Sheep's wool insulation

ISOLENA Acoustic Underlay Roll with breathable Paper

Density: 100 kg/m³
Application: Floor

Our acoustic underlay roll with breathable paper is made of 100% wool and is renewable, durable, recyclable and manufactured without synthetic additives.

  • Footfall and impact sound insulation under floating laid floors.
  • Insulation with soda kraft paper on the upper surface for improved installation.
  • Suitable for underfloor heating.
  • Ideal walking comfort.
  • Full-area installation of the footfall sound insulation with kraft paper on the upper surface.

Form of delivery

We manufacture ISOLENA acoustic underlay rolls with breathable paper in the following standard dimension:

  • Art-Nr.: 150025
  • Thickness: 3,5 mm
  • Width: 1000 mm
  • Length: 25000 mm
  • Item/PU: 1 item
  • kg/PU: 8,75 kg
  • m²/PU: 25,00 m²
  • Form of delivery: 1 item or Pal22 = pallet with 22 pcs. (0,55 ldm)


Technical data

Nature Plus® 0103-1006-099-1 Download
Specific heat capacity c 1760 J/kgK  
Dynamic stiffness as per ÖNORM EN 29052-1 50,7 MN/m3  
Resonance frequency 59 Hz  
Extent of impact sound improvement up to 21 dB  
Sd-value 3,22 m  
Suitable for underfloor heating, low thermal insulation resistance 0,1 m2 K/W  

Ecological parameters

ISOLENA insulation materials have the following ecological parameters according to the NaturePlus® life cycle analysis report:

  • Use of non-renewable primary energy without the non-renewable primary energy carriers used as raw material (PENRE
    [MJ, lower calorific value]):  23,44 MJ/kg
  • Global warming potential Total of GHG emissions and CO2 storage (GWP 100 total): 0,83 kg CO2-equiv./kg
  • Acidification potential of soil and water (AP): 4,63E-03 kg SO2-equiv./kg
  • Potential for the formation of tropospheric ozone (POCP): 8,04E-04 kg C2H4-equiv./kg
  • Eutrophication potential (EP): 2,08E-03 kg PO4³-equiv./kg

IONIC PROTECT® Wool protection

IONIC PROTECT® is a biocide-free process developed by ISOLENA and protected by a trademark patent to protect wool.

Plasma ion treatment of the wool fibres protects them from all negative influences that can occur in construction. This gives moths and insects no chance to thrive. In addition, our products can be stored indefinitely thanks to the wool protection.

We present you with these terms in writing with the ECO/CUAP test report ECO-P16002-15017 and our product promise.



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