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OSB BOARDS

Characteristics and use

OSB board is a three layered board made of oriented wood strands. The boards may be used for load-bearing purposes in dry and wet environment. Use: load-bearing and decorative elements of wood structures – walls, ceilings, floorings, facing of buildings, roof boarding, crating, scaffolding structures, palettes, packages, transport containers, garden constructions and the like.

OSB 2 – constructional board for use in a dry environment
OSB 3 – constructional board for use in a wet environment
OSB 4 - Load-bearing board for use in humid conditions

 

Technical parameters

OSB 2 / OSB3 – Flat edges

Format: 2500 x 1250 mm
Thickness: 9/10/11/12/15/18/22/25 mm

 

OSB 2 / OSB 3 – tongue/groove four-sided:

Format: 2500 x 625 mm
Thicknesses: 12/15/18/22/25 mm

 

Finish: sanded and unsanded

 

Property Testing method Requirement
Tolerance for thickness STN EN 324-1 ± 0,8 mm
Tolerance for dimensions STN EN 324-1 ± 3,0 mm
Tolerance of  side straight STN EN 324-2 ± 1,5 mm / m
Tolerance for rectangularity STN EN 324-2 ± 2 mm / m
Moisture OSB2 STN EN 322 2 % – 12 %
Moisture OSB3 STN EN 322 5 % – 12 %
Formaldehyde emissions STN EN 120 < 8 mg / 100 g a.s. samples
Thickness range   >6 >10 >18 >25 <10 <18 <25 >32
Bending strength OSB2/OSB3 hor. STN EN 310 (MPa) 22 20 18 16
Bending strength OSB2/OSB3 ver. STN EN 310 (MPa) 11 10 9 8
Swelling after 24 hours OSB 2 STN EN 317 20% 20% 20% 20%
Swelling after 24 hours OSB 3 STN EN 322 15% 15% 15% 15%
Tensile strength OSB2/OSB3 STN EN 319 (MPa) 0,34 0,32 0,30 0,29
Modulus of elasticity OSB2/OSB3 hor. STN EN 310 (MPa) 3500 3500 3500 3500
Modulus of elasticity OSB2/OSB3 ver. STN EN 310 (MPa) 1400 1400 1400 1400

 

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