Respond to Sudden Horizontal Foundation Cracks

Cost Savings

Checklist Tasks

• Photograph the crack from multiple angles with a ruler for documentation.
• Clear all items and debris within three feet of the crack for immediate access.
• Mark both ends of the crack with a marker and date to track changes over time.
• Check for bulging or inward bowing with a straightedge to assess collapse risk.
• Tap along the crack with a metal tool to detect hollow sounds indicating voids.
• Inspect nearby floors and ceilings for misalignment or sticking doors indicating shifting.
• Shut off water supply lines near the crack to prevent leaks from worsening damage.
• Place a moisture meter along the crack to detect hidden water intrusion.
• Install temporary shoring posts if bowing exceeds 1 inch to prevent wall failure.
• Contact your insurance provider immediately with photos and notes.
• Avoid using heavy appliances or storing weight above the crack to reduce stress.
• Schedule a structural engineer assessment within 24 hours to stabilize the situation.