The short answer
How Dry Soil Affects Foundations
Dry soil, particularly clay, shrinks as moisture leaves. This shrinkage creates gaps beneath and beside your foundation. Without soil support, sections of the foundation can settle unevenly, causing cracks in walls and floors. You might notice stair-step cracks in brick or concrete block, or horizontal cracks in poured concrete.
The problem often becomes worse during extended dry spells or when large trees nearby draw water from the soil. Keep an eye on soil moisture around your home. A simple test: check for gaps between soil and foundation, or look for sinking walkways. These signs suggest soil movement.
Signs That Dry Soil Is the Culprit
Look for cracks that are wider at the top than the bottom, or that appear suddenly after a dry period. Doors and windows may stick, and drywall can crack near corners. These symptoms often point to foundation movement caused by soil shrinkage.
But not all cracks come from dry soil. Hairline cracks from concrete curing are common and usually harmless. Larger cracks, especially those that are active or growing, need attention. A water damage inspection can help you understand the severity and cause.
- Cracks wider than 1/4 inch
- Stair-step cracks in masonry
- Doors or windows that stick
- Gaps between soil and foundation
- Sloping or uneven floors
- Cracks that reappear after repairs
Other Possible Causes of Cracks
Dry soil is one possibility, but not the only one. Poor drainage can saturate soil, causing swelling and pressure against foundation walls. Tree roots can also absorb moisture and create uneven support. Construction issues, like inadequate footings, may lead to cracking as well.
A plumber or foundation professional can help rule out plumbing leaks that might be adding moisture to the soil. Leak detection services can identify hidden leaks. If you suspect a leak, address it quickly to prevent further damage.
What You Can Do Yourself
Water the soil around your foundation during dry periods, but avoid overwatering, which can cause swelling. Use a soaker hose to maintain consistent moisture. Also, improve drainage by extending downspouts away from the foundation and grading soil to slope away.
Keep trees at a distance, or consult an arborist about root management. Regularly inspect your foundation for new or widening cracks. Document changes with photos and notes. This information helps the pros understand the situation when you seek help.
When to Call the Pros
If you notice active cracks, significant settlement, or water intrusion, it's time to involve local water damage pros. They can perform a water damage inspection to assess moisture levels and structural integrity. They may use moisture mapping to identify wet or dry zones in the soil.
For foundation movement, foundation stabilization may be necessary. This process often involves underpinning or soil modification. Structural drying and dehumidification can help if excess moisture is an issue. The right approach depends on the specific cause, so a thorough inspection is the first step.
- Cracks that grow or change
- Water seeping into basement or crawlspace
- Floors that feel bouncy or uneven
- Visible gaps around windows or doors
- Foundation walls that bow inward
Talk to someone now
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (479) 370-1500Frequently asked questions
Can I fix dry soil cracks myself?
Minor hairline cracks can be sealed with masonry caulk, but structural cracks need professional evaluation. If the crack is wider than 1/4 inch or active, call the pros. They can determine if soil moisture or another issue is the cause and recommend proper repair.
Will watering the foundation help?
In dry conditions, watering the soil around the foundation can help maintain moisture and reduce shrinkage. Use a soaker hose and water deeply but infrequently. However, overwatering can cause swelling, so monitor soil moisture and adjust. If you have a basement, check for leaks.
Does insurance cover foundation cracks?
Policies vary, and your insurer decides what is covered. Foundation cracks from soil movement are often excluded from standard homeowners policies. Review your policy and ask your agent about specific coverage. If water damage from a burst pipe caused the crack, that may be covered.