How to recognise it
A joint with an internal step can catch paper and debris, leak into the surrounding ground or admit roots. Clearance may restore flow without removing the defect.
- Blockage recurs at the same distance
- Camera footage shows a step or gap
- Roots or soil enter at a joint
Removal and prevention
Clean and survey the line, then select a patch, liner or excavation according to the displacement and access.
Repair the joint and retain footage or measurements for future reference.
- Match the tool to the pipe and material
- Verify full flow after clearance
- Investigate a fast recurrence
- Change disposal or maintenance habits where relevant
Step-by-step approach
- 1
Locate the affected section
- 2
Compare the signs with other possible causes
- 3
Choose a compatible removal method
- 4
Restore and verify normal flow
- 5
Prevent recurrence or arrange a condition survey
A symptom cannot confirm the pipe condition on its own. Stop DIY work if the route is unknown, tools jam, wastewater backs up or the blockage returns.