What do Stair-step Cracks in my Home’s Exterior Brick Mean?

Stair-step cracks in your home’s exterior brick follow the mortar joints in a zigzag, stepped pattern and are a primary indicator of foundation settlement. These fractures signify that the underlying foundation is settling or moving unevenly, often due to Colorado’s expansive clay soils that shrink and swell with moisture changes.

While some minor fissures can be cosmetic, you should be concerned if the cracks exhibit the following characteristics:

Width: Cracks wider than 1/8 inch or 1/4 inch are considered high-risk and indicate significant movement.
Secondary Signs: The presence of sticking doors, binding windows, or uneven floors alongside the cracks typically confirms structural issues.
Location: Cracks appearing near corners, windows, or door frames often point to active settlement.

Depending on the severity, professional repair methods may include:

Helical Piers: Steel shafts driven into stable soil to transfer the weight of the foundation and lift sinking sections.
Tieback Systems: Anchors used to counteract lateral pressure, often used if horizontal foundation cracks are also present.
Epoxy Injection: Used to seal non-structural cracks to prevent water and pest intrusion, though this does not fix the underlying soil movement.

Stair-Step Cracks in Brick: Signs of Foundation Problems

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