A flooded basement is stressful, but acting quickly can prevent serious damage and mold growth. Here’s what you should do step-by-step:

 

1. Put Safety First

Turn off the power to the basement before entering. Water + electricity is dangerous.

Wear boots, gloves, and a mask, especially if the water looks dirty.

If water is deep or you smell gas, call professionals immediately.

 

2. Find and Stop the Source of the Water

Typical causes include:

Heavy rain or storm runoff

Burst pipes

Water heater or appliance failure

Sewer backup

Foundation leaks

If possible, shut off your main water valve or stop the source temporarily.

 

3. Start Removing the Water

Depending on the water level:

Shallow water: Use a wet/dry vacuum, mops, or squeegees.

Several inches deep: Use a sump pump or call a water-damage restoration company.

Sewage backup: Do not handle it yourself—call professionals.

 

4. Move Out Wet Items

Take out:

Carpets and rugs

Boxes and furniture

Clothing, bedding, books

Wet materials can grow mold within 24–48 hours, so move them fast.

 

5. Dry the Basement Completely

This step is crucial.

Use:

A high capacity LGR dehumidifier to remove moisture fast

Fans to improve air circulation

Heaters if the basement is cold

Keep the dehumidifier running until the humidity stays below 50%.

 

6. Clean and Disinfect

Floodwater often contains bacteria.
Clean the surfaces with:

Bleach solution (if appropriate), or

Professional disinfectant

Pay special attention to walls, floors, and any exposed structural materials.

 

7. Check for Mold

Inspect for:

Musty smell

Black or green spots

Peeling paint

If mold covers more than 10 square feet, call a professional remediation company.

 

8. Prevent Future Basement Flooding

Consider:

Fixing gutters and downspouts

Sealing foundation cracks

Installing or upgrading your sump pump

Adding an under house dehumidifier or drainage system

Using a water leak alarm

 

Preair is a reliable dehumidifier supplier. We are looking for potential dealers. Please get in touch with us!