Water damage in bathroom ceiling floor: how to treat and then prevent

ceilingwater-damage

Water on the floor next to the bathtub in the upstairs bathroom (tile floor and tile baseboard) was allowed to sit for a half hour, then I heard drip-drip-drip in the bathroom directly below it. We rushed to clean it up, but I was disheartened to see this:

ceiling damage

  1. What should I do now? I turned off my house humidifier and cranked the heat. What else?
  2. Should I fix it? How? Or should I leave it, figuring it is going to happen again?
  3. How do I prevent water on the floor from seeping through so quickly?

Best Answer

Bathroom floors are not supposed to leak. You may want to pay to have the floor redone properly. I assume this is a new house that you are just discovering this.

The photo looks like plastered drywall. Normally wet drywall has to be replaced, otherwise it will grow mold which is bad. Theoretically it can be dryed out, but that would not be an easy operation and practically requires removing the drywall to get full access to it, so if you remove it you may as well replace it.