Masonry Layout

Composition & manufacturing process Flax shives from the stalk of the flax plant comprise the bulk of flaxboard and are prepared in a mechanical chipper and can also contain other raw materials such as particles of wood (wood, flakes, chips, shavings, saw dust and similar materials). These chips are compressed and are generally bound together with synthetic resin systems such …

Composition & manufacturing Following storage for at least 3 months, the debarked softwood logs of selected species are reduced to flakes some 10 to 30 mm in length and 0.2 to 0.3 mm in thickness using drumknife flaking machines. After passing through a hammermill, the flakes are separated into surface and core material by screening, and are then mixed with …

Density Hardboards > 900kg/m3Mediumboards* > 400kg/m3 to <900kg/m3Softboards > 230kg/m3 to <400kg/m3*Mediumboards (which should not be confused with Medium Density Fibreboard – MDF) can be sub-divided into:Low density mediumboards 400kg/m3 to <560kg/m3High density mediumboards 560kg/m3 to <900kg/m3 Composition & Manufacturing process Wet process fibreboards can be made using either softwood or temperate hardwood species (or both) (some low density mediumboards are made from recycled …

Composition MDF can be manufactured with either softwood or hardwood species. The majority of MDF manufactured is composed mainly of softwood although some individual brands may contain a higher percentage of temperate hardwood depending on the location of the factory to the local forest resource.The constituents of a typical standard MDF manufactured in the United Kingdom or Ireland are 82% …

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.