best wood WALL 140 Plaster base board for exterior use

WALL 140 is a pressure-resistant, plasterable wood fibre insulation board for installation on full-surface substrates such as solid wood and masonry in exterior wall areas.


  • Excellent thermal conductivity value
  • Good heat protection in summer and optimal thermal insulation in winter
  • Improves sound insulation: wood-fibre insulation boards are very good sound insulators, the higher the raw density the better the sound-insulating effect
  • Hydrophobic throughout
  • Open to diffusion and therefore moisture-regulating
  • Easy installation - secured by our processing guidelines ETICS
  • Hardly any waste due to the fact that the wood fibre insulation boards can be used on both sides
  • Completely recyclable


best wood WALL 140
  • 0.040 [W/mK]

    Nominal value of thermal conductivity λD according to DIN EN 13171

  • 0.040 [W/mK]

    Declared thermal conductivity λD according to SIA 279 (Switzerland)

  • 0.042 [W/mK]

    Rated value of thermal conductivity λB according to DIN 4108-4

  • 140 [kg/m³]


Fields of application

  • Exterior masonry and solid wood walls
  • Can be plastered directly

Fields of application according to DIN 4108-10
DEO-ds, WAB-ds, WAP-zh, WZ, WH, WI-zg, WTR

Delivery formats

  • Design

    • Tongue and groove
    • Square edge
Format (mm)
580 x 1500 580 x 2000 600 x 1250
Thickness (mm)

Technical data

Denomination of insulation boardWF-EN 13171-T5-DS(70,-)2-CS(10\Y)100-TR20-WS1,0-MU3-AFr75
ETA-16/0997; ETA-15/0731; aBG Z-33.84-1674; aBG Z-33.84-1675
Density140 [kg/m³]
Nominal value of thermal conductivity λD0.040 [W/(mK)]
Rated value of thermal conductivity λB0.042 [W/(mK)]
Reaction to fire according to DIN EN 13501-1 E
Construction material class according to DIN 4102-1 B2
Full declarationWood fibers, PMDI gluing, paraffin
Production processDry process
Compressive stress at 10% compression≥ 100 [kPa]
Tensile strength perpendicular to the plane of the board≥ 20 [kPa]
Modulus of elasticity E(d)≥ 1,45 [N/mm2]
Water vapor diffusion resistance μ3
Linear flow resistance> 75 [kPa·s/m²]
Short time water absorption < 1.0 [kg/m²]
Specific heat capacity2100 [J/(kgK)]
Waste code according to AVV030105, 170201


For your and our safety, we take great care to ensure a high standard of quality.


Here you will find popular accessories for this product.

best wood adhesive and reinforcing mortar (UP)

best wood adhesive and reinforcing mortar (UP)

Adhesive and reinforcing mortar with organic lightweight aggregates for fixing wood fiber insulation boards to mineral substrates.

best wood mineral plaster (MOP)

best wood mineral plaster (MOP)

Mineral plaster white - breathable, water-repellent and moisture-regulating finishing plaster with brilliant surface structure.

best wood Ejotherm STR H insulating plaster screw

best wood Ejotherm STR H insulating plaster screw

Screw for insulation boards with a diameter of 6 mm for flush fastening on wooden substrates. Plate Ø 60 mm. Effective screw-in depth: min. 35 mm.

best wood FDM WALL

best wood FDM WALL

Assembly adhesive to fasten reveal boards and seal joints in the wall insulation, when the joint width is about 2–5 mm.

Suitable accessories

Here you will find everything that is right and good for working and processing our insulation products.

Reference Mali sports hall Biberach Ecological, functional, aesthetic

A gem of a municipal building: a total of around 1070 m³ of wood and 1,114 m² of best wood WALL wood fibre insulation were installed here in a very short time, packaged in a great design and combining different areas of use.

  • Location 88400 Biberach an der Riss, Germany
  • Building type Event buildings, Sports buildings, Municipal / public construction
  • Building measure New buildings