Gradual leak between second and first floors - any ideas?
July 27, 2010 3:09 PM Subscribe
Verrrrryyyy slooooowwwwly accruing water damage on our first floor ceiling. What gives?
Over the past year or so, a water stain has been very, very slowly growing on the ceiling of our first floor, somewhat under a bathroom but not directly under a bathroom. We've had a few plumbers come to take a look, and they all said they thought water was seeping through the tile in our bathroom, so we took several measures to stop getting the floor wet (and sealed the tile as well). The plumbers all mentioned that the very slow rate of the water damage indicated that it wasn't a leaking pipe. We also tested the shower basin and it is intact. The leak is still happening, although we actually bought a moisture reader and it never 'reads' as moist anymore - or we never 'catch' it reading moist anyway. We marked the outer edges of the water stain a few months ago, though, and the water stain has expanded in all directions.
I'd say after about a year it is now 1 foot by 6 inches in size. It's not very dark, but getting darker. After we thought we fixed it, I 'cleaned/removed' the stain with a bleach/water mixture so it first I thought that was just reemerging, but now it is clearly a large stain than before. What the heck gives? Any ideas? Who would you call to figure it out?