A concrete slab patio was uneven, and had sunk a few inches. The home owners couldn't enjoy their beautiful backyard as easily knowing that themselves or their guests may trip and fall over the uneven surface. Canadian Concrete Leveling fixed their issue no problem. We injected our Polylevel foam and leveled out the surfaces in under an hour. The process was non intrusive, cost effective, and the product has a 10 year warranty. The customers were ecstatic, and can now enjoy their backyard without worrying that people will fall.