Ceiling LEAK!! HELP!?!?!

Question

I live in a house. One of the toilets in the second floor got clogged and the toilet bowl overflowed. I think some of the toilet water went into the air vent because there was a ceiling in the first floor, right beneath the overflowed toilet. So I went back up to second floor and cleaned up, and then the ceiling leak in the first floor stopped in about five minutes. I thought this was the end. However, two weeks later, there was another ceiling leak, this time in the basement. This ceiling leak was also straight beneath the toilet in the second floor. HOW DID THIS HAPPEN? WHAT IS THE CAUSE OF THIS?!?! HELP plz.

Answer 1

The water from the 2nd floor stool was traveling down the sewer pipe - it sometimes takes water a long time to collect and drip down through different ceiling materials. It was not running down the inside of the pipe, but down the outside of the pipe.

This should be the end of it. Fix the ceilings and keep that stool on the 2nd floor cleaned out good.

Answer 2

I doubt that is following an air vent, more likely it is seeping down inside the wall. Now that you have cleaned up the water, you will just have to wait for the water to dry, unless you want to tear the wall out. If there is any drywall damage you will see it within a week or so.

Answer 3

if you have only one heat system or if both systems are under the house it could have taken a while for the water to find a way out  dry the leak and see if it comes back if it does locate and repair if not this was the cause