OPTIMA System - Isover

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OPTIMA System – An efficient sound insulation
For acoustic comfort indoors, a house needs to be well insulated against the noise outside. The
OPTIMA System, based on the mass-spring-mass principle, achieves ISOVER Acoustic Comfort
Classes, which generally exceed standard requirements for sound insulation. The OPTIMA System
safeguards personal privacy in the home, maintaining the well-being of its occupants.
Acoustic insulation of a construction is determined by the (weighted) sound reduction index Rw,
expressed in dB: the higher the Rw, the better the sound insulation.
The table below shows some examples of sound reduction for different types of support walls,
insulation and facing materials. Important: sound reduction of 10 dB causes 50% reduction of the
parceived noise!
Thickness of ISOVER Support +
Support glass wool with Facing Support only OPTIMA Gain
AFr ≥ 5 kPa.s/m 2 Rw (C;Ctr) in dB Rw (C;Ctr) in dB Rw+C in dB
Hollow concrete
blocks 200 mm + glue
100 mm Wood panelling 53 (-1 ; -2) 71 (-4 ; -11) 15
Hollow concrete
blocks 200 mm + glue
100 mm PVC panelling 53 (-1 ; -2) 67 (-3 ; -11) 12
Hollow concrete
blocks 200 mm + glue
100 mm
12.5 mm
Plaster board
53 (-1 ; -2) 76 (-4 ; -11) 20
Hollow concrete
blocks 200 mm + glue
75 mm
12.5 mm
Plaster board
54 (-2 ; -4) 68 (-3 ; -10) 13
Concrete 160 mm 85 mm
12.5 mm
Plaster board
58 (-1 ; -4) 71 (-2 ; -6) 12
Hollow bricks 200 mm
+ glue
100 mm
12.5 mm
Plaster board
42 (0 ; -2) 68 (-2 ; -9) 24
Hollow bricks 200 mm
+ glue
75 mm
12.5 mm
Plaster board
50 (-5 ; -7) 66 (-3 ; -8) 18
Plaster tile 70 mm 85 mm
In multi-family buildings
12.5 mm
Plaster board
35 (-1 ; -3) 57 (-1 ; -6) 22
Sound absorbing elements installed on the walls (Picture 1) and ceilings can significantly reduce echo
in hallways. The OPTIMA System, with a perforated facing is ideal for such situations.