Table 1.

The Dutch classification system for fungal resistance of interior finishes.

Class	Quality	Recommended application
I	Resistant	Indoor environments with transient moisture loads such as bathrooms, kitchens, production processes, swimming pools
II	Fairly resistant	All other indoor areas, with a more or less steady-state indoor humidity, such as living rooms, attics, storage rooms, or depots
III	Sensitive	Only on inner constructions not being part of the building envelope in environments other than class I

Adapted from Adan et al. (1999).