Sheep's wool insulation

ISOLENA Klemmfilz

Density: 30 kg/m³
Item number: Interior Finishing, Room Air Renovation – Partition Walls, Installation Level, Suspended (Acoustic-)Ceiling

Our ISOLENA Klemmfilz sheep's wool insulation is made of 100% wool and is renewable, durable, recyclable and manufactured without synthetic additives.

  • The clamping felt roll is the high-performance insulation with an exceptional thermal and sound insulation effect.
  • Improved sound-absorbing effect in partition walls.
  • For clamping between supporting structures, fasten mechanically.

We manufacture ISOLENA Klemmfilz in the following standard dimensions:

Art-Nr. Thickness

  Form of delivery
2 items
9,72 kg
10,80 m²
  set of 2 or
pallet with 16 x set of 2 (0,75 ldm)
2 items
8,64 kg
 7,20 m²
  set of 2 or
pallet with 16 x set of 2 (0,75 ldm)
2 items
10,80 kg
7,20 m²
  set of 2 or
pallet with 14 x set of 2 (0,75 ldm)
2 items
12,96 kg
7,20 m²
  set of 2 or
pallet with 12 x set of 2 (0,75 ldm)
2 items
11,52 kg
4,80 m²
  set of 2 or
pallet with 14 x set of 2 (0,75 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.

European technical approval ETA-07/0214 Download
Nature Plus® 0103-1006-099-1 Download
Thermal conductivity λtr 0,033 W/mK  
Vapour diffusion resistance factor μ 1  
Thermal conductivity c 1760 J/kgK  
Length-related flow resistance according to EN 29053 r = 10,2 kPa s/m²  
Fire behaviour according to EN 13501-1 D-s2, d0; CH: RF3  
Assessed degree of sound absorption D. 50 mm according to ÖNORM EN ISO 11654 αw = 0,85  
Mould growth intensity according to EN ISO 846 0  

Degree of sound absorption with a thickness of 50 mm according to ISO 354

f[Hz] 125 250 500 1.000 2.000 4.000
αs 0,44 0,60 0,78 0,98 1,08 1,14

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.



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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.
  • Quick installation, ideally suited for working overhead.
  • No dust mask and no protective clothing necessary.
  • Insert the insulation rolls from bottom to top and fix the surface felt to the rafters by stapling it laterally.
  • The rolls can be cut to length by tearing by hand or with the ISOLENA cutting device.