Don't panic when faced with mould

Black dots?
Oh no!

One of its ‘favourite places’: expansion and connection joints made from silicone in sanitary spaces. You can usually recognise infestations by a dark, dot-like, slowly expanding stain on the surface.

Mould mycelium



Dangerous mould

In biological terms, mould belongs to the fungi family. There are around 250,000 species of them, around 50,000 of them belong to the subspecies of mould. It is one of the very natural ‘inhabitants’ of our planet – and it lives everywhere, even in the furthest reaches of the atmosphere. Individual spores of it in the air are not dangerous. But once it has taken hold, it is very difficult to get rid of it again.

Mould loves humidity

The bathroom as a
habitat for mould

Moulds are undemanding contemporaries. For food, they require only organic substances which they gain from wood-chip wallpaper, glue, wood, woollen or cotton fabrics or mattresses. And they love humidity. Air humidity of over 80% is what the micro-organisms love best. No problem in bathrooms, kitchens and even in heated or badly ventilated living spaces.

Mould also gains nourishment and protection from what is called the biofilm in bathrooms. This is a thin coating of a mucus-like consistency that is made up of bacteria and fungal spores of various species, as well as their food source, consisting of soap residues or very fine particles of skin or hair for example.