What to Do After Water Damage: The First 48 Hours

The first 48 hours after water damage

The EPA's window for drying wet materials before mold gets a foothold is 24 to 48 hours, and it opens the moment the water arrives, not when someone notices it. What you do in the first hour decides how much of that window is left.

Updated October 29, 2026 · Sources at the bottom

Hour one

Turn the water off. For a toilet or sink that means the little valve behind it; for anything else, the main where the line enters the house. A leaking water heater gets its cold inlet closed and its power or gas shut off.

Keep clear of electricity. If anything plugged in is sitting in the water, stay out of that room. Flip breakers only if the panel is somewhere you can stand on a dry floor.

If the water came from a creek or the street, leave it alone until officials say the area is safe, and assume it is contaminated.

Then photograph every wet room, wide, plus whatever failed, before you start moving furniture.

Day one

Report it to your insurer. Write down the claim number and the name of whoever took the call.
Get furniture and area rugs off the wet floor. Aluminum foil or wood blocks under the legs keep stain off the carpet.
Get the standing water out with towels or a shop vac. More than a spill, call a restoration company.
Shut the windows. Run the AC and any dehumidifier you own. A humid Durham afternoon pushes more water in through an open window than it takes out.
Don't throw out wet carpet or drywall until the adjuster has seen it or you have good photos.

Day two

Pad and drywall that still feel soft or have swollen are usually coming out, and the rest of the room dries faster once they do. Ask whoever is drying to take readings inside the wall and under the floor, since water travels under flooring and climbs drywall. Check one level down, too: water on the first floor finds its way into the crawl space. And read every form before signing it, especially any page that mentions your insurance.

If it was a frozen pipe

Expect the real leak when the pipe thaws. Shut the main as soon as you suspect a freeze, and open a faucet so the line drains as the ice melts. No open flames on the pipe. Frozen pipes in Durham.

If you can't stay

No heat, no running water, a ceiling on the floor, or sewage in the living space: any of those is a reason to ask the insurer about additional living expense coverage. Keep every receipt. If you rent, notify the landlord in writing today. What North Carolina landlords have to fix.

Questions Durham homeowners ask

How long does it take for mold to grow after water damage?

EPA guidance is to dry water-damaged materials and belongings within 24 to 48 hours to head off mold. During a Durham summer the outside air stays hot and humid for weeks, so a soaked wall cavity or crawl space won't dry by itself; it needs a closed house and dehumidifiers running.

Should I file an insurance claim for a small leak?

It can come up at renewal. For a small loss, weigh the repair cost against your deductible first, and ask your agent how a claim would affect your renewal.

Can I stay in the house during drying?

For a clean water job, most people do. Expect noise, since the machines run day and night. With sewage or river water in the house, mold on the walls, or the heat out, staying somewhere else is usually the safer call; check what your policy pays toward it.