OWA suspended ceilings acoustic fibre metal entrance ceilings
Sound Insulation
Suspended ceilings improve the insulation value of a soffit. With an OWAcoustic ceiling this can be up to 10 dB, i.e. a reduction of half of the audible sound.
Noise from flanking paths
A great deal of attention is given to ensuring that the ceiling provides the maximum level of sound insulation but it should be remembered that sound will also find its way through the walls (flanking paths). Attention should therefore be given to the room as a whole when addressing the issue of sound insulation.
Various services such as HVAC, plumbing, electrical and telecommunication systems can be concealed in a ceiling void. However some may create sufficiently high levels of noise to be disconcerting, as well as annoying, to the occupants below. Dependent on the type selected, an OWAcoustic panel can provide noise reductions of 18 to 36 dB.
Light Fittings, etc.
Harmony
Where service elements such as light fittings, loudspeakers and grilles break into the ceiling plane, care should be taken to ensure that any gaps or holes left are stopped or at least kept to a minimum.
The room to room insulation between two adjacent rooms that have a common ceiling void is described in EN 20 140-9.
Pattern | Thickness | D n,c,w |
| Harmony | 15 mm | 31 dB* |
| 20 mm | 34 dB* | |
| Plain | 15 mm | 42 dB* |
| 20 mm | 45 dB* | |
| Constellation | 15 mm | 35 db* |
The addition of a mineral wool overlay can improve the room to room insulation value of an OWAcoustic ceiling by approximately 2 dB per 10 mm. Janus is a special ceiling tile designed to provide sound insulation of up to 49 dB in any of the available surface patterns. Using a pattern such as Harmony or Futura the optimum levels of both absorption and insulation can be achieved (more details see leaflets no. 570 and 557).
*Values for concealed grid systems (exposed grid systems approx. 2 dB less)
