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STEICO therm 40mm

STEICO therm 40mm


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STEICO internal natural wood fibre boards 

  • External insulation for roofs or floors with discontinuously laid coverings or under sarking felt.
  • Interior insulation for floors or roofs,
  • Sound insulation in partition walls
  • Insulation between rafters
  • Insulation under a screed
  • External insulation for walls
  • Behind a rain screen
  • Insulation for timber structures
Thickness [mm] Format [mm] Edge profile Weight [kg /m²] Pieces/ Pallet m² / Pallet Weight  / Palette [kg]
40 1.350 * 600 square edge 6,40 56 45,4 ca. 310
60 1.350 * 600 square edge 9,60 38 30,8 ca. 300
80 1.350 * 600 square edge 12,80 28 22,7 ca. 310
100 1.350 * 600 square edge 16,00 22 17,8 ca. 300




Board designation WF – EN 13171 – T4 – CS(10 \ Y)40 – TR2,5 – AF 100
Edge profile tongue and groove / square edged
Fire class according to EN 13501-1 E
Declared thermal conductivity λD [W/(m*K)] 0,038
Declared thermal resistance RD [(m²*K)/W] 1,0 / 1,5 / 2,0
Density [kg/m³] approx. 160
Water vapour diffusion resistance factor μ 5
sd value [m] 0,2 / 0,3
Specific heat capacity c [J/(kg*K)] 2100
Minimum compression strength [kPa] 40
Declared level of Airflow resistance [(kPa*s)/m²] ≥ 100
Raw material wood fibre, bond between layers


Internal insulation makes sense: It reduces heating costs and can greatly improve the internal climate. There are many areas of application and on many buildings internal insulation is the only affordable solution.

There are many reasons to insulate internally. When external elevations can’t be changed, when a single apartment in a block of flats is cold or when existing external insulations are insufficient or need improvement. Internal insulation also offers possibilities in buildings that are not often used such as holiday homes, meeting rooms and guest rooms.

With internal insulation systems the rooms heat up much quicker so the whole wall structure does not need ‘heating through’. In addition, the fixing of internal insulation is often much easier. There are no expensive scaffolding costs and the works can carry on regardless of external weather conditions.

As internal insulation is more critical than external insulation in terms of building physics it is recommended to use components that are compatible together in use.


Estimated delivery time 1-3 days