That gap — between what happened and what's provable a week later — is where claims get reduced. The good news is that closing it takes about half an hour, and most of it is stuff you'd do anyway.
The first 30 minutes, in order
- Stop the water. Shut off the fixture valve, or the main if you can't isolate it. If it's a supply line, kill the water before you touch a camera. Safety and mitigation come first.
- Kill power to the affected area if water is near outlets, panels, or fixtures. Don't wade into a room with a submerged receptacle to get a better photo.
- Photograph before you touch anything. Standing water, water lines on walls, saturated carpet, drips in progress, wet contents. Wide shot first so the room is identifiable, then move in.
- Shoot a 60-second walkthrough video narrating what you're seeing, where you are, and what time it is. Adjusters read video as context; still photos alone lose the "which unit, which wall" thread.
- Photograph the source, not just the damage. A burst supply line, a failed water heater fitting, a backed-up drain — the cause determines coverage more than the damage does.
- Capture the ceiling or floor above. In apartments and multi-family buildings, the origin is usually somebody else's fixture. Document it before it's repaired and gone.
- Note the time and write down the discovery time. "Found at 6:40 a.m., water off at 6:47" belongs in your log.
- Then mitigate. Extract water, move contents out, set fans, tarp what needs tarping. Most homeowners policies include a duty to mitigate — reasonable steps to stop the damage from getting worse — and skipping it can cost you part of the claim.
- Make temporary repairs only. Hold off on permanent repairs and on throwing anything out until the adjuster has inspected, or until they explicitly release you.
- Keep every receipt — fans, dehumidifier rental, tarps, a hotel night, the emergency plumber. These are usually reimbursable and almost always under-claimed.
- Report it promptly. Same day if you can. Late notice is one of the easiest reasons for an insurer to push back.
- Bag or photograph damaged contents before disposal. If a sodden rug has to go for health reasons, document it thoroughly first, including the label and any purchase record.
Why the clock actually matters
Two timelines are running against you.
The first is biological. EPA guidance is to dry water-damaged areas and materials within 24–48 hours, because in most cases mold won't grow if things are dried inside that window. The EPA is explicit that this is a guideline, not a guarantee — but adjusters and restoration contractors treat it as the benchmark, and so should you.
The second is contractual. Under the IICRC S500 standard that restoration pros work from, water is classified as Category 1 (clean/sanitary), Category 2 (significantly contaminated), or Category 3 (grossly contaminated). Clean water left sitting degrades toward Category 2 in roughly 24–48 hours depending on temperature and what it's soaking into. Same leak, different category, very different scope of work — and the only thing that proves it started as Category 1 is what you photographed on day one.
Tools that turn "I think it's wet" into a reading
Photos of a stain are an opinion. A photo of a stain next to a numeric reading is evidence — and it's how you find the wet parts you can't see.
A pinless moisture meter
Paid linkThe single highest-value tool here. It reads moisture through the surface to roughly ¾"–1½" deep without leaving pinholes in finished drywall, which matters when you're scanning a wall you don't want to repair twice. Take a reading on a known-dry wall in the same room first — that's your baseline — then photograph each reading with the meter held against the wall so the location is visible in frame.
Browse pinless moisture meters on AmazonA borescope / endoscope inspection camera
Paid linkLets you see inside a wall or ceiling cavity through a small drilled hole instead of opening three feet of drywall on a hunch. It's a screening tool — it won't measure moisture or tell you the material is compromised — but "here's the wet joist bay, on camera" is a much stronger conversation with an adjuster than "we cut it open and found stuff."
Browse borescope cameras on AmazonWater leak alarms
Paid linkThe cheap after-action item. Once you've been through one claim, putting sensors under the water heater, behind the washer, and under every sink turns the next event from a 30-minute documentation scramble into a 30-second shutoff.
Browse water leak alarms on AmazonSupers: a few extra habits
If you manage a building, add three things. Put something in frame that identifies the unit — a door number, a riser tag, a piece of paper with the address and apartment. Photograph the same spot at the same angle each day while it dries, so the drying log is visual. And document the neighboring units you inspected even when they're clean; proving you checked and found nothing is worth as much as proving you found something.
Where tamper-evident photos fit
The weakness of ordinary phone photos is that metadata is trivially editable, and everyone involved in a disputed claim knows it. That rarely matters in a straightforward loss — but in a contested one, "when exactly was this taken, and has it been altered?" becomes the whole argument. EtchImage captures photos that are C2PA-signed at the moment of capture with a verified timestamp, so the file itself carries cryptographic proof of when it was taken and that it hasn't been modified since. C2PA is an open standard, not a proprietary format — which means the proof travels with the file to your adjuster, your contractor, or your attorney. It doesn't change what you photograph. It changes whether anyone can credibly argue about it later.
The leak is going to cost you something. Thirty minutes of good documentation decides how much.
Sources: EPA — A Brief Guide to Mold, Moisture and Your Home · EPA Mold Course Chapter 9 · IICRC S500 water categories · SERVPRO — water damage insurance claim tips · PuroClean — documenting water damage for claims · Wagner Meters — pin vs. pinless · C2PA Content Credentials specification