DS/EN 335 2013, USE CLASS 1-3

USAGE CLASS 1

Situations where the wood or wood-based product is inside a structure, not exposed to weather and moisture.​

The attack by fungi or wood-destroying fungi is insignificant and always unintentional.​

It could be rafters, under floors, in skunks, cavities and other surfaces where people do not come into immediate contact with the treated overburden.

The products approved for use class 1: ProtoxInsect and ProtoxInsect Conc.

USAGE CLASS 2

Situations where the wood-based product is under cover and not exposed to the weather (especially rain and driving rain), but where occasional, but not continuous, wetting may occur.​

In the utility class, condensation of water may occur on the surface of wood-based products.​​

This can be all types of woodwork in a construction that is under roofs or sheltered from wind and roads, with where there is a risk of rewetting, e.g. as a result of thermal bridges, pipes, condensation at changing temperatures (roof structures). It is the user/artisan who decides whether there is a risk of rewetting at the time of using the product.

The products approved for use class 2: ProtoxCombiAqua, ProtoxSvamp and ProtoxAqua ground2.

USE CLASS 3

Situations where the wood or wood-based product is above ground and exposed to the weather (especially rain). ​

Attacks by wood-deteriorating fungi and wood-destroying fungi are possible.​

The products may be used on all types of wood outdoors that are not in direct contact with the ground or water (lakes, streams, streams or the sea, see next slide).

There are a wide range of use situations, and when relevant, use class 3 can be divided into two subclasses, use class 3.1 and use class 3.2.

Subclass 3.1​

In this situation, the wood and wood-based product will not remain wet for long periods of time. Water will not accumulate.​

Subclass 3.2​

In this situation, wood or wood-based products will remain wet for long periods of time. Water can accumulate (e.g. standing water, puddles).

The products approved for use class 3: ProtoxCombiAqua, ProtoxSvamp and ProtoxAquaground 2.​