KC/QUAL/DOC/0025 - 06/ 01/15
Oriented Strand Board
Technical Data
OSB can be sawn, cut, milled and nailed. Any standard timber joints can be used for
OSB 2 Is designed for use where a high performance board is required which provides dimensional stability and load bearing capabilities for use in dry conditions.
MOST COMMON USES FOR OSB 2
Shelving and platform construction / Pallet manufacture Packaging Boarding up Signboards / Upholstered furniture frames Shopfitting / Bar and hotel fitting Exhibition stands / Film sets
OSB 3 Is designed for use where a high performance board is required which provides dimensional stability and load bearing capabilities especially suited for use in humid conditions.
MOST COMMON USES FOR OSB 3
Roofing 11mm, 15mm, 18mm / Sarking / Site hoardings / Timber Frame Buildings 8mm, 9mm and 11mm / Flooring 15 and 18mm
GENERAL PROPERTIES OF OSB
¹ These values are characterised in the material corresponding to a relative humidity of 65% and temperature of 20° C
² These values are characterised between and within boards
³ Perforator values are related to boards with moisture of 6,5%. In the case of boards with different moisture content the perforator value is recalculated.
KC/QUAL/DOC/0025 - 06/ 01/15
Oriented Strand Board
Technical Data
KRONOSPAN PROPERTIES FOR LOAD-BEARING BOARDS FOR USE IN DRY CONDITIONS (type OSB 2):
KRONOSPAN PROPERTIES FOR LOAD-BEARING BOARDS FOR USE IN HUMID CONDITIONS (type OSB 3):
GENERAL ADVICE
The boards should be stored in their intended installation area for a minimum of 48 hours to acclimatise to the surrounding temperature and humidity. Check for any damages before fitting.
Wetting of OSB should be avoided. OSB3 is not waterproof; the term ‘moisture resistant’ applies to the adhesive binder which will not break down in the presence of moisture (within BS EN 300 limits).
All common woodworking tools can be used successfully with Kronospan OSB. As a general rule, cutting speeds should be lower than for conventional wood. Carbide or diamond tipped blades and cutters are recommended because of their longer cutting life.
Boards with straight edges need 2-3 mm dilatation gap at the edges of the boards for possible moisture expansion.
Corrosion resistant fasteners should be used where OSB is part of a load bearing structure. Structural fastening systems are only permitted if their use has been approved by the manufacturer.
Guidance on the use of OSB in load-bearing applications is given in DD CEN/TS 12872.