DS/EN 335 2013, USE CLASS 1-3

DS/EN 335 2013, USE CLASS 1-3

UTILITY CLASS 1

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

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

​This could be rafters, under floors, in skunks, cavities and other surfaces where people does not come into immediate contact with the treated surface.

Products approved for use class 1: ProtoxInsekt and ProtoxInsekt Konc.

UTILITY 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 service class, water condensation may occur on the surface of wood-based products Products.​

This can be any type of woodwork in a structure that is under a roof or sheltered from wind and weighing, where there is a risk of rewetting, e.g. due to thermal bridges, pipes, condensation at changing temperatures (roof structures). It is up to the user/craftsman to decide whether there is a risk of rewetting at the time of use of the product.

Products approved for use class 2: ProtoxKombiAqua, ProtoxSvamp and ProtoxAquafloor2.

UTILITY CLASS 3

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

Infestation by wood-damaging fungi and wood-destroying fungi is possible.​

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

There is a wide range of usage situations and when applicable, usage class 3 can be divided into two subclasses, usage class 3.1 and usage class 3.2.

Subclass 3.1​

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

Subclass 3.2​

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

Products approved for use class 3: ProtoxKombiAqua, ProtoxSvamp and ProtoxAquafloor2.​