The short answer
How Storms Stress Your Foundation
Storms bring heavy rain that soaks the ground around your home. When soil becomes fully saturated, it expands and pushes against your foundation walls. This hydrostatic pressure can cause hairline cracks or widen existing ones, especially in older foundations.
Falling tree limbs or debris during high winds can strike the foundation directly, causing chips or larger cracks. Rapid temperature drops after a storm can also make concrete contract, adding stress. If your home sits on clay-rich soil, the expansion and contraction from wet and dry cycles can be more pronounced.
What You Can Do Right Away
Clear any debris from around the foundation, including leaves, branches, and soil that may have piled up. Make sure gutters and downspouts are directing water away from the house. If you see standing water near the foundation, use a pump or siphon to remove it.
Document any cracks with photos and notes. This can be useful if you decide to file a claim with your insurance company. Keep an eye on the cracks over the next few weeks to see if they change. Wet winters and heavy rain can make these issues more likely, so check your foundation after major storms.
When to Call the Pros
If you notice large or growing cracks, or if water is entering your basement, you should contact local water damage pros. They can assess the situation and recommend the right course of action. They may suggest foundation stabilization or waterproofing, depending on the cause of the cracks.
The pros will inspect the foundation, check for drainage issues, and determine if the cracks are structural or just cosmetic. They can also help with water extraction if your basement has flooded. Acting quickly can prevent further damage to your home's structure.
- Cracks wider than 1/4 inch
- Cracks that are actively leaking water
- Multiple cracks in the same area
- Signs of foundation shifting, like sticking doors
- Cracks that have appeared or grown after a storm
- Concern about the stability of your home
Preventive Steps for Future Storms
Improve drainage around your home by extending downspouts and grading the soil so it slopes away from the foundation. Consider installing a French drain or a sump pump if you have recurring water issues. These measures can reduce the pressure that causes cracks.
Keep trees and shrubs trimmed so branches don't fall on the foundation during a storm. If you have a basement, check for cracks and seal them with a masonry sealer before the rainy season. These steps are worth the effort in areas with wet winters and frequent storms.
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Call Now (425) 407-5186Frequently asked questions
What if I see a crack but no water is coming in?
Even a dry crack can be a sign of pressure. Have a professional inspect it, especially if it's wider than a hairline. They can determine if it's structural and recommend sealing or stabilization. It's better to address it early than to wait for water to appear.
Will my insurance cover foundation cracks from a storm?
Policies vary, and your insurer decides what is covered. Some policies cover sudden water damage, but gradual settling or wear may not be covered. Review your policy and talk with your insurance company about the specific cause. Document the damage with photos and notes.
How can I tell if a crack is serious?
Serious cracks are usually wider than a quarter of an inch, run across the foundation, or are accompanied by sticking doors or windows. If you see water seeping through, that's a clear sign. A professional can assess the crack and tell you if it needs structural repair.