Damp & seepage inspection
Find the damp before you pay for the flat.
A Megahedge inspector checks every wall and ceiling with a moisture meter and a thermal camera, traces each damp patch to its likely source, and sends you a report with photos and readings within 24 hours. Before you sign, or before the builder hands over the keys.
- Every finding has a photo and a reading
- We never do repair work
- Report in English and Hindi
- Inspectors carry ID and a booking code
VISIBLE
THERMAL
Pin reading vs dry reference
Likely source
Bathroom floor waterproofing in Flat 702 above
Repair before purchase or possessionBuilt for people buying resale flats, taking possession of new ones, or renting a home they haven't lived through a monsoon in.
Mumbai · Pune · Bengaluru · Chennai · Hyderabad · Kolkata
Why you find it in July
The flat looked dry in February. That's the problem.
Water gets into a flat in a handful of ways: through a terrace or external wall in the rain, through a failed bathroom floor above, through a leaking concealed pipe, up from the ground into a ground-floor wall, or around a window frame. Each leaves a pattern, and most of those patterns can be measured before they can be seen. That's the whole job.
Every way water gets in- 01
Fresh paint
A seller repainting before a sale is normal. It also covers the tide marks and peeling that would have told you where water comes in.
- 02
The dry season
Most flats are shown and sold between monsoons, when a seeping wall has had months to dry at the surface. The source is still there.
- 03
The flat above
The most common hidden source in an apartment is the bathroom of the flat above. From the flat you're buying it shows only as a ceiling patch that isn't there yet.
Where we look in a flat
Seven places in a 2BHK where an inspector spends the most time.
Every wall, ceiling and skirting gets scanned. These get extra minutes, because this is where water usually gets in.
- 1Bathroom walls, ceiling under the bathroom above
- 2Kitchen sink wall and concealed lines
- 3Rain-facing external wall and window sills
- 4Balcony floor slope and drain
- 5Wall beside the plumbing shaft
- 6AC drain point
- 7Skirting (rising damp on ground floors)
What it usually means
- Ceiling under the bathroom above
- A patch on the bedroom ceiling directly under the bathroom above usually points to failed floor waterproofing in that bathroom.
- Kitchen sink wall
- A patch that follows the line of the drain and grows after the tap runs usually means a concealed joint is leaking.
- Rain-facing external wall
- Damp that appears after driving rain and fades in dry weather usually means cracks in the external plaster or an open joint.
- Window sills and frames
- High readings only at the sill corners usually mean water is getting in around the frame, not through the wall.
- Ground-floor skirting
- A band of damp with a tide mark and white salts along the bottom of the wall usually means rising damp.
How it works
One visit. A report the next day.
- 01
Book the flat
Choose your city, home size and a time. Pay by UPI or card. Share who will open the door: seller, agent or the builder's site office.
- 02
We scan every wall
The inspector takes dry reference readings, then scans every wall, ceiling and skirting with a moisture meter and a thermal camera. A 2BHK takes about 90 minutes.
- 03
You get the report
Within 24 hours on WhatsApp: every finding pinned on a floor sketch with photos, thermal images, readings, likely source and a next step.
- 04
Use it
Show the seller and negotiate repairs or price. Send the builder the Defect Claim Pack. Book a re-scan after the repair to see it drying.
New flats
Taking possession? The defect clock starts with your keys.
Under Section 14(3) of the RERA Act, 2016, a structural defect or a defect in workmanship, quality or services brought to the builder's notice within five years from the date of handing over possession has to be rectified without further charge, within 30 days. The Possession Check gives you dated evidence on day one and a letter to send.
What you can book
Six things Megahedge does, all around one question: is this wall wet?
Pre-Purchase Inspection
Every room, every wet wall, every ceiling under a bathroom, before the agreement.
Dry reference 11Reading 41Possession Check
Seepage plus the snags that cause it, at handover.
The Report
Photo and thermal side by side, reading against the dry reference, source, severity, next step.
Defect Claim Pack
Dated evidence, the RERA deadline worked out, a letter to the builder.
Monsoon Watch
Humidity and leak sensors with WhatsApp alerts through the first monsoon.
Repair Check & Re-scan
The same spots, re-read against the original numbers, after the repair.
Ceiling 41 → 24 · sill 29 → 13 · skirting 26 → 25
Who books us
Four moments when a damp wall costs the least to find.
Before the token becomes an agreement.
The seller has repainted. You have seen the flat twice, in daylight, in the dry season. Book the inspection after you shortlist and before you sign the agreement for sale or pay a substantial advance. Use the report to ask for a repair before registration, a price adjustment, or to walk away.
Read moreStarting point
From ₹3,499
GST extra. Travel within city limits included. Free cancellation up to 12 hours before.
See a report before you book
Flat 602, Green Arcade, Pune.
A fictitious 2BHK with five findings. Three of them are below, with the reading, the reference and the next step.
Megahedge report · SS-8K2Q-602
Flat 602, Green Arcade
2BHK resale, 6th floor, built 2011
1
Before purchase
3
Before use
1
Monitor
- Bedroom 1Bathroom floor waterproofing in Flat 702 above
- Living roomWindow frame sealing and sill slope
- KitchenConcealed drain line joint behind the sink
- Bedroom 2Condensation in a closed corner
- BalconyBalcony floor slope away from the drain
01Bedroom 1
Repair before purchase or possessionCeiling, 0.6 m from the wall shared with the bathroom
Reading
Dry reference 11Reading 41Likely source
Bathroom floor waterproofing in Flat 702 above
Next step: Ask the seller to get the bathroom in Flat 702 repaired before registration, then book a re-scan.
02Living room
Repair before useWest wall, below the window sill, both corners
Reading
Dry reference 11Reading 29Likely source
Window frame sealing and sill slope
Next step: Ask the seller to reseal the frame and check the sill slope before the next rain.
03Kitchen
Repair before useWall behind the sink, 30 cm above the counter
Reading
Dry reference 11Reading 23Likely source
Concealed drain line joint behind the sink
Next step: Ask for the sink drain joint to be checked by a plumber; re-scan after the repair.
- Open the full sample report
We don't sell waterproofing.
Megahedge does not do repairs, does not take commission from contractors, and is paid only by the person who books. With no stake in the repair job, we have no reason to find more damp than there is. How we inspect
What buyers ask before they book
Plain answers about the instruments, access, timing and what the report can be used for.
What can a moisture meter and thermal camera actually find?
A pin meter reads how easily current passes between two pins pushed into plaster; a pinless meter reads through the surface to a shallow depth. Wet plaster reads higher than the dry reference wall we measure in the same flat. A thermal camera shows surface temperature, and damp surfaces are often cooler because water evaporates from them. Together they show where a wall is wetter than it should be, even behind fresh paint. Neither sees inside a pipe or through thick tiles reliably, and the report says where a reading was limited.
Will you drill or damage anything?
No. The inspection is non-destructive. Pin meters leave two pinpricks in plaster, which we only use where the seller or builder agrees; everywhere else we use the pinless meter and the thermal camera. We never cut, drill, open walls or lift tiles.
Does the seller or builder need to agree?
Yes, someone has to let us in. We give you a short message to forward to the seller, agent or builder's site office that says what the inspector will and won't do. Most visits happen with the seller's agent or the site engineer present.
Can you inspect in the dry season?
Yes, and most flats are bought then. A wall that leaked last monsoon usually still holds more moisture than a dry wall, and the pattern shows on the meter and the camera. A seasonal leak that has fully dried can be missed, so the report records the weather in the past 7 days and we say plainly when a dry-season visit limits what we can see.
Will you tell me whether to buy the flat?
No. We tell you where the damp is, how bad it is, where it most likely comes from and what to ask the seller or builder. Whether to buy, renegotiate or walk away is your decision.
Can I use the report in a RERA complaint?
You can attach it as evidence. It is dated, it numbers and locates each defect, and it records the inspector and booking reference. It is not legal advice, and whether a complaint succeeds depends on your case and your state's process. See the RERA defect guide for your state.
What if you find nothing?
Then the report says so, room by room, with the reference and the readings that support it, and the limits of what we could see. A clean report on the day of the visit is useful evidence too.
Can I attend remotely?
Yes. NRI buyers and anyone who can't be there can join a video call while the inspector works, and every report includes a 20-minute call to walk through the findings.
Not ready to book? Walk the flat with our 10-minute self-check and get a snag list to take to the seller.
Start the Damp CheckFind the damp before you pay for it.
Book a moisture and thermal inspection. Report on WhatsApp within 24 hours.