>>2886150
mold cannot grow where there isn’t a steady supply of moisture, because of this I would make solving ventilation my priority
>the fan is busted everyone tells you to buy a new one
You may not need a new fan, fans are simple machines, if they’re spinning they’re working. The problem is likely a buildup of dust/gunk/rust in the fan housing or along the ductwork. Clean the fan cover and blades, take the cover off if you can. Inspect the ductwork as much as possible to check for leaks/holes. You can also turn the fan on and try to find the vent on the outside of the bldg to check for airflow.
once a semi-permeable material has had mold growing on it… it really should be thrown away and replaced.
>if you can’t do that
You’re gonna need a mold killer like bleach, soak the walls/ceiling with it. Don’t worry about the moisture in the cleaner since we’re killing the mold rn. Once it’s dry, scrub the walls hard, hard enough to remove as much as you can. A mask is strongly suggested.
>repairs
In the states there’s a brand called “killz”, but basically you want a heavy duty, oil based, “stain sealing”, primer. You spray this on as many coats as you need to completely cover the area. After this you can paint another coat of whatever you choose or leave as-is. Up to you. If you really want a hack repair you can just use this stuff and spray it over the spots now.

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Moldy af bathroom ceiling, what do