baffles are quantified by the equivalent sound absorption area Aeq expressed as m² per item.
| Room To Room Sound Insulation | Dn,f,w = 41 | |
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Room-to-room sound insulation Dn,f,w (C;Ctr) is measured in accordance with ISO 10848-2.
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| Direct Sound Insulation | Rw = 21 | |
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Sound reduction index Rw (C;Ctr) is measured in accordance with ISO 140-3.
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| Reaction To Fire | A1 (EN 13501-1) | |
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Reaction to fire is classified in accordance with EN 13501-1.
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| Light reflection and light diffusion | 85% | |
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Light reflection expressed in % is measured in accordance with ISO 7724-2.
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| Humidity And Sag Resistance | Up to 100% RH. No visible deflection in high humidity. | |
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ROCKFON ceiling tiles are dimensionally stable even at humidity levels of up to 100% relative humidity and can be installed at all temperatures ranging from 0°C to 40°C. They can be installed during the very early stage of the build (when windows are not fully sealed). Their lightweight yet stable non-hygroscopic character minimises the final weight of the fully-installed ceiling. ROCKFON ceiling tiles are predominantly classified as Class 1/C/0N in accordance with EN 13964. Certain module sizes (width above 700mm) are Class 2/C/0N.
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| Cleaning | Vacuum, Damp cloth, Chemical resistance: resistant to diluted solutions of ammonia, chlorine and hydrogen peroxide | |
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Vacuum: The surface can be vacuum cleaned with a soft brush attachment. Damp cloth: The surface can be cleaned using a damp cloth or sponge with a slightly alkaline detergent (pH between 7 and 9) without alcohol, ammonia or chlorine. This may render the surface slightly shinier, so we recommend cleaning the entire surface evenly.
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| Hygiene | Stone wool provides no sustenance to microorganisms | |
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Stone wool provides no sustenance to the following microorganisms tested in accordance with JIS Z 2801:2000 and ASTM C 1338-96: – Escherichia coli – Staphylococcus aureus – Methicillin-resistant staphylococcus aureus (MRSA) – Stachybotrys chartarum – Penicillium brevicumpactum – Alternaria tenuissima – Aspergillus niger – Sporobolomyces roseum – Rhodotorula rubra
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| Environment | Fully recyclable stone wool | |
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| Indoor Environment | A selection of Rockfon products have been awarded the Finnish M1 emission classification for building materials and the Danish Indoor Climate Label for low emission products | |
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| Thermal Insulation | Thermal conductivity: λD = 40 mW/mK Thermal resistance: R = 0,85 m2K/W | |
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The thermal conductivity of products with a thickness ≥ 30mm is measured in accordance with EN 12667 and expressed in mW/mK. Thermal resistance is expressed in m²K/W.
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We provide customers with a complete acoustic ceiling system offering, combining sound absorbing ceiling tiles and wall panels with suspension grid systems and accessories.
