I have water coming into my closet when it rains but all the roofers so far that I had check it can't find the problem. Any suggestions on finding the source of the leak?
I've used Wonderboard, but this stuff they're showing me isn't green! I am a renter in a NYC apartment, built around 1960. I have had a leak from the apartment upstairs in my 1/2 bathroom and master bath which share a common wall. The leak comes through the ceiling in the 1/2 bath in kind of a square shape. In the master bath, the leak is only slightly apparent in the ceiling.