Bathroom mould

[scherzo]

If you're short on cash then caulking to prevent more moisture is the best bet.

Unfortunately black mould isn't very good.. hopefully it will dry out but it likely won't in a bathroom.

Last time we had black mould in a bathroom the shower stall caved in.. then we had to replace all of the drywall (30 year old house.. no green board or concrete backer board) and some of the studs.

The other thing that happens sometimes is that the black mould could be feeding from a leak that is somewhere else.

Keep the room as dry as possible. Run the fan (if you have one) most of the time to keep it dry. Open a window whenever you take a bath or a shower to help get the moisture out of there.

Good luck!