What to do in the first 24–48 hours
Last updated: 2026-06-17
After water, fire, or flooding, the first day or two decides how bad the damage gets. Water wicks into materials by the hour, and mold can begin within 24–48 hours. Smoke and soot become more corrosive and harder to clean the longer they sit. Move through the steps below in order — safety first, then stop the source, then document, then mitigate, then call a pro.
Stay safe
- Don't enter standing water near outlets, appliances, or the electrical panel — shut power to affected areas if you can do so safely.
- After a fire, stay out until the fire department or authorities clear the structure.
- Watch for structural hazards, slick surfaces, and (with sewage or floodwater) contamination — wear gloves and boots, and keep children and pets away.
- If you smell gas or suspect the structure is unsafe, leave and call for help.
Stop the source
- For a plumbing leak or burst pipe, shut off the water at the fixture or the main shutoff valve.
- For a roof leak, place buckets and, if safe, tarp the area to keep more water out.
- For an appliance failure, unplug and shut off the supply line.
- You can't dry out a home that's still taking on water — stopping the source comes before everything else.
Document everything
- Take wide and close-up photos and video of all damage before moving or cleaning anything.
- Capture the source, the spread, and damaged belongings; note the date and time.
- Start a written inventory of damaged items.
- Keep receipts for anything you buy or pay for during the emergency.
Mitigate further damage
- Remove standing water you can safely reach with a wet/dry vac, mop, or pump.
- Move undamaged valuables, electronics, and documents to a dry area.
- Lift furniture off wet carpet (foil or blocks under the legs prevents stains and rust).
- Get air moving — open windows and run fans if humidity outside is lower than inside.
- Don't make permanent repairs yet; your insurer needs to see the loss first.
Call your insurer and a restoration pro
Open your insurance claim promptly — most policies require prompt notice — and call a restoration professional. The DIY steps above buy time, but professional extraction, structural drying, and moisture mapping within the first day or two are what actually prevent mold and hidden structural damage. A vetted local pro will also document the loss in the format your adjuster expects. See our insurance claim guide for the full process.
Get a pro on the way
Time is the enemy here. Connect with a local water damage pro, a fire damage pro, or a sewage cleanup pro — vetted, independent, and available fast.
Frequently asked questions
- Mold can begin growing within 24–48 hours of water exposure, and water keeps wicking into drywall, insulation, and subfloor the entire time it sits. Acting fast is the single biggest thing you can do to limit both the damage and the cost.
- Stop the source and remove standing water and valuables, but photograph and video everything before you move or discard anything — your insurer will want to see the damage as it was. Don't make permanent repairs until the loss is documented and, ideally, seen by an adjuster.
- If there's standing water near outlets or the panel, keep power off in affected areas and don't wade through water that may be energized. After a fire, don't re-enter until authorities say it's safe. When in doubt, leave and call a professional.
- As soon as the situation is safe and the source is stopped. Professional extraction and drying within the first day or two is what prevents mold and secondary structural damage — waiting is what turns a manageable loss into a major one.