Carolina Foundation Pros assesses and repairs foundation cracks across the Triangle. Not every crack requires structural repair — but every crack deserves an expert assessment. In North Carolina’s Piedmont clay, understanding which cracks are cosmetic and which indicate active structural settlement is critical. Call (919) 373-3162 for a free foundation crack assessment.
Types of Foundation Cracks in Triangle Homes
Diagonal Cracks at Door and Window Corners
The most common foundation crack in Triangle homes. Running at 45 degrees from door or window corners in drywall or brick mortar, these indicate differential settlement — one section of the foundation has dropped more than another. Wide cracks or cracks with vertical displacement require structural evaluation rather than cosmetic repair.
Stair-Step Cracks in Brick Veneer
Stair-step cracks following mortar joints in brick veneer indicate differential foundation settlement. The brick above the settled area pulls away from the section that hasn’t moved. These are almost always structural and warrant a foundation inspection.
Horizontal Cracks in Block or Brick Walls
Horizontal cracks indicate lateral soil pressure — the soil outside the wall is pushing inward. This is one of the more serious crack patterns and warrants immediate evaluation rather than deferred repair.
Foundation Crack Repair Methods
Structural Crack Injection
For cracks where underlying movement has stopped, epoxy or polyurethane injection fills the crack and restores concrete continuity. Appropriate for stable cracks; not appropriate for actively settling foundations.
Pier Installation First, Then Crack Repair
For cracks caused by active differential settlement, crack injection alone will re-crack as movement continues. The correct sequence: install piers to stop settlement, lift the foundation back toward original grade, then repair the cosmetic crack damage. This sequence is what we follow — we don’t sell crack injection as a structural fix for active settlement.
Foundation Crack Repair Cost in the Triangle
Crack injection alone: $500–$2,000 depending on crack count and length. If pier installation is required first, add $4,500–$12,000 depending on scope. Free inspection determines whether cracks are active or stable before any repair recommendation.
FAQ — Foundation Crack Repair
Are foundation cracks dangerous in NC homes?
Most foundation cracks in Triangle homes are symptoms of ongoing soil movement rather than immediate structural emergencies. However, active cracks that continue to grow indicate progressive settlement that becomes more expensive to repair the longer it continues. Horizontal cracks in block or brick walls warrant faster attention than diagonal drywall cracks.
Can I repair foundation cracks myself?
DIY crack fillers don’t address the underlying movement and typically re-crack within months. For clearly stable hairline cracks, filling them is reasonable. For any crack with vertical offset, horizontal pattern, or evidence of growth, get a professional assessment before spending money on cosmetic repair.
Free Foundation Crack Assessment — Triangle NC
Call (919) 373-3162 for a free crack assessment in Raleigh, Durham, or anywhere in the Triangle.