A solid substrate and well compacted soils are fundamental to providing a solid foundation upon which concrete structures perform. Over time, Mother Nature takes its toll, especially here in Denver and across the Front Range.Ground water, erosion and soil decomposition are the primary source of failure for roads, bridges, sidewalks, driveways, walkways, and other concrete platforms.Liftech uses an advanced process of injecting a light weight, high compressive strength polyurethane which reacts to form a solid structure in and around voids and areas of wet or loosely compacted soils to strengthen and re-stabilize the substrate and provide a solid, water-tight environment.