To prevent the formation of damaging moisture.


A natural, ecological, innovative thermal insulation board based on wood fibre bonded with hardboard for dry fit installation. The integrated vapour control, together with the hygroscopic properties of the wood fibre, ensures a controlled moisture transport which prevents the formation of damaging moisture.

Features and benefits:

  • Multi-layer insulation board with integrated vapour control.
  • Moisture buffering properties for a pleasant indoor environment.


To prevent the formation of damaging moisture.

General information


Wood fibre bonded with hardboard

Uniclass 2015

Pr_25_57_06_97 Wood fibre batt insulationPrimary


P10/212 Insulation fixed across inner face of stud walling

P10/217 Insulation slabs fixed to backing wall

P10/220 Sound insulation within timber framed separating wall

Specification data - Wood fibre batt insulation

Product Reference



52 mm

1.2 m²K/W thermal resistance.

72 mm

1.65 m²K/W thermal resistance.

92 mm

2.1 m²K/W thermal resistance.

Standard product features


Wood fibre bonded with hardboard.

Board size:

1020 x 600 mm.


Tongue and groove.

Technical characteristics:

  • Density: Insulating board: 180 kg/m³; composed board: 740 kg/m³.
  • Thermal conductivity (λd, to BS EN 13171): Insulating board: 0.043 W/mK; composed board: 0.14 W/mK.
  • Specific heat capacity: Insulating board: 2100 J/kgK; composed board: 1700 J/kgK.
  • Water vapour diffusion resistance coefficient: Insulating board: 25 μ; composed board: 60 μ.
  • Reaction to fire (to BS EN 13501–1): E.
  • Compressive strength (at 10% deformation): 70 kPa.

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