I dropped something heavy and mildly pointed onto the bathroom floor.
The Bathroom is tiled with ~30cm square black "slate like" tiles, but where I dropped this thing, the surface has been badly (2-3 cm radius, ?1-2mm deep?) chipped, and underneath the tile is pale brown.
Since I chipped it, there has been moisture welling up, through the chip. Initially I assumed it was just from the object dropped (it was wet), but the chip is still wet, and if I pat it thoroughly dry with toilet roll, then it 'spontaneously' becomes wet enough to mark a mark on toilet roll again, in <10 seconds.
The rest of the chipped tile, the other tiles, and the grout between the tiles all seem fine; no darkness, claminess, or any other sign of dampness.
What have I done, and what do I need to do now?
I know nothing about the tiles in question and don't (to my knowledge) have any spares.
Best Answer
Get a dehumidifier running in there and see if you can dry it out, you’ll have to stop using the bathroom (if you can) and it might take a while (possibly days) Once it’s completely dry try using one fixture at a time and see if you can isolate the cause. The other posts have given you some good advice and you might end up paying someone to rip up that tile etc, but if you’re desperate to avoid doing that you might be able to avoid it and the dehumidifier will help prevent/slow down any mould growth that might be happening anyway.