Polyurethane foam injection is a process used to fill voids or cracks in various structures, such as foundations, walls, and pavements. This technique involves injecting a liquid polyurethane mixture into the affected area, where it expands and hardens, providing support and stability. It is commonly used in construction and repair projects to prevent further damage and improve structural integrity. The benefits of polyurethane foam injection include its quick curing time and minimal disruption to the surrounding environment. This method is often preferred over traditional repair techniques because it is lightweight, waterproof, and resistant to mold and pests, making it a durable solution for long-term repairs.