We have an intermittent problem with water somehow getting from an upstairs bath/shower to our living room ceiling. There is no obvious explanation for the phenomenon and several people (including our plumber) who've looked at it are perplexed as well. It seems likely that the living room ceiling is going to have to be opened up to facilitate identification and repair of the problem. Looking for recommendations for someone with appropriate expertise who does quality work that doesn't 'break the bank'. Many thanks!