ASK JIM

Is This Crack Serious?

"This is probably the most common question homeowners ask me."

Jim
Owner, King Piers
40+ Years of Foundation Repair Experience

Real answers from Jim, owner of King Piers, helping Kansas City homeowners understand foundation cracks, settlement, basement water issues, and structural concerns.

Serving Kansas City homeowners with foundation repair, basement waterproofing, crawl space repair, and structural solutions.

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Jim from King Piers answering foundation repair questions for Kansas City homeowners
Quick Answer

Not All Cracks Are Serious.

Some cracks are cosmetic and occur naturally as concrete cures and ages. Others may indicate foundation settlement, soil movement, hydrostatic pressure, or structural stress.

The location, direction, width, and whether the crack is changing over time are some of the most important factors when determining whether a crack should be monitored or professionally evaluated.

What Type of Crack Are You Seeing?

Identifying the type of crack is the first step in understanding what it could mean and whether it needs professional attention.

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Hairline Crack

Small, thin cracks often caused by normal concrete curing and shrinkage. Typically cosmetic unless the crack is widening.

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Stair-Step Crack

Often found in brick or block mortar joints and may indicate foundation movement or settlement. Should be monitored for changes.

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Horizontal Crack

Can suggest pressure against a basement wall from soil or water. Horizontal cracks should generally be evaluated by a professional.

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Vertical Crack

Can range from cosmetic to structural depending on movement, location, water intrusion, and whether the crack is getting wider.

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What Jim Looks For

A Crack Is Only One Clue.

During an inspection, Jim looks at the whole picture — not just the crack itself. The surrounding signs often help determine whether the issue is cosmetic, moisture-related, settlement-related, or potentially structural.

Crack direction and pattern
Crack width and depth
Whether the crack is changing
Water entering through or near the crack
Wall movement or bowing
Doors or windows sticking nearby
Sloping floors or interior movement
Exterior grading and drainage conditions
When To Be Concerned

Monitor It or Have It Evaluated?

Not every crack requires immediate action. However, certain signs may indicate movement, pressure, moisture intrusion, or structural concerns that deserve a closer look.

Monitor It
  • Small hairline crack
  • No visible movement
  • No water intrusion
  • Single isolated crack
  • No sticking doors or windows
  • Crack has not changed over time
Have It Evaluated
  • Horizontal basement wall crack
  • Stair-step brick cracking
  • Crack is widening
  • Water entering through the crack
  • Doors or windows beginning to stick
  • Multiple cracks appearing together
  • Visible wall movement or bowing

Not seeing your specific question? Explore All Ask Jim Foundation Questions →

Still Not Sure?

Have the Crack Looked At Before It Gets Worse

Many foundation cracks are manageable when caught early. If you are unsure whether a crack is cosmetic or a sign of movement, the King Piers team can inspect the issue and explain your options.

Schedule a Free Inspection