Bathtub overflow

A tub overflow drain can be the cause of a leak even though it is a place not usually suspected. A water stain in the ceiling below a bathroom is often the first sign of a problem with a tub overflow drain. Most people start with the bold solution of opening up a huge hole in the ceiling to see what is leaking. There is another approach that involves looking for a hidden leak in the shower or tub and fixing that first to see if opening up the ceiling can be avoided.