scope:

This European Standard defines wood-based panels for use in construction and specifies relevant characteristics and appropriate test methods to determine those characteristics for wood-based panels, whether unfaced, overlaid, veneered or coated: a) for internal use as structural components in dry conditions1); b) for internal (or protected external) use as structural components in humid conditions2); c) for external use as structural components3); d) for internal use as non-structural components in dry conditions1); e) for internal (or protected external) uses as non-structural components in humid conditions2); f) for external use as non-structural components3); g) for use as structural floor decking on joists in dry1) or humid2) or external3) conditions; h) for use as structural roof decking on joists in dry1) or humid2) or external3) conditions; i) for use as structural wall sheathing on studs in dry1) or humid2) or external3) conditions. This European Standard covers wood-based panels in the form of solid wood panels, LVL4), plywood, OSB, particleboards (chipboards, flaxboards) either resin- or cement-bonded, wet process fibreboards (hardboards, medium boards, softboards) and dry process fibreboards (MDF) for use in construction. This European Standard includes provisions for evaluation of conformity and marking of wood-based panels. The wood-based panels may be treated during production with chemical agents to improve their reaction to fire performance and/or their resistance to biological attack, e.g. by fungi and insects. However, the processes of such treatments are outside the scope of this European standard. This European Standard is not intended to be applicable to wood-based panels for use in non-constructional applications.