Confirmed
Multiple evidence points support the cause.
What you are seeing
Symptoms and likely causes
Typical signs
- Wet patch downstairs centred under the bathroom drain
- Water sitting around the trap after a shower
- A recently replaced trap that did not stop the leak
- Smell from the drain plus a ceiling stain below
Causes we actually check
- Trap not sealed to the wet-area membrane
- Cracked trap body or loose waste pipe under the filling
- Membrane terminating short of the drain opening
- Overflow from a blocked trap travelling through the tile bed
How Gracia diagnoses
Evidence before treatment
We treat trap leakage as a junction problem until evidence says it is plumbing. Optical and thermal on the ceiling below. Replacing the grate without detailing the membrane is how the same leak returns. Pipe replacement stays out of scope unless quoted.
Hyderabad apartments change traps as a first DIY step. Sometimes that is right. Often the waterproofing around the old trap was never dressed in. Inspection is cheaper than a third trap.
Probable
Evidence indicates the cause; further verification may still be required.
Possible
One or more clues exist, but the evidence is not enough for a firm conclusion.
Excluded
Inspected, and no supporting evidence found in the inspected area.
What the Leak Diagnostic Report contains → · Thermal diagnosis cluster
Local case
Bathroom leakage into the floor below — LB Nagar
Problem. Water marks on the living-room ceiling under a first-floor bathroom after every shower.
Evidence. Moisture concentrated at the bathroom floor-wall junction, not at the tap line.
Probable. Failed wet-area membrane at the floor-wall joint. Concealed pipe leak not supported by the scan; excluded pending any opening.
Treatment. Injection grouting at the joint, two-coat wet-area system. Plumbing left in place — not in scope.
Testing. Shower test after curing; ceiling below checked the next day.
Full case study →Questions
About this problem
Only if the trap body or pipe was the source. If the membrane does not dress into the drain, a new trap leaks the same way. That is why we inspect the junction.
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