Can Storm Surge From a Hurricane Destroy a Foundation?

Storm surge water is heavy and moves with powerful force. It can wash away the soil supporting your foundation, creating voids or channels. This process, called scouring, removes the stable ground your foundation rests upon. Without proper support, sections of the foundation can shift, crack, or even collapse into the newly created gaps.

The saltwater in a surge also chemically weakens certain soil types, making them less stable. As the water recedes, it continues to pull soil particles with it. This ongoing erosion can happen quickly during the storm event. The result is a foundation that is no longer level or properly supported, leading to serious structural issues throughout your home.

Your safety is the top priority after a storm surge event. If your foundation appears damaged, the entire structure could be unstable. Wait for a qualified professional to assess the situation before you go inside. Look for obvious signs like large cracks, leaning walls, or portions of the foundation that are no longer attached to the home.

Floodwaters can hide dangers like exposed rebar, broken glass, and slippery surfaces. Electrical systems may be shorted and live wires could be in the water. Gas lines might be cracked. Let the fire department or utility company secure these hazards. Your local water damage pros can help with water removal after the structure is deemed safe to enter.

• Do not enter the home until a structural engineer or inspector declares it safe.
• Assume all utilities are dangerous; do not attempt to restore power, gas, or water yourself.
• Document all visible damage with photos and videos from a safe distance for your records.
• Contact your insurance company to start a claim. Policies vary, and your insurer decides what is covered.
• Keep children and pets away from the property due to unstable debris and hidden hazards.
• Wear sturdy boots and gloves if you must be near the property to avoid injury from sharp objects.

Foundation repair after a storm surge is a major undertaking. Costs depend heavily on the extent of damage, the type of foundation, and local construction rates. Repairs can range from underpinning and pier installation to a complete foundation rebuild. Homeowners often get multiple estimates from qualified foundation repair contractors to understand their options.

Work closely with your insurance adjuster, but understand that coverage for earth movement or flooding often requires separate policies. Policies vary, and your insurer decides what is covered. Standard homeowners policies typically exclude flood damage, which often includes storm surge. You may need a separate flood insurance policy through the National Flood Insurance Program for this specific peril.