BS EN 335:2013

This standard BS EN 335:2013 Durability of wood and wood-based products. Use classes: definitions, application to solid wood and wood-based products is classified in these ICS categories:

• 71.100.50 Wood-protecting chemicals
• 79.040 Wood, sawlogs and sawn timber

This European Standard is applicable to solid wood and wood-based products.

This European Standard defines five use classes that represent different service situations to which wood and wood-based products can be exposed. This standard also indicates the biological agents relevant to each situation.

A use class is not a performance class and does not give guidance for how long wood and wood-based product will last in service.