Durability of wood and wood-based products - Efficacy of preventive wood preservatives as determined by biological tests - Part 1: Specification according to use class

This document outlines a specialized methodology for evaluating the efficacy of preservatives used to protect wood and wood-based products against biological degradation. The scope covers the determination of effectiveness specifically tailored to distinct usage categories, ensuring that materials are matched with appropriate protective treatments based on their intended environment. By establishing rigorous test procedures, the standard provides a framework for assessing how well preventive preservatives perform under defined service conditions. This approach aids in classifying wood products according to their durability potential in various applications, ranging from indoor environments to those exposed to high moisture or insect attack. The methodology emphasizes consistency and reliability in testing outcomes, allowing manufacturers and regulators to verify that protective measures meet the necessary performance benchmarks for specific use classes. It serves as a technical reference for conducting controlled experiments that measure the resistance of treated timber, thereby supporting quality assurance in the construction and manufacturing sectors without requiring direct reference to the issuing body or exact release date.