Home > Companies > ROCKWOOL Ltd > Acoustic Slab

A high quality resin bonded, semi rigid, stone wool slab, designed to combine excellent acoustic, fire resistance and thermal performance with easy fitting into partitions.

The product is self supporting, will not slump or sag during the lifetime of the partition and is designed specifically to suit installation between metal studs at 400 and 600 mm centres.

Rockwool Acoustic Slab is CE and Key marked in accordance with BS EN 13162.

Non-combustible, achieving a classification of A1 in accordance with BS EN 13501-1.

Rockwool insulation products do not contain blowing agents with an ozone depletion potential (ODP) or global warming potential (GWP), are CFC-HCFC-HFC free and 97% recyclable. They will not react with metal components or cause loss of plasticiser from PVC cables and pipes.

Standard product features


1200 x 590 mm.

For steel studs at 400mm centres, cut 1200mm length into 3 equal (400mm) pieces.

Fire resistance:

Up to 90 minutes can be achieved. (Consult Rockwool for partition details).



  • 25 mm (To achieve Rw 40 dB in an internal wall ‘type B’ and comply with Building Regulations, Approved Document E, Section 5, use 25mm Acoustic Slab in a 50 mm metal stud cavity, faced with 12.5mm wallboard).
  • 47 mm for 50 mm cavity.
  • 67 mm for 70 mm cavity.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-70/385 Mineral wool slab insulation

Product specification

An important note about specifying





+44 (0)1656 862621

Product reference

Acoustic Slab


[25 mm]
[47 mm]
[67 mm]

Manufacturer details

14th Floor, Chiswick Tower,
389 Chiswick High Road,
London, W4 4AJ
Tel +44 (0)1656 862621
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