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Pitch Roof Membrane for Sale Ireland
Pitched Roofing Underlay Supply Ireland

STEICO internal


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STEICO internal natural wood fibre boards 

  • Environmentally friendly internal insulation made from natural softwood
  • Ideal for renovation of masonry and traditional timber constructions
  • Excellent control of condensation – advanced performance using intelligent building physics
  • Can be utilised without an additional vapour barrier
  • Water vapour open for a healthy internal climate
  • Ecological and recyclable with no impact on the environment.
Edge profile Thickness [mm] Size [mm] Weight [kg/m²] Pieces/ pallet m²/pallet Weight/pallet [kg]
square edged 20 1,350 * 600 3,20 116 94,0 approx. 300
tongue and groove 40 1,200 * 380 6,40 84 36,5 approx. 260
tongue and groove 60 1,200 * 380 9,60 54 23,4 approx. 250
square edged 40 1,200 * 380 6,40 84 38,3 approx. 260
square edged 60 1,200 * 380 9,60 57 26,0 approx. 250
square edged 80 1,200 * 380 12,80 42 19,2 approx. 270



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