Foundation Crack Repairin Baltimore, MD
Foundation cracks let water in and signal structural stress. We diagnose, seal, and repair cracks in poured concrete foundations using professional injection methods.
Get a Free InspectionNot All Cracks Are Equal
Hairline shrinkage cracks are common in poured concrete foundations and are typically not a structural concern — but they still allow water infiltration. Wider cracks, horizontal cracks, or cracks accompanied by wall displacement are more serious and need to be evaluated for structural significance before sealing.
We assess every crack during a free inspection and recommend the appropriate repair method — polyurethane injection for active water leaks, epoxy injection for structural restoration, or surface patching for minor cosmetic issues.
Our Crack Repair Methods
Polyurethane Foam Injection
Expanding polyurethane foam is injected into active, wet cracks. It expands to fill the void completely and remains flexible to accommodate minor foundation movement.
Epoxy Injection
Two-part epoxy injected into dry, dormant cracks bonds the concrete back together with strength exceeding the original concrete — ideal for structural crack repair.
Carbon Fiber Staples
For cracks showing signs of movement, carbon fiber staples are embedded across the crack to bridge it and prevent further widening.
Surface Patching
Minor surface cracks and spalls are cleaned, prepped, and filled with polymer-modified repair mortar that bonds securely to existing concrete.
Exterior Crack Excavation
For accessible exterior cracks, we excavate, clean, and apply hydraulic cement and waterproof membrane at the source — the most complete repair option.
FAQs
How do I know if my foundation crack is serious?
Horizontal cracks in block walls, stair-step cracks, cracks wider than 1/4 inch, or any crack accompanied by wall movement are serious. Hairline vertical cracks in poured concrete are usually not structural but still need sealing.
Will crack injection stop the water permanently?
Yes — polyurethane injection fills the full depth of the crack and the flexible seal accommodates minor movement without breaking the bond.
How long does crack injection take?
Most crack injections are completed in a few hours. The material cures fully within 24 hours.
Do I need interior waterproofing if I fix the cracks?
Crack repair addresses specific entry points, but if your basement has multiple sources of water intrusion, an interior drainage system may be a better long-term solution. We'll give you an honest recommendation.
Stop Water at the Source
Free crack assessment — we'll tell you exactly what you need.