Greetings. A forum thread about hidden sewer problems in older homes pointed me toward camera diagnostics. Reading https://drainexpress.ca/sewer-....camera-inspection-in explained how technicians use a drain camera to locate cracks, root intrusion, or structural failure and then match the repair method to what they actually see. That sequence — inspect first, then recommend — matched what I was looking for after a couple of incomplete fixes. Practical detail without unnecessary technical overload.
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