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SWISS KRONO LONGBOARD OSB
Always in the Lead
CE - made with formaldehyde-free binders

SWISS KRONO OSB/3 is also available in long versions with lengths from 6.501 to 18 metres – the ideal wood-based materials for large applications. Sporting a ContiFinish® finish, these stable boards for load-bearing applications are also suitable for use in high-moisture zones.

A Harmonised System

On the Services page, you can download a large number of system modules for building new houses and modernising and renovating existing ones with SWISS KRONO products. Click here to go straight to the download section

Storey-High Long Boards

SWISS KRONO has a long tradition of developing innovative new products. One such innovation is the production of SWISS KRONO OSB/3 boards with a length of 18 metres. In fact, the SWISS KRONO GROUP is probably the only company in the world able to produce 18-metre-long boards, having invested in a long-board stacking system at its Heiligengrabe, Germany plant.

Builders of prefabricated houses and commercial structures can take advantage of this SWISS KRONO OSB innovation to create large-size wall and roof elements. It also offers producers of prefabricated elements for timber-frame houses new opportunities to increase efficiency and economise. Plus, the latest storey-high long boards from the SWISS KRONO OSB product family, with a height of 2.8 metres, make it possible for a single board to extend the entire length of a building, completely eliminating butt joints. This does away with the need to lay plasterboard over it.

Anwendungsbereiche

Applications

  • Commercial buildings and prefabricated houses



Strand direction
Major axis Minor axis
Thickness range [mm] d 6
to
10
>10
to
18
>18
to
25
6
to
10
>10
to
18
>18
to
25
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
Tensile force modulus of elasticity Eta 3800 3000
Compression modulus of elasticity 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)
Tolerance in length and width ± 3 mm
Perpendicularity acc. to EN 324‐2 2 mm/m
Thermal conductivity acc. to EN 13986 λ 0.13 W/mK
Water vapour permeability value μ 200 (moist) / 300 (dry)
Waste code 03 01 05
Thickness swelling acc. to EN 317 ≤ 15%
Coefficient of expansion for 1% change in wood moisture content 0.03%
Emissions class E1 – 100% formaldehyde-free binders
(< 0.03 ppm)
Environmental Product Declaration as per ISO 14025 an EN 15084 EPD-KRO-20150067-IBD2-EN
Service classes acc. to EN 1995-1-1 1 + 2
Reaction to fire acc. to EN 13501-1 D-s2, d0
Declaration of Performance No. acc. to CPR KDE_OSB-3_CPR_2016_039
Format [mm] Thickness [mm]

9 10 12 15 18 22 25 30 40
6501 mm to 18000 mm



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*
*
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* Minimum Order Quantity 1 truckload per thickness and format

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.



Coating and Varnishing



  • SWISS KRONO OSB with a ContiFinish® surface may be coated with a solvent-containing 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.

Important Note on Coating and Painting!
When coating SWISS KRONO OSB with oil or hard wax oil, under some circumstances ingredients in the oil may interact with the natural wood resin in the SWISS KRONO OSB. This can result in an intense, lasting odour in the room. We therefore recommend that you contact the manufacturer of the oil or hard wax oil before using it.



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 against the labels or producer’s documentation on-site to make sure that the following are correct: thickness, approved utilisation class, surface (sanded or ContiFinish®) and edge type (square-edged or tongue-and-groove).
  • During installation, boards may be briefly leaned against a solid structure at a 70° angle.
  • Always carry individual boards in an upright (vertical) position.



Storage



  • Protect boards from exposure to significant moisture or very high relative humidity.
  • Prevent 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 and wooden supports (spaced no more than 600 mm 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 15 mm).



Acclimatisation



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



Sawing, Milling, Sanding and Drilling



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



Nailing, Stapling, Screwing and Gluing



  • SWISS KRONO OSB can be attached to wooden studs and rafters using screws, nails or staples.
  • Use in accordance with the official approvals and standards (Z-9.1-618, Z-9.1-503 and DIN 1052 in Germany as well as EN 1995-1-1 (EC 5)).
  • Additionally bond or glue tongue-and-groove joints.

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