I knew someone who lived in a rented bottom floor flat in a converted house with mould like this. She scrubbed the walls more or less every day, tried every product under the sun, had dehumidifiers running when she could afford the extra power draw… but the mould bloomed through the paint again so quickly it made essentially no difference to the air quality, and little to the stains that developed. The landlord would paint over it every once in a while and acted as if they were doing her a huge favour by doing so.
Oddly enough, once she could afford to move out her unexplained health issues improved immensely…
Sorry that became a very big rant.
TL;DR cleaning the mould religiously doesn’t necessarily stop it from looking like that after a while
I knew someone who lived in a rented bottom floor flat in a converted house with mould like this. She scrubbed the walls more or less every day, tried every product under the sun, had dehumidifiers running when she could afford the extra power draw… but the mould bloomed through the paint again so quickly it made essentially no difference to the air quality, and little to the stains that developed. The landlord would paint over it every once in a while and acted as if they were doing her a huge favour by doing so.
Oddly enough, once she could afford to move out her unexplained health issues improved immensely…
Sorry that became a very big rant.
TL;DR cleaning the mould religiously doesn’t necessarily stop it from looking like that after a while