Concrete Repair in Davenport, IA
Challenge
A residential property in Davenport, IA, exhibited significant grade-loss and settlement of exterior concrete slabs. This migration was not merely an aesthetic concern; the settling slabs were diverting surface runoff toward the structure’s foundation, increasing the hydrostatic pressure and risking long-term structural instability. The objective was to arrest the settlement, restore the original grade for proper drainage, and seal the system against future hydraulic erosion.
System Design Specialist Ryan Nolen conducted a comprehensive site evaluation to determine the root cause of the failure. The assessment identified poorly compacted sub-grade soil and moisture-induced "washout" as the primary drivers of the subsidence. Ryan engineered a two-stage remediation plan focusing on high-density polyurethane injection for lift and a silicone-based sealant for moisture barrier integration.
Solution
Foreman Ricky Sigala and his production crew executed the stabilization using the following technical workflow:
1. Precision Lift via PolyLevel® Injection
The team utilized the PolyLevel® system, a high-density, waterproof polyurethane foam. Small, minimally invasive ports (5/8") were drilled into the affected slabs. Ricky monitored the injection process as the two-part foam underwent an exothermic reaction, expanding to fill the subsurface voids. This provided a controlled, hydraulic-like lift that restored the slabs to their original elevation with precision. Unlike traditional mudjacking, this solution adds minimal weight to the underlying soil, preventing further "secondary" settlement.
2. Hydrological Protection via NexusPro®
To ensure the longevity of the lift, the team addressed the primary cause of the initial failure: water infiltration. Ricky’s crew cleaned and prepared the joints before applying NexusPro® Joint Sealant. This medical-grade silicone sealant is UV-resistant and remains flexible through Iowa’s extreme freeze-thaw cycles. By creating a watertight seal, the system prevents future soil erosion and protects the integrity of the newly injected PolyLevel® substructure.
Through the collaborative efforts of Nolen’s design and Sigala’s technical execution, the property was successfully stabilized.
- Structural Integrity: The slabs were returned to their designed pitch, effectively shedding water away from the foundation.
- Durability: The use of inorganic materials ensures that the repair will not wash out or decay over time.
- Client Impact: The homeowner regained a safe, level landscape, eliminating trip hazards and protecting their largest investment.
MidAmerica Basement Systems continues to set the industry standard by combining advanced materials science with expert field craftsmanship.
