Are Foundation Cracks Serious?
Some are, some are not. Thin vertical shrinkage cracks in poured concrete are common and often cosmetic. Horizontal cracks, stair-step cracks in block or brick, cracks wider than a quarter inch, and cracks that leak or keep growing are the ones that usually point to structural movement or soil pressure and deserve an inspection.
Short answer
Some are, some are not. Thin vertical shrinkage cracks in poured concrete are common and often cosmetic. Horizontal cracks, stair-step cracks in block or brick, cracks wider than a quarter inch, and cracks that leak or keep growing are the ones that usually point to structural movement or soil pressure and deserve an inspection.
Reading the Pattern
Direction tells you a lot. Vertical and diagonal cracks often come from shrinkage or minor settlement. Horizontal cracks point to lateral soil pressure. Stair-step cracks in block or brick follow mortar joints and usually mean one section is moving relative to another. Width and change over time matter as much as direction.
The Kansas City Context
Expansive clay soil across the Kansas-side metro swells in wet springs and shrinks in dry summers, so foundations here move seasonally. A crack that opens and closes with the seasons is telling you the soil is moving. A crack that only grows is telling you something is actively getting worse.
What to Do About Them
Cosmetic cracks can be sealed to keep water out. Cracks caused by movement need the cause addressed first: reinforcement, drainage corrections, or stabilization. Sealing a moving crack without fixing the cause just means it reopens.
When to get help
Book an inspection if a crack is horizontal, stair-stepped, wider than a quarter inch, leaking, or visibly growing between seasons. Photos with dates help track change.
Related service: Foundation Crack Repair in Kansas City, KS
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Request contact with an independent provider and ask for photos, measurements, and written recommendations. Confirm inspection fees before booking.
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