Concrete Sidewalk Stabilization and Joint Sealing Project in Waterloo, IA
Challenge
A rental property owner in Waterloo was experiencing significant deterioration of the concrete sidewalks surrounding their property. Multiple sidewalk sections had settled unevenly, creating trip hazards that posed safety concerns for tenants and visitors. The settlement had also negatively impacted the property's curb appeal, an important consideration for maintaining a professional appearance and attracting quality tenants.
During a detailed site inspection, it was determined that the primary cause of the problem was loss of support beneath the concrete slabs. Soil movement and void formation had allowed sections of the sidewalk to sink, resulting in uneven elevations between adjacent slabs. In addition, open joints and cracks throughout the sidewalk system were allowing water to penetrate beneath the concrete. Left unaddressed, continued water infiltration and Iowa’s seasonal freeze-thaw cycles could accelerate erosion beneath the slabs, increase settlement, and contribute to further concrete deterioration over time.
Solution
To restore the sidewalks without the expense and disruption of complete replacement, MidAmerica Basement Systems implemented a comprehensive concrete repair solution utilizing PolyLevel® polyurethane foam and NexusPro® joint sealant. Small injection ports were strategically drilled through the affected slabs, allowing PolyLevel® foam to be injected beneath the concrete. As the material expanded, it filled underlying voids, stabilized weak soil conditions, and carefully lifted the settled sections back toward their intended elevation. The lightweight, high-density foam provided immediate structural support while minimizing additional stress on the underlying soils.
Once the slabs were properly aligned and stabilized, NexusPro® sealant was applied to the existing joints and cracks. This flexible, UV-resistant sealant created a durable barrier against water infiltration, helping to protect the repaired sidewalks from future erosion and freeze-thaw damage. By addressing both the underlying causes of settlement and the pathways for moisture intrusion, the repair restored safety, improved appearance, and extended the service life of the existing concrete. The completed project provided the property owner with a cost-effective, long-term solution that enhanced tenant safety and preserved the value of their investment property.
