Soprema UK Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

High-performance, vapour-permeable and pressure-resistant insulation board.

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The board is universal and multifunctional suitable in the roof, the wall, the facade and the floor.


A high-performance pressure-resistant, vapour permeable, natural and ecological thermal insulation board based on wood fibre. The board edges from 140 mm thickness have a rebated finish to avoid thermal bridges. The board has excellent sound insulation properties due to the porous structure.

Features and benefits:

  • Pressure-resistant, universal and multifunctional.
  • Excellent at insulating against thermal losses in winter and heat transmittance in the summer.
  • Possesses excellent sound-insulation properties.
  • CE marked.


The board is universal and multifunctional suitable in the roof, the wall, the facade and the floor.

General information


Wood fibre

Uniclass 2015

Pr_25_57_06_97 Wood fibre batt insulationPrimary


P10/10 Loft insulation

P10/125 Insulation laid between ceiling ties/ joists

P10/140 Insulation fitted between rafters

P10/15 Insulation fitted between rafters

P10/165 Insulation to eaves

P10/170 Insulation to loft access hatches

P10/185 Soffit insulation

P10/20 Insulation to loft access hatches

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

P10/240 Insulation fitted between floor joists

P10/250 Insulation supported between floor joists

P10/40 Insulation fitted between studs

P10/42 Mineral wool insulation slabs fixed to backing wall

P10/45 Insulation laid between floor joists

P10/50 Insulation supported between joists

Specification data - Wood fibre batt insulation

Product Reference



40 mm

Straight edges, 1.05 m²K/W thermal resistance.

60 mm

Straight edges, 1.55 m²K/W thermal resistance.

80 mm

Straight edges, 2.1 m²K/W thermal resistance.

100 mm

Straight edges, 2.6 m²K/W thermal resistance.

120 mm

Straight edges, 3.15 m²K/W thermal resistance.

140 mm

Rebated edges, 3.65 m²K/W thermal resistance.

160 mm

Rebated edges, 4.2 m²K/W thermal resistance.

180 mm

Rebated edges, 4.7 m²K/W thermal resistance.

200 mm

Rebated edges, 5.25 m²K/W thermal resistance.

220 mm

Rebated edges, 5.75 m²K/W thermal resistance.

240 mm

Rebated edges, 6.3 m²K/W thermal resistance.

Standard product features


Wood fibre.

Board size:

1100 x 600 mm.

Technical characteristics:

  • Density: 110 kg/m³.
  • Thermal conductivity (λd, to BS EN 13171): 0.038 W/mK.
  • Specific heat capacity: 2100 J/kgK.
  • Water vapour diffusion resistance coefficient: 3 μ.
  • Reaction to fire (to BS EN 13501–1): E.
  • Compressive strength (at 10% deformation): 50 kPa.
  • Tensile strength (perpendicular to faces): 2.5 kPa.
  • Waste code according to The European Waste Catalogue (EWC): 030105; 170201; 170604.

Third party certifications
  • KEYMARK: Certificate: 011-7D011
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