Precision Concrete Lifting & Sub-Grade Stabilization for Backyard Patio in Elora, ON
Challenge
In Elora, ON, a homeowner contacted Canadian Concrete Leveling about a large stamped concrete patio that had become a safety hazard. The patio consisted of massive slabs separated by deep relief joints. Over time, the sub-grade beneath these joints failed to adequately support the weight of the concrete, causing the slabs to settle inward toward the cuts.
This resulted in pronounced vertical offsets and deep “valleys” across the patio, creating dangerous trip hazards for the family. Additionally, the uneven surface caused rainwater to accumulate at the joints rather than drain away from the home’s foundation, posing long-term risks of water damage. Addressing the problem required more than cosmetic leveling—it needed precise sub-grade stabilization to ensure the slabs remained secure and properly pitched for drainage.
Solution
Canadian Concrete Leveling employed a precision polymer injection strategy to stabilize the sub-grade and lift the sunken slabs. High-density, slow-reacting polyurethane was injected beneath the relief joints, flowing into hidden voids and consolidating loose soil. The controlled expansion of the material allowed the slabs to be lifted gradually and evenly, creating a uniform surface flush with surrounding sections.
This approach not only eliminated all trip hazards but also restored the patio’s original pitch, ensuring water now drains correctly away from the home’s foundation. The process was non-invasive, preserving the decorative stamped concrete and avoiding the cost, mess, and disruption of a full tear-out. The project was completed in a matter of hours, allowing the homeowners to immediately resume full use of their outdoor space.
By leveraging controlled polyurethane injection and targeted sub-grade reinforcement, this project demonstrates how precision concrete lifting can resolve complex backyard slab issues safely, efficiently, and with long-lasting results. The patio is now fully stabilized, level, and functional, with enhanced safety and proper drainage.
