How Do I Know If Water Got Into My Walls After a Flood?

Start with a close look at your walls after a flood. Water leaves marks that are easy to spot if you know what to check. Look for discoloration, especially dark brown or yellow stains that spread upward from the baseboards. Bubbling or peeling paint is another strong sign that moisture has soaked into the drywall behind it.

Also check for swelling or warping. Drywall that feels soft or bulges outward when you press on it has likely absorbed water. Pay attention to the texture: a wavy or uneven surface suggests the wall board has taken on moisture and may need replacement.

• Dark stains or rings on the wall surface
• Bubbling, cracking, or peeling paint
• Swollen or bulging drywall
• Warped baseboards or trim
• Visible mold spots that appear quickly

Run your hand along the wall surface, especially near the floor and around windows or doors. Damp or cool spots can indicate that water has wicked up from the floodwater. Pay attention to areas where the wall meets the floor, since water often pools there first.

If you notice any wetness, avoid touching electrical outlets or switches on that wall. Water and electricity are a dangerous mix. Turn off power to the affected area if it is safe to do so, and consult an electrician if you have concerns.

If you see or smell signs of water in your walls, act quickly to prevent further damage. Remove wet items from the area and increase air circulation with fans or a dehumidifier. Do not delay, as mold can begin growing within 24 to 48 hours in warm, damp conditions.

For significant water intrusion, professional help is often necessary. The pros can extract water, remove damaged drywall, and dry out the wall cavity. They can also identify the extent of the damage and advise on the right repair approach. Check your insurance policy to understand what might be covered; policies vary, and your insurer decides what is covered.