When your foundation begins to shift, crack, or settle unevenly, the stability of your entire structure is at risk. At Connor & Sons Concrete Inc., we provide reliable foundation repair services throughout Napa, CA, designed to restore structural integrity and prevent further damage. From soil movement to moisture issues, our team identifies the root cause and delivers long-lasting, engineered repair solutions tailored to local conditions and your specific property.
Cracks in concrete walls, slabs, or stem walls often signal early — or advanced — foundation movement. Whether caused by soil shifting, water pressure, or natural aging, cracks never improve on their own.
Our crack repair services include:
Epoxy injection for structural bonding
Polyurethane injection for flexible, water-blocking crack repair
Carbon fiber reinforcement for added wall strength
Stem-wall patching and reinforcement
These repairs restore stability, prevent water intrusion, and help stop cracks from spreading or compromising the building’s load-bearing capacity.
Uneven floors, sinking slabs, or gaps between walls and ceilings are common signs of foundation settling. Our team uses advanced leveling techniques to restore sunken areas and bring your slab back to its correct elevation.
Professional slab leveling services include:
Poly-jacking or grout injection to lift sunken areas
Void filling beneath weakened sections
Slab realignment to correct floor unevenness
Subgrade stabilization to prevent future sinking
This minimally invasive approach restores safety and helps prevent further structural damage without costly full replacement.
Crawl space foundations can suffer from moisture, wood deterioration, inadequate support, and soil movement beneath piers. Left unaddressed, these issues can cause sagging floors, foul odors, and structural imbalance.
Our pier & beam repair services include:
Replacing or reinforcing damaged piers
Beam and joist stabilizing or replacement
Installing vapor barriers for moisture protection
Improving drainage and ventilation beneath the home
With proper support and moisture control, we restore stability and protect the longevity of the structure above.
When a foundation experiences significant settlement or soil instability, underpinning provides the deep support necessary to re-stabilize the structure. This is a long-term, engineered solution that anchors your building to stronger, more stable soil layers.
We offer several engineered underpinning methods:
Helical pier installation for deep anchoring
Concrete pier systems for heavy structural loads
Carbon fiber or steel bracing for wall reinforcement
Advanced drainage and soil stabilization solutions
These reinforcement systems provide permanent stability and prevent future structural movement.

Every repair project is approached with precision and a focus on long-term stability.
Comprehensive Inspection: We assess cracks, moisture, soil conditions, settling patterns, and structural concerns.
Diagnosis & Repair Plan: Your repair strategy is tailored to the actual cause—not just the symptoms.
Site Preparation: We prepare the work area safely and ensure minimal disruption to your property.
Repair Execution: Whether injecting cracks, lifting slabs, or installing piers, we use the best materials and techniques available.
Drainage & Prevention: If water is part of the problem, we correct grading and add solutions like French drains or moisture barriers.
Final Inspection & Review: We verify that the foundation is secure and walk you through the completed work.