Foundation repair is the process of fixing issues with a building's foundation, which is the base that supports the entire structure. Problems can arise due to soil movement, water damage, or poor construction practices. Signs of foundation issues include cracks in walls, uneven floors, and doors that stick or do not close properly. Repair methods vary depending on the severity of the damage. Common techniques include piering, where steel or concrete piers are installed to stabilize the foundation, and slabjacking, which involves injecting material under the foundation to lift it back into place. Timely repairs are essential to prevent further damage and ensure the safety of the building.