scope:

This part of the standard is concerned with defining the penetration and retention classes for preservative-treated wood. It allows a specifier or user to choose a treatment for a solid wood commodity taking into account its intended service or the needs of different regional or traditional practices throughout Europe and the biological hazard class conditions to which the commodity will be exposed (see EN 335-1). This part of the standard establishes a classification of preservative-treated wood in terms of penetration and retention of preservative. This part includes procedures for attestation of conformity by factory production control, and third-party inspection and assessment. This part is applicable to preservative-treated solid wood, including glued laminated members, suitable for use in those service conditions defined by the hazard classes in EN 335-1. This part is applicable to the protection of wood against attack by wood-destroying fungi, insects and marine organisms. It does not consider those other properties of treated wood, for example odour, corrosivity and compatibility with other materials. Nor does it consider any properties from the health, safety and environmental point of view. It does not apply to wood to be treated with formulations for remedial (curative) purposes, or the prevention of attack by sapstain fungi, or insects in green timber.