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How Big is Too Big for a Foundation Crack?

While small hairline cracks are often non-structural, determining if a foundation crack is “too big” depends on its characteristics and the underlying cause. In the Denver Front Range, our expansive clay soils can swell up to 10% in volume, leading to significant structural movement.

We recommend an evaluation at the first sign of trouble, especially if you notice the following warning signs alongside cracking:

  • Sticky doors and windows: Difficulty opening or closing entry points often signals shifting foundations.
  • Uneven floors: Sloping or sagging floors indicate the home is no longer level.
  • Secondary interior cracks: New cracks appearing in drywall or interior walls.

Our Repair Approach

The severity of the crack determines our professional strategy. For non-structural cracks primarily intended to stop water leaks, we may use Crack Chasing & Sealing with high-performance, flexible sealants that withstand Colorado’s freeze-thaw cycles.

For larger, structural cracks that threaten the integrity of the home, we utilize Epoxy Injection to restore the concrete’s original load-bearing strength. In cases of significant soil movement, we install Helical Piers to stabilize the structure by reaching stable soil depths, often averaging 17 feet.

Because site conditions vary widely, accurate diagnosis requires a professional on-site evaluation by our trained, certified installers. Consult a licensed structural engineer or qualified professional for definitive diagnosis and design recommendations.


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