Acoustic Membrane
Flat Roof Solutions

Acoustic Membrane

The important extra layer.

Reflected sound is a problem experienced in many buildings, more commonly schools, airport terminals, retail units and manufacturing facilities. These premises often require a high-performance roof insulation to enhance the acoustic properties of the roof. ROCKWOOL Acoustic Membrane is a high performance, sound deadening polymeric layer used to enhance acoustic roof systems. An ideal acoustic solution for buildings requiring an exceptionally high acoustic performance, such as schools, hospitals, cinemas, airports, arenas and leisure developments.


In conjunction with HARDROCK® Multi-Fix (DD) acoustic roof systems, Acoustic Membrane will provide the additional mass required to meet very high acoustic specifications. This solution is suitable for light weight metal roofing systems and will improve sound insulation levels across a range of frequencies. 

  • A sound solution – improves reduction in both airborne noise transfer and rain noise
  • Save time and cost – ROCKWOOL Acoustic Membrane is supplied as a roll for quick and easy installation. 
  • System designed – as part of a fully tested acoustic system, Acoustic Membrane is designed to be completely compatible with other ROCKWOOL flat roof insulation solutions.

Product Properties

Thermal conductivity 0.45 W/mK
Water repellent 30 N/cm² (EN12311)

Product range and ancillaries

Item number External item number Country Thickness (mm) Width (mm) Length (mm) Packs Per Pallet m² Per Pack m² Per Pallet Weight (kg)
128098 128098 UK 2.5 1220 6050 24 7.38 177.14 5
128099 128099 UK 5 1220 4000 21 4.8 100.8 10

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