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SWISS KRONO OSB/3 sensitive EN 300, square-edge - ContiFinish® -
the low-emission wood material,
glued without formaldehyde, CE, FSC

OSB/3 sensitive is ideally suited for particularly delicate applications in wood frame and engineering construction, industrial and residential construction, for load-bearing ceiling planking, bracing wall planking, as well as for floors, roofing, furniture, shelving and door construction, and even for the packaging industry.

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

SWISS KRONO OSB/3 sensitive is made from 100 % poplar wood and a small amount of formaldehyde-free binder: What makes poplar wood so special is that it contains almost no resins and therefore has very low VOC (volatile organic compound) values. The otherwise typical smell of wood can be perceived by sensitive persons as annoying or unpleasant. Thanks to the optimised properties of SWISS KRONO OSB/3 sensitive, this wood material is particularly suitable for applications where high demands are placed on air quality.




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/td> m ≥ 600 kg/m³
Thermal conductivity acc. to EN 13986 λ 0.13 W/mK
Water vapour permeability value sd ≥ 2.0m (from 12 to 25mm) ‐ dry
Waste code EAK-Code 03 01 05
Emissions class E1 – 100% formaldehyde-free binders
(< 0.03 ppm)
TVOC emission acc. to AgBB-Scheme (after 28 days) μg/m3 202
VOC‐emission / DIBt‐Certificate: G‐160‐18‐0001: Compliance with the Health Protection Requirements for Building Structures in acc. with Annex 8 of the German Model Administrative Regulation on Technical Construction Requirements (MVVTB 2017/1)
Used wood species Poplar
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 SKHU_OSB/3_SENSITIV_CPR_001
Format [mm]
Thickness [mm]

15
22
25
2800 x 1250
60


3000 x 1250
60
42

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.

Downloadable documents

Category:
Art. No. Title
P00450 SWISS KRONO Delivery programme Flyer - English
P00086 SWISS KRONO OSB Environmental product declaration (EPD) - English
P00241 SWISS KRONO OSB Full-line catalogue Brochure - English
P00595 SWISS KRONO OSB Material Safety Data Sheet - English
P00946 SWISS KRONO Product Tolerances - English
Product documents
Art. No. Title
P01458 SWISS KRONO OSB/3 sensitiv - Certificate of Compliance - English
P01432 SWISS KRONO OSB/3 sensitive data sheet - English
P01459 Sintef OSB/3 Certificate - English
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