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 …