crack in concrete floor

What Causes Foundation Cracks?

Foundation cracks are a common problem that can affect the integrity and value of a building. These cracks can range in size and severity, and they can be caused by a variety of factors. 

In this article, we will explore the most common causes of foundation cracks and discuss what you can do to prevent and also repair them.

Common Causes of Foundation Cracks

  • Shifting Soil

One of the primary causes of foundation cracks is shifting soil. When the soil around a foundation moves, it can put pressure on the foundation and cause it to crack. This can be caused by soil expansion and contraction due to changes in moisture levels, soil erosion, and poor drainage.

  • Poor Construction Techniques

Poor construction techniques can also lead to foundation cracks. If the foundation was not properly designed or constructed, it might be more prone to cracking. This can include using the wrong type of foundation for the soil or climate, not properly compacting the soil before pouring the foundation, or using inadequate reinforcement materials.

  • Water Damage

Water damage is another common cause of foundation cracks. When water infiltrates the foundation, it can cause the soil to expand and put pressure on the foundation, leading to cracks. Water damage can be caused by faulty gutters, leaks in plumbing pipes, and poor drainage around the foundation.

  • Tree Roots

Tree roots can also cause foundation cracks. As trees grow, their roots can push against the foundation and cause it to crack. This is especially common in areas with shallow foundations or where the tree is planted too close to the foundation.

  • Frost Heaves

Frost heaves are another factor that can cause foundation cracks. When the water in the soil freezes, it expands and pushes against the foundation, causing it to crack. This is more common in cold climates where the ground freezes frequently.

How to prevent foundation Cracks

  • Proper Foundation Design and Construction

So, what can you do to prevent or repair foundation cracks? The best way to prevent foundation cracks is to ensure that the foundation is properly designed and constructed. This includes using the proper foundation for the soil and climate, properly compacting the soil before pouring the foundation, and using adequate reinforcement materials.

  • Regular Maintenance and Inspection

Regular maintenance and inspection are also key to preventing foundation cracks. This includes keeping an eye out for any signs of water damage, such as leaks or standing water, and addressing them promptly. It’s also a good idea to have your foundation inspected regularly by a professional to identify any potential problems before they become serious.

  • Waterproofing measures

Finally, waterproofing measures can help prevent foundation cracks caused by water damage. This can include installing a good drainage system around the foundation, sealing any cracks or gaps in the foundation, and installing gutters to direct water away from the foundation.


In conclusion, foundation cracks can be caused by a variety of factors, including shifting soil, poor construction techniques, water damage, tree roots, and frost heaves. This is why waterproofing and concrete crack repair experts like B-Dry are in high demand. 

The B-Dry Boston team specializes in concrete crack repairs. Combined with advanced technology, our team provides cost-effective solutions to your problems. Give us a call today or fill out our online contact form!

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