How Soil Moisture Changes Can Damage Your Foundation

Keep Soil Moist

Large cracks in dry soil

Your foundation depends on the soil beneath it for stability. When that soil expands or contracts due to moisture changes, your home can shift — sometimes dramatically. In this article, we will learn how soil moisture affects foundations.

Understanding how soil behaves throughout the year can help you prevent costly foundation damage.

Why Dry Soil Is a Problem

In hot, dry weather, soil loses moisture and shrinks. This is especially true in areas with clay soil.

When the soil contracts, gaps can form beneath your foundation. During the next rainfall, water fills those cracks and softens the soil, reducing its load-bearing capacity. As a result, portions of your home may settle or sink.

Keeping soil moisture levels consistent during dry periods can help minimize cracking and excessive movement.

Why Too Much Water Is Also a Problem

While dry soil causes shrinkage, overly wet soil expands.

This constant cycle — shrinking during dry periods and expanding during wet periods — places stress on your foundation. Over time, that repeated movement can lead to:

  • Cracks in brick or concrete

  • Bowing basement walls

  • Sticking doors and windows

  • Sloping floors

  • Leaning chimneys

Maintaining proper drainage is just as important as maintaining moisture levels.

The Importance of Proper Drainage

If you water around your home during dry weather, be sure the water drains away from the foundation.

Poor grading, clogged gutters, or standing water can cause uneven moisture levels around your home. One side of the foundation may remain saturated while another becomes dry, increasing the risk of uneven settlement.

Trees and shrubs planted too close to your home can also pull moisture from the soil, contributing to imbalance.

Construction Factors That Contribute to Settlement

Moisture isn’t the only factor in foundation movement. Improperly compacted backfill soil during construction can also lead to settlement. If compaction procedures were not followed correctly, portions of the home may sink several inches — enough to cause significant structural issues.

When Foundation Repair Is Necessary

If you notice warning signs of foundation damage, it’s important to act quickly.

At My Foundation Repairs, we use high-quality foundation repair products from Earth Contact Products (ECP), a leading manufacturer in the industry.

Depending on the cause of the damage, solutions may include:

  • Steel push piers for settlement caused by weak or shifting soils

  • Helical piers for long-term support and stabilization

  • Plate anchors to stabilize cracked or bowed walls

A contractor from our nationwide network of partners can evaluate your foundation and recommend the right solution for your home.

Protect Your Home’s Stability

Understanding how soil moisture affects foundations can help you take preventative steps. But if damage has already occurred, professional repair may be necessary.

Contact My Foundation Repairs today for a free estimate and expert guidance on protecting your home’s foundation.