
Acoustic Insulation Board
‘Coresorba' acoustic insulation board is used to absorb sound and improve sound insulation of walls, floors and ceilings.
Application
The board is used to absorb sound in the cavities of timber floors, stud partitions, independent acoustic ceilings and floating acoustic floors. 'Coresorba' board is also used with decorative acoustically transparent facings as independent sound absorbers on walls and ceilings.
Composition
‘Coresorba' acoustic insulation boards are manufactured from resin bonded acoustic glassfibre which is compressed to form unfaced 25mm thick boards.
The basic glass fibre insulation is compressed under heat and pressure from 100mm to form a 25mm thick board. This thinner compressed board retains all the acoustic properties of the 100mm insulation but in a more practical board which is more rigid and easier to cut and handle.
Standard nominal size: 1200 x 900 x 25mm thick (other sizes available on request)
Approximate weight: 3 kg/m²
Natural colour: Yellow
Availability: Normally a stock item but check on availability as this is a popular and fast moving product.
Price: £17.00 per board + Carriage and packing + v.a.t. Minimum order is two panels.
Fire Properties
The ‘Coresorba' acoustic insulation board meets BS 476 Part 6 & 7, Class 1 and Class 0
Thermal Conductivity
The ‘Coresorba' acoustic insulation board is also an excellent thermal insulation material having a k value = 0.037 w/m²k
Typical General Applications
Please contact our technical department for specific project applications.
Plasterboard stud partition cavity acoustic infill
Typical improvement with Coresorba board – up to 5 decibels in airborne sound

Timber floor joists acoustic infill
Typical improvement with Coresorba board – up to 4 decibels in airborne sound
Isolated sound reducing wall construction
Typical improvement – up to 10 decibels in airborne sound

Timber acoustic floating floor construction
Typical improvement – up to 8 decibel in airborne sound and up to 7 decibel in impact sound

Concrete acoustic floating floor construction
Typical improvement – up to 4 decibel in airborne sound and up to 16 decibel in impact sound

Isolated sound reducing ceiling construction
Typical improvement – up to 10 decibel in airborne sound and up to 11 decibel in impact sound

Sound absorption ceiling or wall lining to reduce reverberation time

Sound absorption performance :-
Absorption coefficient (Hz) |
125 |
250 |
500 |
1,000 |
2,000 |
4,000 |
NRC |
Class |
With 100mm air gap |
0.38 |
0.92 |
0.96 |
0.93 |
0.99 |
0.97 |
0.95 |
A |
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