Confirmed
Multiple evidence points support the cause.
What you are seeing
Symptoms and likely causes
Typical signs
- Disks of water on the terrace hours after rain
- Outlets with debris, planters or tiles blocking flow
- A low spot against the parapet
- Ceiling stain under that low spot
Causes we actually check
- No slope, or slope to the wrong place
- Blocked or undersized outlets
- Later tiling or planters that created dams
- Parapet-slab joint in the pond
How Gracia diagnoses
Evidence before treatment
We photograph ponding, check outlets, and refuse to warrant a coat that leaves a lake. Slope correction is a line item, not a free extra. If you decline drainage work, it is written as an exclusion.
Kompally terrace case: ponding near the parapet, stain two metres away in the bedroom. Outlet and joint were the job. The PU coat came after.
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
Terrace seepage in Kompally — PU membrane after thermal mapping
Problem. Top-floor bedroom ceiling stained after every monsoon. Previous contractor had coated the stain from below.
Evidence. Cold path along the parapet-slab joint. The bedroom stain sat two metres away from the entry point.
Confirmed. Failed parapet joint and worn terrace screed. The ceiling stain was the exit, not the source.
Treatment. Joint detailing, PU elastomeric membrane on the walkable terrace, outlets cleared.
Testing. 24-hour pond test before handover.
Full case study →Questions
About this problem
A membrane is not a drain. Some systems tolerate brief wetting. Standing water for hours is out of most warranties unless drainage is in the quoted scope.
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Need this diagnosed, not guessed?
Book a free inspection. Written report before treatment. Warranty on the quotation.