Screw type fittings especially in drain traps are more likely to leak than are glue type fittings.
The floor leaks the ceiling creeks.
A refrigerator with a blocked defrost drain for example can lead to ice buildup causing melted water to leak out and seep into the floor and onto the ceiling of the lower floor.
Water damage through the ceiling is somewhat common in florida so your sarasota home very well may have a leak somewhere in it.
In rarer situations the actual toilet or tub plumbing may have sprung a leak.
Where to find water leaks.
Pull up the carpet and the subfloor to expose the area where the squeak is located image 1.
Each time the tub is used splashed or draining water leaks through the floor and comes through the ceiling.
So first look for any signs on the ceiling for water damage.
7 places to check for water leaks most common water leaks in your house duration.
A squeaking noise is often the result of friction between two boards.
Again many people think that standing water is due to it coming through the floor and while it might have you must also check the ceiling.
A possible cause of a ceiling leak in a two story house is an upper floor bathroom.