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Sonar dB 40

Sonar dB 40 is made from 30mm stone wool with a high-performance membrane on the back which reduces the transmission of noise from room to room. Sonar dB 40 provides enhanced sound insulation as well as a high level of sound absorption.

In addition, its fire classification is A1 – the safest class possible.

Sonar dB 40 has a subtly textured surface, is easy to cut, and with its low weight of 5.0 kg/m² is also easy to install.

Go to Technical data

Jump directly to specification generator

With our Technical Specifications generator you are able to create your own specification within the different products to see how the combination of edges, installation systems, module size etc. affects the acoustic properties. Click on the above link to refine your choice first.

Assortment

EdgeModule sizeInstallation system
A24
D
E15
E24

Technical data

Direct sound insulation

Sound reduction index Rw (C;Ctr) is measured in accordance with ISO 140-3.

Room to room sound insulation

Room-to-room sound insulation Dn,f,w (C;Ctr) is measured in accordance with ISO 10848-2.

Sound absorption

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 AT expressed in m2/item.

Reaction to fire

Reaction to fire is classified in accordance with EN 13501-1.

The fire protection properties of ROCKFON ceilings have been tested and classified in accordance with European norm EN 13501-2 and/or national norms depending on requirements in national building codes.

Light reflection

Light reflection expressed in % is measured in accordance with ISO 7724-2.

Humidity and sag resistance

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). No acclimatisation is necessary.

Surface durability

The surface of some ROCKFON products is specially treated to provide enhanced durability and dirt resistance.

Cleaning

Vacuum: Surface can be vacuum cleaned with a soft brush attachment.

Damp cloth: 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.

Hygiene

Stone wool provides no sustenance to the following microorganisms tested in accordance with JIS Z 2801:2000 and ASTM C 1338-96:

  • Eschericia coli
  • Staphylococcus aureus
  • Methicillin-resistant staphylococcus aureus (MRSA)
  • Stachybotrys chartarum
  • Penicillium brevicumpactum
  • Alternaria tenuissima
  • Aspergillus niger
  • Sporobolomyces roseum
  • Rhodotorula rubra

Thermal insulation

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.

Environment

Indoor environment

Datasheet and brochures

Sonar dB
Sonar dB 40: DoP-RFN-0093-041-1

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