Mildew/mould on inside wall at balcony door.

Found mould all around the doorway at the balcony door outta my bedroom. It was also where the ceiling meets the wall near enough the door right over my bed. I cleaned it all off but it has been there before.

Is it a moisture problem? There is a vent over the balcony door and it has a constant airflow coming through, cant seem to close it.

We also have a bathroom from the bedroom that a shower is always used in. Would this be the problem too?

Any help appreciated.

Bob the slob said:

We also have a bathroom from the bedroom that a shower is always used in. Would this be the problem too?

Any help appreciated.

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Do you have enough ventilation for the shower? If not an open window then a heavy duty extractor fan would probably be your best bet.