I have a leak somewhere between the two floors of my house (water drips out of a ceiling fixture hole). Due to a layer of board above my ceiling (35 year old house) I cannot see any of the piping. Who should I talk to that may have expertise locating this leak? I have tried plumbers and general contractors, both of whom kind of scratched their heads and said something useful like "boy you have a problem don't you?" My goal, of course, is not to have to destroy large portions of the house to find the leak.
Is there any other type of person I should be talking to, or am I just not having luck finding the right people? Any help is greatly appreciated.
Thanks,
Rick L.