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Can a Storm Cause Foundation Damage to My Home?

Last updated October 25, 2026

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The short answer

How Storms Damage Foundations

Heavy rain is the most common culprit. When soil around your foundation becomes saturated, it expands and puts pressure on the walls. This can cause cracks, bowing, or even shifting of the foundation.

Fast-moving water from a storm can erode the soil underneath, creating voids. Without support, sections of the foundation may settle or sink. Wind-driven debris, like tree limbs, can also strike and crack exposed foundation edges.

Signs of Foundation Damage After a Storm

After a storm, check for new or widening cracks in interior walls, especially near doors and windows. Look for doors that stick or windows that no longer close properly, as these can indicate shifting.

Outside, inspect the foundation for visible cracks, spalling (flaking concrete), or gaps between the foundation and the soil. Also, check for pooling water near the base, which signals poor drainage and ongoing risk.

If you notice any of these, act quickly. Moisture can worsen the damage and lead to mold issues inside your home.

  • New cracks in walls, floors, or foundation
  • Doors or windows that stick or don't latch
  • Gaps between foundation and soil
  • Pooling water or erosion near the base
  • Uneven or sloping floors

What You Can Do Right Away

Your first step is to reduce water pressure on the foundation. Clear gutters and downspouts so water flows away from the house. Extend downspouts at least a few feet from the foundation.

If you live in Kirkland, keep your shutoff valve location written down in case a storm causes a leak inside. Also, remove any soaked debris from around the foundation to allow air to circulate and prevent moisture buildup.

Keep an eye on the weather forecast. If more rain is coming, consider temporary measures like sandbags or tarps to divert water away from vulnerable spots.

When to Call a Professional

If you see significant cracks, shifting, or if your foundation has settled, it's time to consult a professional. A local water damage pro can assess the situation and recommend the right course of action, whether that's drying, waterproofing, or stabilizing.

Only a qualified structural engineer can determine if the damage is serious. For water-related issues, a water damage pro can handle drying and cleanup, but for structural repairs, you may need a foundation specialist.

If you have insurance, check your policy to see if storm damage is covered. Policies vary, and your insurer decides what is covered.

  • Cracks wider than a quarter inch
  • Foundation walls that bow inward
  • Settling or sinking in one corner
  • Water in your basement or crawl space
  • Visible erosion or soil washed away

Preventing Future Storm Damage

Good drainage is your main defense. Ensure the ground slopes away from your foundation on all sides. Consider installing a French drain or extending downspouts further if you notice pooling.

In the mild marine climate with wet winters and dry summers, keeping soil moisture consistent helps. During dry spells, water the soil near the foundation to prevent it from shrinking and pulling away, which can cause cracks.

Regularly inspect your foundation for small cracks and seal them with a flexible masonry caulk. This keeps water out and prevents small issues from becoming big ones.

Need help right now?

Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.

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Frequently asked questions

Can a storm cause foundation damage even if my home is new?

Yes, even new foundations can be damaged by storms, especially if the soil is not compacted properly or drainage is poor. New homes may settle during the first few years, and heavy rain can accelerate that. Regular inspections help catch issues early.

What should I do if I see a crack in my foundation after a storm?

First, document it with photos and note the size and location. If the crack is small (hairline), monitor it. For larger cracks or if you see water entering, contact a professional to assess. Avoid sealing cracks until you know the cause.

Is foundation damage covered by homeowners insurance?

Coverage varies widely. Some policies cover sudden, accidental damage like a tree falling, but not gradual settling or water seepage. Check your policy documents and talk to your insurer. Policies vary, and your insurer decides what is covered.

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