SWISS KRONO OSB/3, N + F - ContiFinish®, CE - For faster and simpler installation glued without formaldehyde


The attractive, mixed wood solution for jointless installation

The CE-certified wood materials by SWISS KRONO Kft. are manufactured sustainably according to EN 13986 and EN 300. Like the SWISS KRONO OSB/3, the OSB/3 N + F is made of mixed wood and is a cost-efficient product for load-bearing and stiffening purposes. It guarantees easy, jointless installation due to its 4-sided tongue-and-groove connection. With the ContiFinish® surface, it is also designed for damp areas as well. Despite its lightweight build, the SWISS KRONO OSB/3 N + F remains dimensionally stable and catches the eye with its outstanding strength.

OSB/3 N + F board with ContiFinish® surface

Made of poplar and spruce, the board is designed for normal stress and guarantees easy processing thanks to its 4-sided tongue-and-groove connection. It is equally perfect for DIY enthusiasts and can be processed using any standard woodworking equipment like hand-held circular saws. SWISS KRONO OSB/3 N + F is a great choice for many applications due to its remarkable strength.

Areas of application

Whether it is ceiling panelling, roof boarding, wall panelling, floors or flat roof construction – the OSB/3 N + F is suitable for a broad range of uses. Besides its use in timber construction, this mixed wood board is a convincing choice with its extraordinary versatility for many other applications like furniture making or in the packaging industry. Additional sealing with a vapour barrier is not necessary if SWISS KRONO OSB is used as a diffusion suppressor for the interior panelling of outside walls!

  • Panelling for outside areas not exposed to the elements
  • Ceiling panelling
  • Roof boarding (to replace battens)
  • Stiffening for the roof panel
  • Interior fit-out
  • Wall panelling
  • Floors
  • Floor refurbishments
  • Dry flooring/dry screed
  • Shelf construction
  • Furniture
  • Decorative uses
  • Packaging, also for export to China, Australia and elsewhere

Various installation plans

  1. Wood or PU glue
  2. Vapour barrier
  3. 10 mm gap to the wall
  4. Installed with at least 400 mm offset

Strand direction

Major axis Minor axis
Nominal thicknesses of boards [mm] d 6
Strength values [N/mm²]
Stresses on board

Bending fm,k 18.0 16.4 14.8 9.0 8.2 7.4
Compression fc,90,k 10.0 10.0
Shear fv,k 1.0 1.0
Plate loading
Bending fm,k 9.9 9.4 9.0 7.2 7.0 6.8
Tensile force ft,k 9.9 9.4 9.0 7.2 7.0 6.8
Compression fc,k 15.9 15.4 14.8 12.9 12.7 12.4
Shear fv,k 6.8 6.8
Stiffness values [N/mm²]

Stresses on board
Bending modulus of elasticity Ema 4930 1980
Shear modulus Gra 50 50
Plate loading

Bending modulus of elasticityl Eca 3800 3000
Shear modulus Gva 1080 1080
a The characteristic stiffness values E05 and G05 are calculated as follows: E05 = 0.85 x E and G05 = 0.85 x G
General and building physics values
Bulk density acc. to EN 323 m ≥ 600 kg/m3
Max. deviations in board thickness ± 0.8 mm (ContiFinish®) | ± 0.3 mm (sanded)
Internal bond acc. to EN 319 perm σZy 0.34
0.32 0.30 0.34 0.32 0.30
Thermal conductivity acc. to EN 13986 λ 0.13 W/mK
Thickness swelling acc. to EN 317 ≤ 15%
Waste code EWC 03 01 05
Service classes acc. to EN V 1995-1-1 1 + 2
Reaction to fire acc. to EN 13501-1 D - s2, d0
Declaration of Performation no. acc. to CPR SKHU_OSB/3_CPR_003

Note: The characteristic values are for structural calculations acc. to EN 1995-1-1 and EN 1995-1-2 (EC5).

SWISS KRONO OSB/3, N + F - ContiFinish®

Format [mm] Thickness [mm]

6 8 9 10 11 12 15 18 19 20 22 25 30 40

Pieces per pallet
2500 x 675



2500 x 625



Special formats and thicknesses on request

Laying and Boarding

  • When laid closely with butt joints in interior walls, leave room for expansion where the boards adjoin other structures.

Laying and Boarding

  • When laid closely with butt joints in interior walls, leave room for expansion where the boards adjoin other structures.

Coating and Varnishing

  • SWISS KRONO OSB/3 with a ContiFinish® surface may be coated with a solvent-based PU (DD) or synthetic-resin varnish.
  • Sanded surfaces may be coated like normal wood (e.g. with varnishes, paints, oils, waxes and glazes).
  • It is advisable to apply at least three coats, sanding after the first one.
  • Application of at least three coats is recommended.
  • The only way to achieve an absolutely smooth surface is to apply filler.

Transport and Handling

  • Take steps to prevent the boards, and especially the unprotected edges, from absorbing large amounts of moisture during transport and installation.
  • Be careful not to damage the edges when lifting, moving and stacking boards (this applies especially to tongue-and- groove boards).
  • Check the labels or manufacturer’s documentation on-site to make sure that the following are correct: thickness, approved utilisation class, surface (sanded or unsanded) and edge type.
  • During installation, boards may be briefly leaned against a solid structure at a 70° angle.
  • Always carry individual boards in an upright (vertical) position.


  • Protect boards from exposure to significant moisture or very high relative humidity.
  • Avoid direct contact of the boards with the floor.
  • Only store outdoors temporarily, and if unavoidable cover stacks with watertight but water-vapour-permeable tarpaulins.
  • Always stack boards horizontally on pallets or wooden supports (spaced no more than 600mm apart).
  • Align wooden supports precisely with one another and parallel to the shorter side of the boards.
  • Lay the boards so their edges line up (with a maximum overhang of 15mm).


  • Precondition boards prior to installation.
  • Store boards for about three days under the same climatic conditions as at the installation site.
  • This adjustment to the ambient moisture at the installation site will prevent excessive shrinkage or swelling.

Sawing, Milling and Drilling

  • SWISS KRONO OSB/3 can be sanded, sawn and drilled just like solid wood and using all of the same tools.

Nailing, Stapling, Screwing and Gluing

  • SWISS KRONO OSB/3 can be attached to wooden studs and rafters using screws, nails or staples.
  • Use in accordance with DIN EN 1995-1-1 (EC 5).
  • Additionally bond or glue tongue-and-groove joints.

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