We have a leak from the upstairs restroom to the downstairs ceiling—any idea what the source of the leak might be?
Bathroom plumbing solutions can be difficult because there are three appliances that can cause plumbing problems: the sink, the toilet, or the shower. Whenever you have a leak coming through the floor from an upstairs bathroom, you first need to check the toilet and shower.
Toilet: The connection between the toilet and the floor is sealed by a wax ring. The most common source of a leak of this nature is a faulty, worn-out wax ring which means that every time the toilet is flushed, water leaks into the ceiling.
Shower: If the leak continues while the fixture is not running, then the leak is coming from a water pipe. If, however, the leak only occurs while the water is running, the problem is probably a faulty tile in the shower or the shower faucet.
If you cannot find the source of the leak or have found it but cannot fix it, you may want to contact one of many plumbing contractors or plumbing companies.