Environmentally-friendly insulation system
made from natural wood fibres

For more information please visit our website at www.steico.co.uk

•  provides an additional insulation layer above rafter level
•  water vapour open board for a healthy living environment
•  3 fold functionality: wind-proof layer, secondary water resisting layer, 

additional insulation layer

•  excellent summer heat protection
•  reduces thermal bridging through the rafters or studs
•  high security tongue & groove profile; suitable for roof inclinations greater 

than 18° without the need for tapes or glue. 

•  tongue & groove profile contributes to building airtightness
•  improved sound insulation  
•  good fire resistance – Class E according to EN13501-1
•  simple and economic on site handling
•  ecological, environmentally friendly and recyclable

AREAS OF APPLICATION

External insulation board

Water resistant roof sarking 

manufactured from natural 

wood fibres

For both new build and 

roofing renovation

External wall insulation for 

new build and renovation projects

Approved Quality

 

NEW 

EdgE-PROFILE

Produced and supervised in accordance with EN 13171
Board Designation 

WF – EN 13171 – T4 – DS(70,-)2 –  

 

CS(10\Y)100 – TR10 – WS1,0 – AF100

Edge Profile 

Tongue & groove all 4 edges

Fire class in accordance with EN 13501-1 

E

Declared Thermal Conductivity λD  [ W / ( m * K )] 

0.046

Declared  Thermal  Resistance   

1,30 (60)/ 1,70  (80)/ 2,15  (100) /

RD  [( m2 * K ) / W] 

 2,60 (120)

Board  Density  [kg / m3] 

ca. 240

Water vapour diffusion resistance factor μ 5
sd-Value  [m] 

0,3  (60) / 0,4  (80) / 0,5  (100)/ 0,6  (120)

Specific  Heat  Capacity  c  [J / (kg * K)] 

2100

Minimum compression strength 
10% deformation σ10  [N / mm2] 0.10
Minimum compression strength [ kPa ] 

100

Tensile strength perpendicular  
to Board level [kPa] 

≥ 10

Declared level of airflow resistance  
[( kPa * s ) / m2] 

≥ 100

Raw material 

Woodfibre, aluminium sulphate,  

 

paraffin, bond between layers

Waste  Code  (EAK) 

030105 / 170201

natural building products

Your STEICO Partner

www

.steico.co.uk

Operating site

 

certified according to

ISO 9001:2008

STEICOspecial TEChNICAL vALuES

Thickness [mm]

Board Coverage [mm]

Weight  [kg / m2]

Pieces per pallet

Pallet coverage [m2] 

Pallet weight [kg]

60

1885 * 575

14.01

36

38.2

ca. 620

80

1885 * 575

18.44

28

29.7

ca. 620

100

1885 * 575

22.81

22

23.3

ca. 620

120

1885 * 575

27.21

18

19.0

ca. 620

STORAgE ANd TRANSPORT 

Store STEICOspecial boards lying flat.

 

Store in a dry area.

Protect edges against damage.

 

Remove foil packing only when the 

board is ready to be installed.

STEICOspecial BOARd SPECIFICATIONS

Board Dimensions – 1880 mm * 600 mm. Tongue and groove profile to all 4 sides. Coverage per board is approximately 1.06 m2

MATERIAL

Wood fibre insulation produced 

to EN 13171.

STEICO uses wood from sustainably

managed forests, certified according to 

the strict guidelines of the FSC®

(Forest Stewardship Council).

STEICOspecial is particularly user 

friendly and will not knowingly cause 

skin irritation and can be worked with 

simple cutting tools. When cutting and 

handling STEICO products please ensure 

the correct personal protection 

equipment is used.

Printed on FSC

®

 certified paper | Date 03

 / 

2012. V

alid to subsequent revisions.

Member of

 

WWF

Global Forest & 

Trade Network