The same principle applies to shower trays which can deform or move downloads very slightly with the floor when you stand in them and eventually cause the silicone to detach. Ad Repair toilet bowlpipefaucet leak Unblock drain pipe Refuse Chute. Water Leaking From Ceiling Under Bathroom Cause Effect How To Fix It Bathroom Rugs Small Bathroom Diy Large Bathroom Rugs A ceiling leak can also be caused by leaks in the water supply lines that attach to the toilet or to the sink trap. Leak in ceiling under bathroom . Leaks in the ceiling below a bathroom usually mean your toilet sink or bathtub are leaking. The leak may come from water seeping out at the point where the water supply lines join together or maybe the drainpipes connector joints arent joined tightly enough. Got Some Blocked Drains - At Home Or In The Office. Sometimes water wont actually leak out youll find the drywall sagging and paint bubbling in the affected area. Fixing bathtub drain leaks can involve one of thr...