09-20-2018, 07:35 AM
I had drywall water damage on the bedroom wall that is shared on the other side with the bathroom (tub/and shower). Turned out that it was caused by the air vent pipe going through the roof right above. The material that they used to seal around the pipe on the roof wore out and every time it rained...water drained down inside the wall causing the sheet rock to bubble and become soft.