The answer to 'what causes sewer repair' is that there are several common issues that can lead to the need for sewer repair, including tree root intrusion, pipe clogging or blockages, pipe corrosion, and ground shifts or settling. Over time, sewer pipes can become damaged or compromised, leading to leaks, backups, and other problems that require professional attention.
Sewer pipes are typically made of cast iron, clay, or PVC, and they are buried underground to carry wastewater away from the home. However, these pipes can be vulnerable to damage from tree roots, which can grow into and through the pipes, causing cracks and blockages. Pipe corrosion, especially in older homes, can also lead to leaks and breakages. Additionally, ground shifts or soil settling can put stress on the pipes and cause them to crack or break.