The answer to 'types of sewer repair' is that there are several common methods for repairing sewer lines, including pipe relining, pipe bursting, and open-cut excavation. Pipe relining involves inserting a new pipe lining into the existing sewer pipe, which can repair cracks, holes, or other damage without the need for extensive digging. Pipe bursting uses a specialized tool to break apart the old pipe and pull a new pipe through, while open-cut excavation involves digging up and replacing the damaged section of the sewer line.
The best method for sewer repair will depend on the specific issues with the sewer line, the accessibility of the line, and the overall condition of the system. In many cases, it's best to have a professional plumber evaluate the problem and recommend the most appropriate repair approach.