Water Damage at Home: What to Do in the First 24 Hours

Whether it is a burst supply line, a leaking water heater or a slow drip that finally shows through the ceiling, what you do in the first day makes a real difference to how much needs repairing.

1. Stay safe first

• If water is near outlets, appliances or the electrical panel, do not walk through it. Turn off power to the area only if you can reach the breaker safely.
• Watch for sagging ceilings, which can hold a lot of water.
• If the water may be contaminated, such as from a sewer backup, avoid contact with it.

2. Stop the water

Shut off the water supply to the fixture, or the main shut-off valve for the house if you cannot find the source. Knowing where your main valve is before an emergency is one of the most useful things a homeowner can do.

3. Document everything before you clean up

Take photos and video of the affected areas, the source of the leak and any damaged belongings. If you plan to make an insurance claim, this record matters, and your insurer can tell you what they need.

4. Remove standing water and start drying

• Mop or wet-vacuum standing water.
• Move furniture, rugs and valuables out of wet areas.
• Open windows and run fans to improve airflow, if it is safe to do so.

Moisture trapped inside walls, under flooring or in insulation can lead to mold. The goal is to get materials drying as quickly as possible.

5. Do not close anything up too soon

Drywall and flooring can look dry on the surface while framing or subfloor underneath is still wet. Before anything is patched or painted, moisture levels should be checked so damage is not sealed in.

6. Get a proper assessment

A good repair starts by finding where the water actually went, not just where it shows. An assessment should include finding and fixing the source, checking moisture in the surrounding materials, removing only what cannot be saved and giving you a written scope for the rebuild.

A simple checklist

1. Safety first: power, ceilings, contaminated water.
2. Shut off the water.
3. Photograph everything.
4. Remove standing water and start airflow.
5. Call your insurer if you plan to claim.
6. Book an assessment before anything is closed up.