Sheep's wool insulation

ISOLENA Acoustic Underlay Roll with breathable Paper

Item number: TDP02500BR24
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.

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

  • 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 pallet with 22 x 1 item (0,55 ldm)



With the Prime programme, ISOLENA offers its customers a new additional benefit: guaranteed fast delivery times for selected items on pallets.
Items from the Prime programme are usually ready for dispatch within 3 working days.

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  

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® 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.

Bauaufsichtliche Zulassung ETA-07/0214
Nature Plus® 0103-1006-099-1
Wärmeleitfähigkeit λtr 0,038 W/mK
Dampfdiffusionswiderstandszahl μ 1
Spez. Wärmekapazität c 1760 J/kgK
Längenbez. Strömungswiderstand nach EN 29053 r = 4,1 kPa s/m²
Brandverhalten nach EN 13501-1 D-s2, d0; CH: RF3
Brandverhalten Akustikdeckenelement nach EN 13501-1* B-s1, d0
Bewerteter Schallabsoptionsgrad D. 50 mm nach ÖNORM EN ISO 11654 αw = 0,75
Schimmel-Wachstumsintensität nach EN ISO 846 0
*Gelochte Gipskartonplatte Dicke 12 mm, Lochung Ø 18/18 – 5 mm, ISOLENA Optimal Dicke 40 mm, 60 mm Hinterlüftung.