Can I repair cracks myself?

Small hairline vertical cracks (under 1/8") can be temporarily sealed with hydraulic cement or polyurethane caulk. Any crack that is diagonal, horizontal, growing, or displaced should be professionally evaluated before any repair — DIY patching masks structural problems.

Will fixing the crack fix my foundation problem?

Crack repair addresses the symptom. If active soil movement or drainage issues are driving the crack, it will return unless the root cause is addressed. Proposals that only address the crack without investigating causation are incomplete.

Foundation Crack Repair — Find Trusted Foundation Repair Professionals

Q: How much does crack repair cost?

Epoxy injection: $400–$1,200 per crack. Polyurethane injection: $300–$800. Carbon fiber strap: $400–$600 each. Wall anchor system: $3,000–$7,000.

What Is Foundation Crack Repair?

Foundation crack repair addresses cracks in concrete, block, and stone foundations — from harmless settlement cracks to structurally significant failures.

Understanding Crack Types

Vertical hairline cracks in poured concrete: common during curing, usually not structural. Horizontal cracks in basement walls: indicate lateral soil pressure — potentially serious. Diagonal or stair-step cracks: indicate differential settlement — most concerning. Never cosmetically patch a crack without professional assessment.

Repair Methods

Epoxy injection: for structural cracks requiring tensile strength restoration — bonds stronger than surrounding concrete. Polyurethane foam: for leaking cracks — flexible and stops water. Carbon fiber straps: for bowing basement walls — anchored to joists and floor. Wall anchors: for severely bowing walls with potential for gradual straightening.

When to Get a Structural Engineer

For cracks that appear structural (horizontal, significant diagonal, face displacement, or actively growing), a structural engineer assessment before repair ensures the right solution. Independent engineer opinions are more objective than contractor-provided assessments.

Monitoring

Mark crack ends with pencil and date — monitor for 90 days before deciding on repair for non-urgent cracks. A stable crack allows careful decision-making; a growing crack requires immediate attention.

What to Look for in a Foundation Repair Provider

State general contractor or structural specialty license
Foundation-specific experience — not a general contractor moonlighting in foundation work
Structural engineer involvement or referral for complex cases
Transferable lifetime warranty on pier systems (standard in the industry)
Multiple approaches quoted — not a company that only sells one solution
References from jobs completed in your city in the last 2 years

Frequently Asked Questions

Are diagonal foundation cracks serious?

Diagonal cracks indicate differential settlement. Severity depends on width (under 1/8" — monitor; over 1/4" — professional evaluation needed), face displacement, and growth rate. Have any widening diagonal crack professionally assessed.

How much does crack repair cost?

Professional Foundation Crack Repair