Composition and manufacturing process The timbers used in OSB manufacture include both softwoods (spruce, pine) and hardwood (aspen). Wood strands are cut tangentially from debarked logs which are held longitudinally against rotating knives. The ribbon of flakes produced is usually about 75mm wide and this breaks up on handling to produce individual flakes which are 75mm along the grain and …

Particleboard (‘Chipboard’) Composition Wood chips comprise the bulk of particleboard and are prepared in a mechanical chipper generally from coniferous softwoods principally spruce, though pine and fir and hardwoods, such as birch, are sometimes used. Particleboards may also incorporate a large proportion from recycled sources (up to 95% plus but generally around 40%). These chips are generally bound together with …

SWP/1 :Solid wood panel for use in dry conditionsSWP/2 :Solid wood panel for use in humid conditionsSWP/3 :Solid wood panel for use in exterior conditions

LVL/1 :LVL for use in dry conditionsLVL/2 :LVL for use in humid conditionsLVL/3 :LVL for use in exterior conditions

P1: general purpose boards for use in dry conditions.P2: boards for interior fitments (including furniture) for use in dry conditions.P3: non load-bearing boards for use in humid conditionsP4: load-bearing boards for use in dry conditions.P5: load-bearing boards for use in humid conditions.P6: heavy duty load-bearing boards for use in dry conditions.P7: heavy duty load-bearing boards for use in humid conditions.

EN 634-1 Cement-bonded particleboards – Specifications-Part 1: General requirements.EN 634-2 Cement-bonded particleboards – Specifications-Part 2: Requirements for OPC bonded particleboards for use in dry, humid and exterior conditions. MOE classes 1 & 2.

Wet Process Fibreboards Softboard (EN 622-4)General purpose (for use in dry conditions) SBGeneral purpose (for use in humid conditions) SB.HGeneral purpose (for use in exterior conditions) SB.E EN 622-4Load bearing (for use in dry conditions) SB.LSLoad bearing (for use in humid conditions) SB.HLSaLow density mediumboard (EN 622-3)General purpose (for use in dry conditions) MBLGeneral purpose (for use in humid conditions) …

Dry Process Fibreboards (MDF) (EN 622-5) MDF General Purpose – DryMDF.H General Purpose – HumidMDF.LA Load Bearing – DryMDF. HLS Load bearing – HumidL-MDF General Purpose – Light MDF – DryL-MDF.H General Purpose – Light MDF – HumidUL1-MDF General Purpose – Ultra Light MDF – DryUL2-MDF General Purpose – Ultra Light MDF – DryMDF.RWH MDF used in rigid underlaysNote:- Exterior …

EN 636-1 – Plywood for use in dry conditionsEN 636-2 – Plywood for use in humid conditionsEN 636-3 – Plywood for use in exterior conditions

OSB (EN 300) OSB/1- General purpose boards, and boards for interior fitments (including furniture) for use in dry conditions.OSB/2 – Load-bearing boards for use in dry conditions.OSB/3 – Load-bearing boards for use in humid conditionsOSB/4 – Heavy-duty load-bearing boards for use in humid conditions.