What should I do immediately after water damage?
Act fast and stay safe: stop the water at its source if you can do so safely, shut off power to any wet area, move people and pets out of harm’s way, then start removing standing water and getting air moving. The first 24–72 hours decide whether this stays a water problem or becomes a mold problem, so call a certified restorer right away.
Water damage feels chaotic in the moment, but the right early moves are simple and they matter enormously. The goal in those first hours is to keep everyone safe, stop more water from arriving, and get trapped moisture out of your building materials before mold has a chance to take hold. Below is the calm, step-by-step version, written by people who do this every day. Speed matters, but so does doing the right things in the right order. When water is actively spreading, our water damage restoration team answers around the clock and can start stabilizing the situation within the hour.
Why the first hours matter so much
Most of a home is made of organic, absorbent material: paper-faced drywall, wood framing, subfloor, insulation, and carpet. Those materials soak up water quickly, and mold spores, which are present in every building all the time, only need a wet surface to feed on before they begin to colonize. That colonization can start within roughly 24–48 hours of materials getting wet. After about 72 hours, the conversation shifts from drying and saving materials to removing and replacing them.
That is why the early response is treated as an emergency rather than a scheduled chore. The faster trapped moisture is pulled out of walls, floors, and framing, the more you save and the lower the mold risk drops. A flood left sitting overnight because it felt like tomorrow’s problem can turn a salvageable floor into a tear-out. The good news is that you do not have to solve all of this yourself. Your job in the first hours is to make the space safe and limit the spread, then let a certified crew handle the measured drying.
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What to do, step by step
Work through these in order, and skip any step that would put you at risk. Your safety always comes before any property.
- Stay safe first. If water is near outlets, the electrical panel, or appliances, treat it as an electrocution risk. Shut off power to the affected area at the breaker only if you can reach it without standing in water. If you cannot reach it safely, leave the area and call an electrician or your utility.
- Stop the water at its source. For a burst pipe, failed water heater, or leaking appliance line, shut off the local valve or the home’s main water supply. Stopping the inflow is the single most effective thing you can do to limit damage.
- Protect people and pets. Move everyone out of standing water and away from sagging ceilings or unstable areas. If the water came from sewage or a ground flood, keep people away entirely, because that water can carry bacteria and biohazard.
- Document everything. Before you move things, take photos and video of the standing water, the source, and the affected rooms. This record is exactly what an insurance adjuster will want to see, and it protects your claim.
- Remove standing water. Use a wet vacuum, mop, or towels to take out as much surface water as you safely can. Lift area rugs and move small furniture to a dry spot so they are not soaking longer than necessary.
- Get air moving. Open interior doors, run fans, and let air circulate to start surface drying. Be cautious about opening windows in Las Vegas summer heat, because humid outside air can work against you in some conditions.
- Call a certified restorer. Surface drying is not the same as drying the structure. Trapped moisture inside wall cavities and subfloors needs measured drying with the right equipment, which is where professional structural drying takes over.
What is free, and what mold testing actually involves
Many homeowners assume that calling a restoration company means lab testing at no charge. It is worth being precise here, because the words matter. The free part is the on-site inspection: a certified technician comes out, looks at the affected areas, checks for hidden moisture, and tells you honestly where you stand and what the situation actually requires. There is no charge and no obligation for that visit. You can book a free inspection any time after a water event.
Lab testing is a separate, paid add-on. If the inspection suggests it is warranted, samples are sent to an independent third-party lab and billed at cost, with no markup. That independence is the point: the company recommending the work is not the one grading its own results. So the honest framing is that the inspection is free, and lab analysis is an optional, at-cost service used only when the facts call for it. We will tell you when you do not need it, which is the opposite of how an upsell works.
A note on health and doing this by the standard
Water damage and mold are health-sensitive topics, and it is worth being careful rather than alarmist. We do not offer medical diagnosis, and if anyone in the home has respiratory concerns or a compromised immune system, that is a conversation for a physician. What we can speak to is the building science and the national standard for how this work should be done.
Our founder, Craig Herrmann, co-authored the ANSI/IICRC S520 standard, the national reference document for mold remediation, and is IICRC Master Certified. That matters because it means the drying and any remediation are done to a documented rulebook rather than to “feels dry to the touch.” Every technician on the job is an in-house W-2 certified employee, never a subcontractor, so one accountable crew owns the water, the drying, and the mold risk from the first reading to the final verified-dry target. You can read more about Craig’s credentials if you want to understand who is setting the standard for your job.
What to do next
Once the immediate safety steps are done and the source is stopped, the priority is getting a measured drying plan in place before the 24–72 hour window closes. A certified crew will map the moisture with meters and thermal imaging, set documented dry targets, and run dehumidification and air movement until the structure reaches those targets, not just until the surface feels dry.
If the water was clean and caught quickly, drying may be the whole job. If it sat too long or came in contaminated, the work may extend into flood restoration with removal of materials that cannot be salvaged. Either way, the path forward is the same: get an honest on-site read, dry to verified targets, and keep the documentation an insurance adjuster will accept. The faster you make that first call, the more you keep and the less you replace.
Related questions
- How long do I have before mold starts after water damage?
- Mold can begin to colonize wet organic materials within roughly 24–48 hours, and after about 72 hours the focus usually shifts from saving materials to removing them. That is why drying is treated as an emergency. The faster trapped moisture is pulled out of walls and subfloors, the lower the mold risk. If water is actively spreading, a fast water damage restoration response is the single best thing you can do.
- Can I just dry it myself with fans and open windows?
- For a tiny, quickly-caught spill on a hard surface, sometimes. But household fans cannot pull water out of a soaked wall cavity or subfloor fast enough to beat mold’s clock, and open windows in Las Vegas summer can drive humid air in. Without dehumidification and moisture readings you are guessing whether it is dry, and proper structural drying is what removes the moisture you cannot see.
- Is mold testing free after water damage?
- The on-site inspection is free, with no obligation. Lab testing is a separate, paid add-on: if the inspection shows it is warranted, samples go to an independent third-party lab and are billed at cost. So the inspection is free, and lab analysis is optional and at-cost, used only when the facts call for it. You can schedule a free inspection any time.
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