Lay down drop cloths or a tarp and a bucket under the leak to gather water and prevent further damage.
Leaky ceiling first floor.
Check out this list of possibilities about what to do when water leaks from the ceiling.
Whatever the cause of the ceiling leak when you first notice discoloration or the first signs of dripping water be aware that there may be much more hidden water spreading over the drywall above.
To fix a leaking ceiling first identify where the water is coming from by looking for parts of the ceiling that are sagging or stained.
So go up there and check the floor for water trails or any discolorations in the tile.
It s possible that a ceiling leak may have been caused by a leaky upstairs toilet.
More often than not a leaky bathroom is caused by a damaged seal in the wax ring that connects the toilet with the bathroom floor.
If there is a floor above the leaking ceiling i e.
A second story above a first story ceiling then the leak may be coming from several sources.
The only way to define the issue is to start tracking the leak you can open up the ceiling to see wiht a flashlight and track back to the soruce from there or in uninsulated ceilings walls you can use about a 1 2 hole to inspect with a fiber optic camera rent for about 25 40 day from home depot or tool rental stores or some auto parts stores or buy at amazon o harbor freight or such.
You can minimize further damage and avoid widespread replacement of ceiling surfaces by drilling a hole in the ceiling in the center of the damaged.