Usage of wind barrier board

Wind barrier boards are used as a wind blocking, insulating and stiffening elements in constructions of exterior walls, ceilings and roofs.

Advantages

  • Protects construction from weather conditions
  • Natural and breathable material
  • 100% natural wood fibre
  • Supports insulation materials like loose and blown wool
  • Additional thermal insulation
  • Sound insulation
  • Stable shape and dimensions

Wind barrier board 25 mm

  • Increases constructional rigidity
  • Possible to plaster

Wind barrier board 25 mm with joints

  • Avoid thermal bridges without taping
  • For using on the roofs with angle over 20˚ (boards with tongue and groove joints)
  • Possible to plaster

Wind barrier board technical data

12 mm board

25 mm board

25 mm mm board
half lap joints

25 mm board
Tongue and Groove joints

Thickness

mm

12 (-1/+1,2)

25 ( -1/+1,8)

25 ( -1/+1,8)

25 ( -1/+1,8)

Boards on pallet

pcs

95

45

45

45

Amount on pallet

m2

307,8

145,8

86,4

101,25

Width

mm

1200 +- 2

1200 +- 2

800 +- 2

1200 +- 2

Length

mm

2700 +- 5

2700 +- 5

2400 +- 5

1875 +- 5

Density

kg/m3

≥240

≥240

≥240

≥240

Thermal conductivity λD

W/mK

≤ 0,049

≤ 0,049

≤ 0,049

≤ 0,049

Reaction to fire

Class

E

E

E

E

Bending strength

N/mm2

≥1,2

≥0,8

≥0,8

≥0,8

Swelling in thickness

%

≤ 6

≤ 6

≤ 6

≤ 6

Air permeability, Δp 100 Pa

m3 / m2 sPa

≤ 10 x 10-6

≤ 10 x 10-6

≤ 10 x 10-6

≤ 10 x 10-6

Vapour permeability

kg / m2 sPa

≥ 1,5 x 10 -9

≥ 1 x 10 -9

≥ 1 x 10 -9

≥ 1 x 10 -9

Installation of wind barrier boards

Wind barrier boards are attached to construction in direction of frame. Distance between frame beams (measured from the centre-to-centre of the beam) must be 600 mm.

Wind barrier boards must be installed in a way that there are 2–3 mm gaps left between the boards. To ensure the weather ability of these connections that are not on the frame, a wooden joist must be set under the connection site and the ends of the boards are attached to this joist. You can also use elastic construction tape to tighten the 25 mm boards.
The boards are attached with either nails or staples.
A longitudinal streak in a centre of a board simplifies the nailing of the board.

Installation of 12 mm wind barrier boards
Use hot-dip galvanized nails with large nail heads (length: 40 mm or longer) or staples (length: 32 mm). The distance between nails/staples and the edge of the board must be at least 10 mm. The distance between these nails/staples that are attached to the edge of the board must be 100 mm; the distance between these nails/staples that are attached to the centre of the board must be 200 mm.

Installation of 25 mm wind barrier boards
Use hot-dip galvanized nails, we recommend nails with large nail heads (length: 70 mm or longer) or staples (length: 58 mm or longer). The distance between nails/staples and the edge of the board must be at least 10 mm. The distance between these nails/staples that are attached to the edge of the board must be 100–150 mm; the distance between these nails/staples that are attached to the centre of the board must be 300 mm.

Installation of 25 mm wind barrier boars with half lap joint
Unlike the usual wind barrier boards, the wind barrier boards with half lap joints are attached horizontally (perpendicularly to frame). This eliminates the possibility that the connections of the boards do not overlap with the frame (no need to install additional joists, no need to use construction tape etc). This prevents the cold bridges from forming (if possible, install the boards so that they are slightly shifted).
Use hot-dip galvanized nails to attach the boards, we recommend nails with large nail heads (length: 70 mm or longer) or staples (length: 58 mm or longer). In order to prevent damages to half lap joints, the distance between nails/staples and the edge of the board must be at least 35 mm. The distance between these nails/staples that are attached to the edge of the board must be 100–150 mm; the distance between these nails/staples that are attached to the centre of the board must be up to 200 mm.

* Wind barrier boards must be covered with cladding no later than one month after installing them. In order to guarantee the conversion of humidity, a 20–50 mm air gap must be left between the board and the cladding. The battens of the cladding must be vertical or constructed in a way that guarantees the vertical movement of the air between the cladding and the wind barrier board.